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| <innernamespace refid="namespaceiceberg">iceberg</innernamespace> |
| <sectiondef kind="var"> |
| <memberdef kind="variable" id="decimal_8cc_1aa3347beb5b3bdab8b6415e70b2ed2692" prot="public" static="no" mutable="no"> |
| <type>std::string_view</type> |
| <definition>std::string_view whole_digits</definition> |
| <argsstring></argsstring> |
| <name>whole_digits</name> |
| <briefdescription> |
| </briefdescription> |
| <detaileddescription> |
| </detaileddescription> |
| <inbodydescription> |
| </inbodydescription> |
| <location file="iceberg/util/decimal.cc" line="59" column="20" bodyfile="iceberg/util/decimal.cc" bodystart="59" bodyend="-1"/> |
| </memberdef> |
| <memberdef kind="variable" id="decimal_8cc_1a12b3baee2f17277e5e7f8aca0ea204c3" prot="public" static="no" mutable="no"> |
| <type>std::string_view</type> |
| <definition>std::string_view fractional_digits</definition> |
| <argsstring></argsstring> |
| <name>fractional_digits</name> |
| <briefdescription> |
| </briefdescription> |
| <detaileddescription> |
| </detaileddescription> |
| <inbodydescription> |
| </inbodydescription> |
| <location file="iceberg/util/decimal.cc" line="60" column="20" bodyfile="iceberg/util/decimal.cc" bodystart="60" bodyend="-1"/> |
| </memberdef> |
| <memberdef kind="variable" id="decimal_8cc_1a788b2ba524ecb0d4793700c0bbaebf07" prot="public" static="no" mutable="no"> |
| <type>int32_t</type> |
| <definition>int32_t exponent</definition> |
| <argsstring></argsstring> |
| <name>exponent</name> |
| <initializer>{0}</initializer> |
| <briefdescription> |
| </briefdescription> |
| <detaileddescription> |
| </detaileddescription> |
| <inbodydescription> |
| </inbodydescription> |
| <location file="iceberg/util/decimal.cc" line="61" column="11" bodyfile="iceberg/util/decimal.cc" bodystart="61" bodyend="61"/> |
| </memberdef> |
| <memberdef kind="variable" id="decimal_8cc_1af58136c20626613559589ae2ac0aace8" prot="public" static="no" mutable="no"> |
| <type>char</type> |
| <definition>char sign</definition> |
| <argsstring></argsstring> |
| <name>sign</name> |
| <initializer>{0}</initializer> |
| <briefdescription> |
| </briefdescription> |
| <detaileddescription> |
| </detaileddescription> |
| <inbodydescription> |
| </inbodydescription> |
| <location file="iceberg/util/decimal.cc" line="62" column="8" bodyfile="iceberg/util/decimal.cc" bodystart="62" bodyend="62"/> |
| </memberdef> |
| <memberdef kind="variable" id="decimal_8cc_1ae44aeef2229f1d97f6ed67f726a287af" prot="public" static="no" mutable="no"> |
| <type>bool</type> |
| <definition>bool has_exponent</definition> |
| <argsstring></argsstring> |
| <name>has_exponent</name> |
| <initializer>{false}</initializer> |
| <briefdescription> |
| </briefdescription> |
| <detaileddescription> |
| </detaileddescription> |
| <inbodydescription> |
| </inbodydescription> |
| <location file="iceberg/util/decimal.cc" line="63" column="8" bodyfile="iceberg/util/decimal.cc" bodystart="63" bodyend="63"/> |
| </memberdef> |
| </sectiondef> |
| <briefdescription> |
| <para>128-bit fixed-point decimal numbers. Adapted from Apache Arrow with only Decimal128 support. <ulink url="https://github.com/apache/arrow/blob/main/cpp/src/arrow/util/decimal.cc">https://github.com/apache/arrow/blob/main/cpp/src/arrow/util/decimal.cc</ulink> </para> |
| </briefdescription> |
| <detaileddescription> |
| </detaileddescription> |
| <programlisting> |
| <codeline lineno="1"><highlight class="comment">/*</highlight></codeline> |
| <codeline lineno="2"><highlight class="comment"><sp/>*<sp/>Licensed<sp/>to<sp/>the<sp/>Apache<sp/>Software<sp/>Foundation<sp/>(ASF)<sp/>under<sp/>one</highlight></codeline> |
| <codeline lineno="3"><highlight class="comment"><sp/>*<sp/>or<sp/>more<sp/>contributor<sp/>license<sp/>agreements.<sp/><sp/>See<sp/>the<sp/>NOTICE<sp/>file</highlight></codeline> |
| <codeline lineno="4"><highlight class="comment"><sp/>*<sp/>distributed<sp/>with<sp/>this<sp/>work<sp/>for<sp/>additional<sp/>information</highlight></codeline> |
| <codeline lineno="5"><highlight class="comment"><sp/>*<sp/>regarding<sp/>copyright<sp/>ownership.<sp/><sp/>The<sp/>ASF<sp/>licenses<sp/>this<sp/>file</highlight></codeline> |
| <codeline lineno="6"><highlight class="comment"><sp/>*<sp/>to<sp/>you<sp/>under<sp/>the<sp/>Apache<sp/>License,<sp/>Version<sp/>2.0<sp/>(the</highlight></codeline> |
| <codeline lineno="7"><highlight class="comment"><sp/>*<sp/>"License");<sp/>you<sp/>may<sp/>not<sp/>use<sp/>this<sp/>file<sp/>except<sp/>in<sp/>compliance</highlight></codeline> |
| <codeline lineno="8"><highlight class="comment"><sp/>*<sp/>with<sp/>the<sp/>License.<sp/><sp/>You<sp/>may<sp/>obtain<sp/>a<sp/>copy<sp/>of<sp/>the<sp/>License<sp/>at</highlight></codeline> |
| <codeline lineno="9"><highlight class="comment"><sp/>*</highlight></codeline> |
| <codeline lineno="10"><highlight class="comment"><sp/>*<sp/><sp/><sp/>http://www.apache.org/licenses/LICENSE-2.0</highlight></codeline> |
| <codeline lineno="11"><highlight class="comment"><sp/>*</highlight></codeline> |
| <codeline lineno="12"><highlight class="comment"><sp/>*<sp/>Unless<sp/>required<sp/>by<sp/>applicable<sp/>law<sp/>or<sp/>agreed<sp/>to<sp/>in<sp/>writing,</highlight></codeline> |
| <codeline lineno="13"><highlight class="comment"><sp/>*<sp/>software<sp/>distributed<sp/>under<sp/>the<sp/>License<sp/>is<sp/>distributed<sp/>on<sp/>an</highlight></codeline> |
| <codeline lineno="14"><highlight class="comment"><sp/>*<sp/>"AS<sp/>IS"<sp/>BASIS,<sp/>WITHOUT<sp/>WARRANTIES<sp/>OR<sp/>CONDITIONS<sp/>OF<sp/>ANY</highlight></codeline> |
| <codeline lineno="15"><highlight class="comment"><sp/>*<sp/>KIND,<sp/>either<sp/>express<sp/>or<sp/>implied.<sp/><sp/>See<sp/>the<sp/>License<sp/>for<sp/>the</highlight></codeline> |
| <codeline lineno="16"><highlight class="comment"><sp/>*<sp/>specific<sp/>language<sp/>governing<sp/>permissions<sp/>and<sp/>limitations</highlight></codeline> |
| <codeline lineno="17"><highlight class="comment"><sp/>*<sp/>under<sp/>the<sp/>License.</highlight></codeline> |
| <codeline lineno="18"><highlight class="comment"><sp/>*/</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="19"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="24"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="25"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>"<ref refid="decimal_8h" kindref="compound">iceberg/util/decimal.h</ref>"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="26"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="27"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><algorithm></highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="28"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><bit></highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="29"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><charconv></highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="30"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><climits></highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="31"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><cmath></highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="32"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><cstring></highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="33"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><iomanip></highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="34"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><limits></highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="35"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><sstream></highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="36"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/><utility></highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="37"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="38"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>"<ref refid="exception_8h" kindref="compound">iceberg/exception.h</ref>"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="39"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>"iceberg/result.h"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="40"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>"<ref refid="int128_8h" kindref="compound">iceberg/util/int128.h</ref>"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="41"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>"iceberg/util/macros.h"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="42"><highlight class="normal"></highlight><highlight class="preprocessor">#include<sp/>"iceberg/util/string_util.h"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="43"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="44"><highlight class="normal"></highlight><highlight class="keyword">namespace<sp/></highlight><highlight class="normal">iceberg<sp/>{</highlight></codeline> |
| <codeline lineno="45"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="46"><highlight class="normal"></highlight><highlight class="keyword">namespace<sp/></highlight><highlight class="normal">{</highlight></codeline> |
| <codeline lineno="47"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="48"><highlight class="normal"></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>int32_t<sp/>kMinDecimalBytes<sp/>=<sp/>1;</highlight></codeline> |
| <codeline lineno="49"><highlight class="normal"></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>int32_t<sp/>kMaxDecimalBytes<sp/>=<sp/>16;</highlight></codeline> |
| <codeline lineno="50"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="51"><highlight class="normal"></highlight><highlight class="comment">//<sp/>The<sp/>maximum<sp/>decimal<sp/>value<sp/>that<sp/>can<sp/>be<sp/>represented<sp/>with<sp/>kMaxPrecision<sp/>digits.</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="52"><highlight class="normal"></highlight><highlight class="comment">//<sp/>10^38<sp/>-<sp/>1</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="53"><highlight class="normal"></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>Decimal<sp/>kMaxDecimalValue(5421010862427522170LL,<sp/>687399551400673279ULL);</highlight></codeline> |
| <codeline lineno="54"><highlight class="normal"></highlight><highlight class="comment">//<sp/>The<sp/>mininum<sp/>decimal<sp/>value<sp/>that<sp/>can<sp/>be<sp/>represented<sp/>with<sp/>kMaxPrecision<sp/>digits.</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="55"><highlight class="normal"></highlight><highlight class="comment">//<sp/>-<sp/>(10^38<sp/>-<sp/>1)</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="56"><highlight class="normal"></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>Decimal<sp/>kMinDecimalValue(-5421010862427522171LL,<sp/>17759344522308878337ULL);</highlight></codeline> |
| <codeline lineno="57"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="58"><highlight class="normal"></highlight><highlight class="keyword">struct<sp/></highlight><highlight class="normal">DecimalComponents<sp/>{</highlight></codeline> |
| <codeline lineno="59"><highlight class="normal"><sp/><sp/>std::string_view<sp/>whole_digits;</highlight></codeline> |
| <codeline lineno="60"><highlight class="normal"><sp/><sp/>std::string_view<sp/>fractional_digits;</highlight></codeline> |
| <codeline lineno="61"><highlight class="normal"><sp/><sp/>int32_t<sp/>exponent{0};</highlight></codeline> |
| <codeline lineno="62"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordtype">char</highlight><highlight class="normal"><sp/>sign{0};</highlight></codeline> |
| <codeline lineno="63"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/>has_exponent{</highlight><highlight class="keyword">false</highlight><highlight class="normal">};</highlight></codeline> |
| <codeline lineno="64"><highlight class="normal">};</highlight></codeline> |
| <codeline lineno="65"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="66"><highlight class="normal"></highlight><highlight class="keyword">inline</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/>IsSign(</highlight><highlight class="keywordtype">char</highlight><highlight class="normal"><sp/>c)<sp/>{<sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>c<sp/>==<sp/></highlight><highlight class="charliteral">'+'</highlight><highlight class="normal"><sp/>||<sp/>c<sp/>==<sp/></highlight><highlight class="charliteral">'-'</highlight><highlight class="normal">;<sp/>}</highlight></codeline> |
| <codeline lineno="67"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="68"><highlight class="normal"></highlight><highlight class="keyword">inline</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/>IsDigit(</highlight><highlight class="keywordtype">char</highlight><highlight class="normal"><sp/>c)<sp/>{<sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>c<sp/>>=<sp/></highlight><highlight class="charliteral">'0'</highlight><highlight class="normal"><sp/>&&<sp/>c<sp/><=<sp/></highlight><highlight class="charliteral">'9'</highlight><highlight class="normal">;<sp/>}</highlight></codeline> |
| <codeline lineno="69"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="70"><highlight class="normal"></highlight><highlight class="keyword">inline</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/>IsDot(</highlight><highlight class="keywordtype">char</highlight><highlight class="normal"><sp/>c)<sp/>{<sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>c<sp/>==<sp/></highlight><highlight class="charliteral">'.'</highlight><highlight class="normal">;<sp/>}</highlight></codeline> |
| <codeline lineno="71"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="72"><highlight class="normal"></highlight><highlight class="keyword">inline</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/>StartsExponent(</highlight><highlight class="keywordtype">char</highlight><highlight class="normal"><sp/>c)<sp/>{<sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>c<sp/>==<sp/></highlight><highlight class="charliteral">'e'</highlight><highlight class="normal"><sp/>||<sp/>c<sp/>==<sp/></highlight><highlight class="charliteral">'E'</highlight><highlight class="normal">;<sp/>}</highlight></codeline> |
| <codeline lineno="73"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="74"><highlight class="normal"></highlight><highlight class="keyword">inline</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">size_t</highlight><highlight class="normal"><sp/>ParseDigitsRun(std::string_view<sp/>str,<sp/></highlight><highlight class="keywordtype">size_t</highlight><highlight class="normal"><sp/>pos,<sp/>std::string_view*<sp/>out)<sp/>{</highlight></codeline> |
| <codeline lineno="75"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordtype">size_t</highlight><highlight class="normal"><sp/>start<sp/>=<sp/>pos;</highlight></codeline> |
| <codeline lineno="76"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">while</highlight><highlight class="normal"><sp/>(pos<sp/><<sp/>str.size()<sp/>&&<sp/>IsDigit(str[pos]))<sp/>{</highlight></codeline> |
| <codeline lineno="77"><highlight class="normal"><sp/><sp/><sp/><sp/>++pos;</highlight></codeline> |
| <codeline lineno="78"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="79"><highlight class="normal"><sp/><sp/>*out<sp/>=<sp/>str.substr(start,<sp/>pos<sp/>-<sp/>start);</highlight></codeline> |
| <codeline lineno="80"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>pos;</highlight></codeline> |
| <codeline lineno="81"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="82"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="83"><highlight class="normal"></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/>ParseDecimalComponents(std::string_view<sp/>str,<sp/>DecimalComponents*<sp/>out)<sp/>{</highlight></codeline> |
| <codeline lineno="84"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordtype">size_t</highlight><highlight class="normal"><sp/>pos<sp/>=<sp/>0;</highlight></codeline> |
| <codeline lineno="85"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="86"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(str.empty())<sp/>{</highlight></codeline> |
| <codeline lineno="87"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">false</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="88"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="89"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="90"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>Sign<sp/>of<sp/>the<sp/>number</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="91"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(IsSign(str[pos]))<sp/>{</highlight></codeline> |
| <codeline lineno="92"><highlight class="normal"><sp/><sp/><sp/><sp/>out->sign<sp/>=<sp/>str[pos++];</highlight></codeline> |
| <codeline lineno="93"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="94"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>First<sp/>run<sp/>of<sp/>digits</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="95"><highlight class="normal"><sp/><sp/>pos<sp/>=<sp/>ParseDigitsRun(str,<sp/>pos,<sp/>&out->whole_digits);</highlight></codeline> |
| <codeline lineno="96"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(pos<sp/>==<sp/>str.size())<sp/>{</highlight></codeline> |
| <codeline lineno="97"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>!out->whole_digits.empty();</highlight></codeline> |
| <codeline lineno="98"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="99"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="100"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>Optional<sp/>dot</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="101"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(IsDot(str[pos]))<sp/>{</highlight></codeline> |
| <codeline lineno="102"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Second<sp/>run<sp/>of<sp/>digits<sp/>after<sp/>the<sp/>dot</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="103"><highlight class="normal"><sp/><sp/><sp/><sp/>pos<sp/>=<sp/>ParseDigitsRun(str,<sp/>++pos,<sp/>&out->fractional_digits);</highlight></codeline> |
| <codeline lineno="104"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="105"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(out->fractional_digits.empty()<sp/>&&<sp/>out->whole_digits.empty())<sp/>{</highlight></codeline> |
| <codeline lineno="106"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Need<sp/>at<sp/>least<sp/>some<sp/>digits<sp/>(whole<sp/>or<sp/>fractional)</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="107"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">false</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="108"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="109"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(pos<sp/>==<sp/>str.size())<sp/>{</highlight></codeline> |
| <codeline lineno="110"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">true</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="111"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="112"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="113"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>Optional<sp/>exponent<sp/>part</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="114"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(StartsExponent(str[pos]))<sp/>{</highlight></codeline> |
| <codeline lineno="115"><highlight class="normal"><sp/><sp/><sp/><sp/>++pos;</highlight></codeline> |
| <codeline lineno="116"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Skip<sp/>'+'<sp/>sign,<sp/>'-'<sp/>sign<sp/>will<sp/>be<sp/>handled<sp/>by<sp/>from_chars</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="117"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(pos<sp/><<sp/>str.size()<sp/>&&<sp/>str[pos]<sp/>==<sp/></highlight><highlight class="charliteral">'+'</highlight><highlight class="normal">)<sp/>{</highlight></codeline> |
| <codeline lineno="118"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/>++pos;</highlight></codeline> |
| <codeline lineno="119"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="120"><highlight class="normal"><sp/><sp/><sp/><sp/>out->has_exponent<sp/>=<sp/></highlight><highlight class="keyword">true</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="121"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>[ptr,<sp/>ec]<sp/>=</highlight></codeline> |
| <codeline lineno="122"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>std::from_chars(str.data()<sp/>+<sp/>pos,<sp/>str.data()<sp/>+<sp/>str.size(),<sp/>out->exponent);</highlight></codeline> |
| <codeline lineno="123"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(ec<sp/>!=<sp/>std::errc())<sp/>{</highlight></codeline> |
| <codeline lineno="124"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">false</highlight><highlight class="normal">;<sp/><sp/></highlight><highlight class="comment">//<sp/>Failed<sp/>to<sp/>parse<sp/>exponent</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="125"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="126"><highlight class="normal"><sp/><sp/><sp/><sp/>pos<sp/>=<sp/>ptr<sp/>-<sp/>str.data();</highlight></codeline> |
| <codeline lineno="127"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="128"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="129"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>pos<sp/>==<sp/>str.size();</highlight></codeline> |
| <codeline lineno="130"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="131"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="132"><highlight class="normal"></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>kInt64DecimalDigits<sp/>=</highlight></codeline> |
| <codeline lineno="133"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="keywordtype">size_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(std::numeric_limits<int64_t>::digits10);</highlight></codeline> |
| <codeline lineno="134"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="135"><highlight class="normal"></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>std::array<uint64_t,<sp/>kInt64DecimalDigits<sp/>+<sp/>1><sp/>kUInt64PowersOfTen<sp/>=<sp/>{</highlight></codeline> |
| <codeline lineno="136"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>clang-format<sp/>off</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="137"><highlight class="normal"><sp/><sp/><sp/><sp/>1ULL,</highlight></codeline> |
| <codeline lineno="138"><highlight class="normal"><sp/><sp/><sp/><sp/>10ULL,</highlight></codeline> |
| <codeline lineno="139"><highlight class="normal"><sp/><sp/><sp/><sp/>100ULL,</highlight></codeline> |
| <codeline lineno="140"><highlight class="normal"><sp/><sp/><sp/><sp/>1000ULL,</highlight></codeline> |
| <codeline lineno="141"><highlight class="normal"><sp/><sp/><sp/><sp/>10000ULL,</highlight></codeline> |
| <codeline lineno="142"><highlight class="normal"><sp/><sp/><sp/><sp/>100000ULL,</highlight></codeline> |
| <codeline lineno="143"><highlight class="normal"><sp/><sp/><sp/><sp/>1000000ULL,</highlight></codeline> |
| <codeline lineno="144"><highlight class="normal"><sp/><sp/><sp/><sp/>10000000ULL,</highlight></codeline> |
| <codeline lineno="145"><highlight class="normal"><sp/><sp/><sp/><sp/>100000000ULL,</highlight></codeline> |
| <codeline lineno="146"><highlight class="normal"><sp/><sp/><sp/><sp/>1000000000ULL,</highlight></codeline> |
| <codeline lineno="147"><highlight class="normal"><sp/><sp/><sp/><sp/>10000000000ULL,</highlight></codeline> |
| <codeline lineno="148"><highlight class="normal"><sp/><sp/><sp/><sp/>100000000000ULL,</highlight></codeline> |
| <codeline lineno="149"><highlight class="normal"><sp/><sp/><sp/><sp/>1000000000000ULL,</highlight></codeline> |
| <codeline lineno="150"><highlight class="normal"><sp/><sp/><sp/><sp/>10000000000000ULL,</highlight></codeline> |
| <codeline lineno="151"><highlight class="normal"><sp/><sp/><sp/><sp/>100000000000000ULL,</highlight></codeline> |
| <codeline lineno="152"><highlight class="normal"><sp/><sp/><sp/><sp/>1000000000000000ULL,</highlight></codeline> |
| <codeline lineno="153"><highlight class="normal"><sp/><sp/><sp/><sp/>10000000000000000ULL,</highlight></codeline> |
| <codeline lineno="154"><highlight class="normal"><sp/><sp/><sp/><sp/>100000000000000000ULL,</highlight></codeline> |
| <codeline lineno="155"><highlight class="normal"><sp/><sp/><sp/><sp/>1000000000000000000ULL</highlight></codeline> |
| <codeline lineno="156"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>clang-format<sp/>on</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="157"><highlight class="normal">};</highlight></codeline> |
| <codeline lineno="158"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="160"><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>std::array<Decimal,<sp/>Decimal::kMaxScale<sp/>+<sp/>1><sp/>kDecimal128PowersOfTen<sp/>=<sp/>{</highlight></codeline> |
| <codeline lineno="161"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(1LL),</highlight></codeline> |
| <codeline lineno="162"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(10LL),</highlight></codeline> |
| <codeline lineno="163"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(100LL),</highlight></codeline> |
| <codeline lineno="164"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(1000LL),</highlight></codeline> |
| <codeline lineno="165"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(10000LL),</highlight></codeline> |
| <codeline lineno="166"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(100000LL),</highlight></codeline> |
| <codeline lineno="167"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(1000000LL),</highlight></codeline> |
| <codeline lineno="168"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(10000000LL),</highlight></codeline> |
| <codeline lineno="169"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(100000000LL),</highlight></codeline> |
| <codeline lineno="170"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(1000000000LL),</highlight></codeline> |
| <codeline lineno="171"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(10000000000LL),</highlight></codeline> |
| <codeline lineno="172"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(100000000000LL),</highlight></codeline> |
| <codeline lineno="173"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(1000000000000LL),</highlight></codeline> |
| <codeline lineno="174"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(10000000000000LL),</highlight></codeline> |
| <codeline lineno="175"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(100000000000000LL),</highlight></codeline> |
| <codeline lineno="176"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(1000000000000000LL),</highlight></codeline> |
| <codeline lineno="177"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(10000000000000000LL),</highlight></codeline> |
| <codeline lineno="178"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(100000000000000000LL),</highlight></codeline> |
| <codeline lineno="179"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(1000000000000000000LL),</highlight></codeline> |
| <codeline lineno="180"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(0LL,<sp/>10000000000000000000ULL),</highlight></codeline> |
| <codeline lineno="181"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(5LL,<sp/>7766279631452241920ULL),</highlight></codeline> |
| <codeline lineno="182"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(54LL,<sp/>3875820019684212736ULL),</highlight></codeline> |
| <codeline lineno="183"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(542LL,<sp/>1864712049423024128ULL),</highlight></codeline> |
| <codeline lineno="184"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(5421LL,<sp/>200376420520689664ULL),</highlight></codeline> |
| <codeline lineno="185"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(54210LL,<sp/>2003764205206896640ULL),</highlight></codeline> |
| <codeline lineno="186"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(542101LL,<sp/>1590897978359414784ULL),</highlight></codeline> |
| <codeline lineno="187"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(5421010LL,<sp/>15908979783594147840ULL),</highlight></codeline> |
| <codeline lineno="188"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(54210108LL,<sp/>11515845246265065472ULL),</highlight></codeline> |
| <codeline lineno="189"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(542101086LL,<sp/>4477988020393345024ULL),</highlight></codeline> |
| <codeline lineno="190"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(5421010862LL,<sp/>7886392056514347008ULL),</highlight></codeline> |
| <codeline lineno="191"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(54210108624LL,<sp/>5076944270305263616ULL),</highlight></codeline> |
| <codeline lineno="192"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(542101086242LL,<sp/>13875954555633532928ULL),</highlight></codeline> |
| <codeline lineno="193"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(5421010862427LL,<sp/>9632337040368467968ULL),</highlight></codeline> |
| <codeline lineno="194"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(54210108624275LL,<sp/>4089650035136921600ULL),</highlight></codeline> |
| <codeline lineno="195"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(542101086242752LL,<sp/>4003012203950112768ULL),</highlight></codeline> |
| <codeline lineno="196"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(5421010862427522LL,<sp/>3136633892082024448ULL),</highlight></codeline> |
| <codeline lineno="197"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(54210108624275221LL,<sp/>12919594847110692864ULL),</highlight></codeline> |
| <codeline lineno="198"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(542101086242752217LL,<sp/>68739955140067328ULL),</highlight></codeline> |
| <codeline lineno="199"><highlight class="normal"><sp/><sp/><sp/><sp/>Decimal(5421010862427522170LL,<sp/>687399551400673280ULL)};</highlight></codeline> |
| <codeline lineno="200"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="201"><highlight class="normal"></highlight><highlight class="keyword">inline</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">void</highlight><highlight class="normal"><sp/>ShiftAndAdd(std::string_view<sp/>input,<sp/>uint128_t&<sp/>out)<sp/>{</highlight></codeline> |
| <codeline lineno="202"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">for</highlight><highlight class="normal"><sp/>(</highlight><highlight class="keywordtype">size_t</highlight><highlight class="normal"><sp/>pos<sp/>=<sp/>0;<sp/>pos<sp/><<sp/>input.size();)<sp/>{</highlight></codeline> |
| <codeline lineno="203"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">size_t</highlight><highlight class="normal"><sp/>group_size<sp/>=<sp/>std::min(kInt64DecimalDigits,<sp/>input.size()<sp/>-<sp/>pos);</highlight></codeline> |
| <codeline lineno="204"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>uint64_t<sp/>multiple<sp/>=<sp/>kUInt64PowersOfTen[group_size];</highlight></codeline> |
| <codeline lineno="205"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="206"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>res<sp/>=<sp/>StringUtils::ParseNumber<uint64_t>(input.substr(pos,<sp/>group_size));</highlight></codeline> |
| <codeline lineno="207"><highlight class="normal"><sp/><sp/><sp/><sp/>ICEBERG_DCHECK(res.has_value(),<sp/></highlight><highlight class="stringliteral">"Failed<sp/>to<sp/>parse<sp/>digits<sp/>in<sp/>ShiftAndAdd"</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="208"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="209"><highlight class="normal"><sp/><sp/><sp/><sp/>out<sp/>=<sp/>out<sp/>*<sp/>multiple<sp/>+<sp/>res.value();</highlight></codeline> |
| <codeline lineno="210"><highlight class="normal"><sp/><sp/><sp/><sp/>pos<sp/>+=<sp/>group_size;</highlight></codeline> |
| <codeline lineno="211"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="212"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="213"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="214"><highlight class="normal"></highlight><highlight class="keywordtype">void</highlight><highlight class="normal"><sp/>AdjustIntegerStringWithScale(int32_t<sp/>scale,<sp/>std::string*<sp/>str)<sp/>{</highlight></codeline> |
| <codeline lineno="215"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(scale<sp/>==<sp/>0)<sp/>{</highlight></codeline> |
| <codeline lineno="216"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="217"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="218"><highlight class="normal"><sp/><sp/>ICEBERG_DCHECK(str<sp/>!=<sp/></highlight><highlight class="keyword">nullptr</highlight><highlight class="normal"><sp/>&&<sp/>!str->empty(),<sp/></highlight><highlight class="stringliteral">"str<sp/>must<sp/>not<sp/>be<sp/>null<sp/>or<sp/>empty"</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="219"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/>is_negative<sp/>=<sp/>str->front()<sp/>==<sp/></highlight><highlight class="charliteral">'-'</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="220"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>is_negative_offset<sp/>=<sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">int32_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(is_negative);</highlight></codeline> |
| <codeline lineno="221"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>len<sp/>=<sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">int32_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(str->size());</highlight></codeline> |
| <codeline lineno="222"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>int32_t<sp/>num_digits<sp/>=<sp/>len<sp/>-<sp/>is_negative_offset;</highlight></codeline> |
| <codeline lineno="223"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>int32_t<sp/>adjusted_exponent<sp/>=<sp/>num_digits<sp/>-<sp/>1<sp/>-<sp/>scale;</highlight></codeline> |
| <codeline lineno="224"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="225"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>Note<sp/>that<sp/>the<sp/>-6<sp/>is<sp/>taken<sp/>from<sp/>the<sp/>Java<sp/>BigDecimal<sp/>documentation.</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="226"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(scale<sp/><<sp/>0<sp/>||<sp/>adjusted_exponent<sp/><<sp/>-6)<sp/>{</highlight></codeline> |
| <codeline lineno="227"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Example<sp/>1:</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="228"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Precondition:<sp/>*str<sp/>=<sp/>"123",<sp/>is_negative_offset<sp/>=<sp/>0,<sp/>num_digits<sp/>=<sp/>3,<sp/>scale<sp/>=<sp/>-2,</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="229"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>adjusted_exponent<sp/>=<sp/>4</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="230"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>After<sp/>inserting<sp/>decimal<sp/>point:<sp/>*str<sp/>=<sp/>"1.23"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="231"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>After<sp/>appending<sp/>exponent:<sp/>*str<sp/>=<sp/>"1.23E+4"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="232"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Example<sp/>2:</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="233"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Precondition:<sp/>*str<sp/>=<sp/>"-123",<sp/>is_negative_offset<sp/>=<sp/>1,<sp/>num_digits<sp/>=<sp/>3,<sp/>scale<sp/>=<sp/>9,</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="234"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>adjusted_exponent<sp/>=<sp/>-7</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="235"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>After<sp/>inserting<sp/>decimal<sp/>point:<sp/>*str<sp/>=<sp/>"-1.23"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="236"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>After<sp/>appending<sp/>exponent:<sp/>*str<sp/>=<sp/>"-1.23E-7"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="237"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Example<sp/>3:</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="238"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Precondition:<sp/>*str<sp/>=<sp/>"0",<sp/>is_negative_offset<sp/>=<sp/>0,<sp/>num_digits<sp/>=<sp/>1,<sp/>scale<sp/>=<sp/>-1,</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="239"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>adjusted_exponent<sp/>=<sp/>1</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="240"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>After<sp/>inserting<sp/>decimal<sp/>point:<sp/>*str<sp/>=<sp/>"0"<sp/>//<sp/>Not<sp/>inserted</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="241"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>After<sp/>appending<sp/>exponent:<sp/>*str<sp/>=<sp/>"0E+1"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="242"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(num_digits<sp/>><sp/>1)<sp/>{</highlight></codeline> |
| <codeline lineno="243"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/>str->insert(str->begin()<sp/>+<sp/>1<sp/>+<sp/>is_negative_offset,<sp/></highlight><highlight class="charliteral">'.'</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="244"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="245"><highlight class="normal"><sp/><sp/><sp/><sp/>str->push_back(</highlight><highlight class="charliteral">'E'</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="246"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(adjusted_exponent<sp/>>=<sp/>0)<sp/>{</highlight></codeline> |
| <codeline lineno="247"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/>str->push_back(</highlight><highlight class="charliteral">'+'</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="248"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="249"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Append<sp/>the<sp/>adjusted<sp/>exponent<sp/>as<sp/>a<sp/>string.</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="250"><highlight class="normal"><sp/><sp/><sp/><sp/>str->append(std::to_string(adjusted_exponent));</highlight></codeline> |
| <codeline lineno="251"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="252"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="253"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="254"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(num_digits<sp/>><sp/>scale)<sp/>{</highlight></codeline> |
| <codeline lineno="255"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>n<sp/>=<sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="keywordtype">size_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(len<sp/>-<sp/>scale);</highlight></codeline> |
| <codeline lineno="256"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Example<sp/>1:</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="257"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Precondition:<sp/>*str<sp/>=<sp/>"123",<sp/>len<sp/>=<sp/>num_digits<sp/>=<sp/>3,<sp/>scale<sp/>=<sp/>1,<sp/>n<sp/>=<sp/>2</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="258"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>After<sp/>inserting<sp/>decimal<sp/>point:<sp/>*str<sp/>=<sp/>"12.3"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="259"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Example<sp/>2:</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="260"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Precondition:<sp/>*str<sp/>=<sp/>"-123",<sp/>len<sp/>=<sp/>4,<sp/>num_digits<sp/>=<sp/>3,<sp/>scale<sp/>=<sp/>1,<sp/>n<sp/>=<sp/>3</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="261"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>After<sp/>inserting<sp/>decimal<sp/>point:<sp/>*str<sp/>=<sp/>"-12.3"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="262"><highlight class="normal"><sp/><sp/><sp/><sp/>str->insert(str->begin()<sp/>+<sp/>n,<sp/></highlight><highlight class="charliteral">'.'</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="263"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="264"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="265"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="266"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>Example<sp/>1:</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="267"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>Precondition:<sp/>*str<sp/>=<sp/>"123",<sp/>is_negative_offset<sp/>=<sp/>0,<sp/>num_digits<sp/>=<sp/>3,<sp/>scale<sp/>=<sp/>4</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="268"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>After<sp/>insert:<sp/>*str<sp/>=<sp/>"000123"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="269"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>After<sp/>setting<sp/>decimal<sp/>point:<sp/>*str<sp/>=<sp/>"0.0123"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="270"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>Example<sp/>2:</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="271"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>Precondition:<sp/>*str<sp/>=<sp/>"-123",<sp/>is_negative_offset<sp/>=<sp/>1,<sp/>num_digits<sp/>=<sp/>3,<sp/>scale<sp/>=<sp/>4</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="272"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>After<sp/>insert:<sp/>*str<sp/>=<sp/>"-000123"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="273"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>After<sp/>setting<sp/>decimal<sp/>point:<sp/>*str<sp/>=<sp/>"-0.0123"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="274"><highlight class="normal"><sp/><sp/>str->insert(is_negative_offset,<sp/>scale<sp/>-<sp/>num_digits<sp/>+<sp/>2,<sp/></highlight><highlight class="charliteral">'0'</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="275"><highlight class="normal"><sp/><sp/>str->at(is_negative_offset<sp/>+<sp/>1)<sp/>=<sp/></highlight><highlight class="charliteral">'.'</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="276"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="277"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="278"><highlight class="normal"></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/>RescaleWouldCauseDataLoss(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>value,<sp/>int32_t<sp/>delta_scale,</highlight></codeline> |
| <codeline lineno="279"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>multiplier,<sp/>Decimal*<sp/>result)<sp/>{</highlight></codeline> |
| <codeline lineno="280"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(delta_scale<sp/><<sp/>0)<sp/>{</highlight></codeline> |
| <codeline lineno="281"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>res<sp/>=<sp/>value.Divide(multiplier);</highlight></codeline> |
| <codeline lineno="282"><highlight class="normal"><sp/><sp/><sp/><sp/>ICEBERG_DCHECK(res,<sp/></highlight><highlight class="stringliteral">"Decimal::Divide<sp/>failed"</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="283"><highlight class="normal"><sp/><sp/><sp/><sp/>*result<sp/>=<sp/>res->first;</highlight></codeline> |
| <codeline lineno="284"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>res->second<sp/>!=<sp/>0;</highlight></codeline> |
| <codeline lineno="285"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="286"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="287"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>max_safe_value<sp/>=<sp/>kMaxDecimalValue<sp/>/<sp/>multiplier;</highlight></codeline> |
| <codeline lineno="288"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>min_safe_value<sp/>=<sp/>kMinDecimalValue<sp/>/<sp/>multiplier;</highlight></codeline> |
| <codeline lineno="289"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(value<sp/>><sp/>max_safe_value<sp/>||<sp/>value<sp/><<sp/>min_safe_value)<sp/>{</highlight></codeline> |
| <codeline lineno="290"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Overflow<sp/>would<sp/>happen<sp/>—<sp/>treat<sp/>as<sp/>data<sp/>loss</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="291"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">true</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="292"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="293"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="294"><highlight class="normal"><sp/><sp/>*result<sp/>=<sp/>value<sp/>*<sp/>multiplier;</highlight></codeline> |
| <codeline lineno="295"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">false</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="296"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="297"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="298"><highlight class="normal">}<sp/><sp/></highlight><highlight class="comment">//<sp/>namespace</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="299"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="300"><highlight class="normal"><ref refid="classiceberg_1_1Decimal_1ae63e1b780e6ac1b118179901a0b2412a" kindref="member">Decimal::Decimal</ref>(std::string_view<sp/>str)<sp/>{</highlight></codeline> |
| <codeline lineno="301"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>result<sp/>=<sp/><ref refid="classiceberg_1_1Decimal_1a4f84f5bdfacbd10dce52d76f73311466" kindref="member">Decimal::FromString</ref>(str);</highlight></codeline> |
| <codeline lineno="302"><highlight class="normal"><sp/><sp/>ICEBERG_CHECK_OR_DIE(result,<sp/></highlight><highlight class="stringliteral">"Failed<sp/>to<sp/>parse<sp/>Decimal<sp/>from<sp/>string:<sp/>{},<sp/>error:<sp/>{}"</highlight><highlight class="normal">,<sp/>str,</highlight></codeline> |
| <codeline lineno="303"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>result.error().message);</highlight></codeline> |
| <codeline lineno="304"><highlight class="normal"><sp/><sp/>*</highlight><highlight class="keyword">this</highlight><highlight class="normal"><sp/>=<sp/>std::move(result.value());</highlight></codeline> |
| <codeline lineno="305"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="306"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="307"><highlight class="normal">Decimal&<sp/><ref refid="classiceberg_1_1Decimal_1a40b38869f003bdc49428f65863509712" kindref="member">Decimal::Negate</ref>()<sp/>{</highlight></codeline> |
| <codeline lineno="308"><highlight class="normal"><sp/><sp/>uint128_t<sp/>u<sp/>=<sp/>~static_cast<uint128_t>(data_)<sp/>+<sp/>1;</highlight></codeline> |
| <codeline lineno="309"><highlight class="normal"><sp/><sp/>data_<sp/>=<sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">int128_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(u);</highlight></codeline> |
| <codeline lineno="310"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>*</highlight><highlight class="keyword">this</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="311"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="312"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="313"><highlight class="normal">Decimal&<sp/><ref refid="classiceberg_1_1Decimal_1aa47f3734360f2253e82192f4c4debb86" kindref="member">Decimal::Abs</ref>()<sp/>{<sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>*</highlight><highlight class="keyword">this</highlight><highlight class="normal"><sp/><<sp/>0<sp/>?<sp/><ref refid="classiceberg_1_1Decimal_1a40b38869f003bdc49428f65863509712" kindref="member">Negate</ref>()<sp/>:<sp/>*this;<sp/>}</highlight></codeline> |
| <codeline lineno="314"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="315"><highlight class="normal">Decimal<sp/><ref refid="classiceberg_1_1Decimal_1aa47f3734360f2253e82192f4c4debb86" kindref="member">Decimal::Abs</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>value)<sp/>{</highlight></codeline> |
| <codeline lineno="316"><highlight class="normal"><sp/><sp/><ref refid="classiceberg_1_1Decimal_1ae63e1b780e6ac1b118179901a0b2412a" kindref="member">Decimal</ref><sp/>result(<ref refid="classiceberg_1_1Decimal_1a875c00e32647b8d39e2a9bb77b3ae5d1" kindref="member">value</ref>);</highlight></codeline> |
| <codeline lineno="317"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>result.Abs();</highlight></codeline> |
| <codeline lineno="318"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="319"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="320"><highlight class="normal">Decimal&<sp/><ref refid="classiceberg_1_1Decimal_1a865d5429b1afb8cfe85b5491dd3125e0" kindref="member">Decimal::operator+=</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>other)<sp/>{</highlight></codeline> |
| <codeline lineno="321"><highlight class="normal"><sp/><sp/>data_<sp/>+=<sp/>other.data_;</highlight></codeline> |
| <codeline lineno="322"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>*</highlight><highlight class="keyword">this</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="323"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="324"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="325"><highlight class="normal">Decimal&<sp/><ref refid="classiceberg_1_1Decimal_1a2f00aca89d7391a8242281b6493c2ec4" kindref="member">Decimal::operator-=</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>other)<sp/>{</highlight></codeline> |
| <codeline lineno="326"><highlight class="normal"><sp/><sp/>data_<sp/>-=<sp/>other.data_;</highlight></codeline> |
| <codeline lineno="327"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>*</highlight><highlight class="keyword">this</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="328"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="329"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="330"><highlight class="normal">Decimal&<sp/><ref refid="classiceberg_1_1Decimal_1a5e16b07aa6ee5cc90c22ea8a0ad17aed" kindref="member">Decimal::operator*=</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>other)<sp/>{</highlight></codeline> |
| <codeline lineno="331"><highlight class="normal"><sp/><sp/>data_<sp/>*=<sp/>other.data_;</highlight></codeline> |
| <codeline lineno="332"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>*</highlight><highlight class="keyword">this</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="333"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="334"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="335"><highlight class="normal">Result<std::pair<Decimal,<sp/>Decimal>><sp/><ref refid="classiceberg_1_1Decimal_1a95e555b097856aee26473044b3337aa2" kindref="member">Decimal::Divide</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>divisor)</highlight><highlight class="keyword"><sp/>const<sp/></highlight><highlight class="normal">{</highlight></codeline> |
| <codeline lineno="336"><highlight class="normal"><sp/><sp/>std::pair<Decimal,<sp/>Decimal><sp/>result;</highlight></codeline> |
| <codeline lineno="337"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(divisor<sp/>==<sp/>0)<sp/>{</highlight></codeline> |
| <codeline lineno="338"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>Invalid(</highlight><highlight class="stringliteral">"Cannot<sp/>divide<sp/>by<sp/>zero<sp/>in<sp/>Decimal::Divide"</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="339"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="340"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>std::make_pair(*</highlight><highlight class="keyword">this</highlight><highlight class="normal"><sp/>/<sp/>divisor,<sp/>*</highlight><highlight class="keyword">this</highlight><highlight class="normal"><sp/>%<sp/>divisor);</highlight></codeline> |
| <codeline lineno="341"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="342"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="343"><highlight class="normal">Decimal&<sp/><ref refid="classiceberg_1_1Decimal_1a2eb5aebd9335517d9f3550d5be10d5ca" kindref="member">Decimal::operator/=</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>other)<sp/>{</highlight></codeline> |
| <codeline lineno="344"><highlight class="normal"><sp/><sp/>data_<sp/>/=<sp/>other.data_;</highlight></codeline> |
| <codeline lineno="345"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>*</highlight><highlight class="keyword">this</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="346"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="347"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="348"><highlight class="normal">Decimal&<sp/><ref refid="classiceberg_1_1Decimal_1ac3308230f8d33e807286c815725315e0" kindref="member">Decimal::operator|=</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>other)<sp/>{</highlight></codeline> |
| <codeline lineno="349"><highlight class="normal"><sp/><sp/>data_<sp/>|=<sp/>other.data_;</highlight></codeline> |
| <codeline lineno="350"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>*</highlight><highlight class="keyword">this</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="351"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="352"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="353"><highlight class="normal">Decimal&<sp/><ref refid="classiceberg_1_1Decimal_1a20c799ed953c57ae6a37a23dcfb17d23" kindref="member">Decimal::operator&=</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>other)<sp/>{</highlight></codeline> |
| <codeline lineno="354"><highlight class="normal"><sp/><sp/>data_<sp/>&=<sp/>other.data_;</highlight></codeline> |
| <codeline lineno="355"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>*</highlight><highlight class="keyword">this</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="356"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="357"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="358"><highlight class="normal">Decimal&<sp/><ref refid="classiceberg_1_1Decimal_1a08ff3aa5dc63e3b0b1a2c84524abfbfd" kindref="member">Decimal::operator<<=</ref>(uint32_t<sp/>bits)<sp/>{</highlight></codeline> |
| <codeline lineno="359"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(bits<sp/>!=<sp/>0)<sp/>{</highlight></codeline> |
| <codeline lineno="360"><highlight class="normal"><sp/><sp/><sp/><sp/>data_<sp/>=<sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">int128_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(</highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">uint128_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(data_)<sp/><<<sp/>bits);</highlight></codeline> |
| <codeline lineno="361"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="362"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="363"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>*</highlight><highlight class="keyword">this</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="364"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="365"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="366"><highlight class="normal">Decimal&<sp/><ref refid="classiceberg_1_1Decimal_1a2c590d941407e08f8d796ea7f51423ce" kindref="member">Decimal::operator>>=</ref>(uint32_t<sp/>bits)<sp/>{</highlight></codeline> |
| <codeline lineno="367"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(bits<sp/>!=<sp/>0)<sp/>{</highlight></codeline> |
| <codeline lineno="368"><highlight class="normal"><sp/><sp/><sp/><sp/>data_<sp/>>>=<sp/>bits;</highlight></codeline> |
| <codeline lineno="369"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="370"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="371"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>*</highlight><highlight class="keyword">this</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="372"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="373"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="374"><highlight class="normal">Result<std::string><sp/><ref refid="classiceberg_1_1Decimal_1ab78520099cf3c8365b5621c159fc2ff5" kindref="member">Decimal::ToString</ref>(int32_t<sp/>scale)</highlight><highlight class="keyword"><sp/>const<sp/></highlight><highlight class="normal">{</highlight></codeline> |
| <codeline lineno="375"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(scale<sp/><<sp/>-kMaxScale<sp/>||<sp/>scale<sp/>><sp/>kMaxScale)<sp/>{</highlight></codeline> |
| <codeline lineno="376"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>InvalidArgument(</highlight></codeline> |
| <codeline lineno="377"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="stringliteral">"Decimal::ToString:<sp/>scale<sp/>must<sp/>be<sp/>in<sp/>the<sp/>range<sp/>[-{},<sp/>{}],<sp/>was<sp/>{}"</highlight><highlight class="normal">,<sp/>kMaxScale,</highlight></codeline> |
| <codeline lineno="378"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>kMaxScale,<sp/>scale);</highlight></codeline> |
| <codeline lineno="379"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="380"><highlight class="normal"><sp/><sp/>std::string<sp/>str(<ref refid="classiceberg_1_1Decimal_1a0bc5d140db7aa661b7eec36eba814030" kindref="member">ToIntegerString</ref>());</highlight></codeline> |
| <codeline lineno="381"><highlight class="normal"><sp/><sp/>AdjustIntegerStringWithScale(scale,<sp/>&str);</highlight></codeline> |
| <codeline lineno="382"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>str;</highlight></codeline> |
| <codeline lineno="383"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="384"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="385"><highlight class="normal">std::string<sp/><ref refid="classiceberg_1_1Decimal_1a0bc5d140db7aa661b7eec36eba814030" kindref="member">Decimal::ToIntegerString</ref>()</highlight><highlight class="keyword"><sp/>const<sp/></highlight><highlight class="normal">{</highlight></codeline> |
| <codeline lineno="386"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(data_<sp/>==<sp/>0)<sp/>{</highlight></codeline> |
| <codeline lineno="387"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/></highlight><highlight class="stringliteral">"0"</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="388"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="389"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="390"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/>negative<sp/>=<sp/>data_<sp/><<sp/>0;</highlight></codeline> |
| <codeline lineno="391"><highlight class="normal"><sp/><sp/>uint128_t<sp/>uval<sp/>=</highlight></codeline> |
| <codeline lineno="392"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/>negative<sp/>?<sp/>-</highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">uint128_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(data_)<sp/>:<sp/>static_cast<uint128_t>(data_);</highlight></codeline> |
| <codeline lineno="393"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="394"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>uint32_t<sp/>k1e9<sp/>=<sp/>1000000000U;</highlight></codeline> |
| <codeline lineno="395"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">size_t</highlight><highlight class="normal"><sp/>kNumBits<sp/>=<sp/>128;</highlight></codeline> |
| <codeline lineno="396"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>Segments<sp/>will<sp/>contain<sp/>the<sp/>array<sp/>split<sp/>into<sp/>groups<sp/>that<sp/>map<sp/>to<sp/>decimal<sp/>digits,<sp/>in</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="397"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>little<sp/>endian<sp/>order.<sp/>Each<sp/>segment<sp/>will<sp/>hold<sp/>at<sp/>most<sp/>9<sp/>decimal<sp/>digits.<sp/>For<sp/>example,<sp/>if</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="398"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>the<sp/>input<sp/>represents<sp/>9876543210123456789,<sp/>then<sp/>segments<sp/>will<sp/>be<sp/>[123456789,</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="399"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>876543210,<sp/>9].</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="400"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>The<sp/>max<sp/>number<sp/>of<sp/>segments<sp/>needed<sp/>=<sp/>ceil(kNumBits<sp/>*<sp/>log(2)<sp/>/<sp/>log(1e9))</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="401"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>=<sp/>ceil(kNumBits<sp/>/<sp/>29.897352854)<sp/><=<sp/>ceil(kNumBits<sp/>/<sp/>29).</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="402"><highlight class="normal"><sp/><sp/>std::array<uint32_t,<sp/>(kNumBits<sp/>+<sp/>28)<sp/>/<sp/>29><sp/>segments;</highlight></codeline> |
| <codeline lineno="403"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordtype">size_t</highlight><highlight class="normal"><sp/>num_segments<sp/>=<sp/>0;</highlight></codeline> |
| <codeline lineno="404"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="405"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">while</highlight><highlight class="normal"><sp/>(uval<sp/>><sp/>0)<sp/>{</highlight></codeline> |
| <codeline lineno="406"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Compute<sp/>remainder<sp/>=<sp/>uval<sp/>%<sp/>1e9<sp/>and<sp/>uval<sp/>=<sp/>uval<sp/>/<sp/>1e9.</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="407"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>remainder<sp/>=<sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">uint32_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(uval<sp/>%<sp/>k1e9);</highlight></codeline> |
| <codeline lineno="408"><highlight class="normal"><sp/><sp/><sp/><sp/>uval<sp/>/=<sp/>k1e9;</highlight></codeline> |
| <codeline lineno="409"><highlight class="normal"><sp/><sp/><sp/><sp/>segments[num_segments++]<sp/>=<sp/>remainder;</highlight></codeline> |
| <codeline lineno="410"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="411"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="412"><highlight class="normal"><sp/><sp/>std::ostringstream<sp/>oss;</highlight></codeline> |
| <codeline lineno="413"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(negative)<sp/>{</highlight></codeline> |
| <codeline lineno="414"><highlight class="normal"><sp/><sp/><sp/><sp/>oss<sp/><<<sp/></highlight><highlight class="charliteral">'-'</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="415"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="416"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="417"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>First<sp/>segment<sp/>is<sp/>formatted<sp/>as-is.</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="418"><highlight class="normal"><sp/><sp/>oss<sp/><<<sp/>segments[num_segments<sp/>-<sp/>1];</highlight></codeline> |
| <codeline lineno="419"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="420"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>Remaining<sp/>segments<sp/>are<sp/>formatted<sp/>with<sp/>leading<sp/>zeros<sp/>to<sp/>fill<sp/>9<sp/>digits.<sp/>e.g.<sp/>123<sp/>is</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="421"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>formatted<sp/>as<sp/>"000000123"</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="422"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">for</highlight><highlight class="normal"><sp/>(</highlight><highlight class="keywordtype">size_t</highlight><highlight class="normal"><sp/>i<sp/>=<sp/>num_segments<sp/>-<sp/>1;<sp/>i--<sp/>><sp/>0;)<sp/>{</highlight></codeline> |
| <codeline lineno="423"><highlight class="normal"><sp/><sp/><sp/><sp/>oss<sp/><<<sp/>std::setw(9)<sp/><<<sp/>std::setfill(</highlight><highlight class="charliteral">'0'</highlight><highlight class="normal">)<sp/><<<sp/>segments[i];</highlight></codeline> |
| <codeline lineno="424"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="425"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="426"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>oss.str();</highlight></codeline> |
| <codeline lineno="427"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="428"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="429"><highlight class="normal">Result<Decimal><sp/><ref refid="classiceberg_1_1Decimal_1a4f84f5bdfacbd10dce52d76f73311466" kindref="member">Decimal::FromString</ref>(std::string_view<sp/>str,<sp/>int32_t*<sp/>precision,</highlight></codeline> |
| <codeline lineno="430"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>int32_t*<sp/>scale)<sp/>{</highlight></codeline> |
| <codeline lineno="431"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(str.empty())<sp/>{</highlight></codeline> |
| <codeline lineno="432"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>InvalidArgument(</highlight><highlight class="stringliteral">"Empty<sp/>string<sp/>is<sp/>not<sp/>a<sp/>valid<sp/>Decimal"</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="433"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="434"><highlight class="normal"><sp/><sp/>DecimalComponents<sp/>dec;</highlight></codeline> |
| <codeline lineno="435"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(!ParseDecimalComponents(str,<sp/>&dec))<sp/>{</highlight></codeline> |
| <codeline lineno="436"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>InvalidArgument(</highlight><highlight class="stringliteral">"Invalid<sp/>decimal<sp/>string<sp/>'{}'"</highlight><highlight class="normal">,<sp/>str);</highlight></codeline> |
| <codeline lineno="437"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="438"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="439"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>Count<sp/>number<sp/>of<sp/>significant<sp/>digits<sp/>(without<sp/>leading<sp/>zeros)</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="440"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordtype">size_t</highlight><highlight class="normal"><sp/>first_non_zero<sp/>=<sp/>dec.whole_digits.find_first_not_of(</highlight><highlight class="charliteral">'0'</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="441"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordtype">size_t</highlight><highlight class="normal"><sp/>significant_digits<sp/>=<sp/>dec.fractional_digits.size();</highlight></codeline> |
| <codeline lineno="442"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(first_non_zero<sp/>!=<sp/>std::string_view::npos)<sp/>{</highlight></codeline> |
| <codeline lineno="443"><highlight class="normal"><sp/><sp/><sp/><sp/>significant_digits<sp/>+=<sp/>dec.whole_digits.size()<sp/>-<sp/>first_non_zero;</highlight></codeline> |
| <codeline lineno="444"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="445"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="446"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>parsed_precision<sp/>=<sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">int32_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(significant_digits);</highlight></codeline> |
| <codeline lineno="447"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="448"><highlight class="normal"><sp/><sp/>int32_t<sp/>parsed_scale<sp/>=<sp/>0;</highlight></codeline> |
| <codeline lineno="449"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(dec.has_exponent)<sp/>{</highlight></codeline> |
| <codeline lineno="450"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>adjusted_exponent<sp/>=<sp/>dec.exponent;</highlight></codeline> |
| <codeline lineno="451"><highlight class="normal"><sp/><sp/><sp/><sp/>parsed_scale<sp/>=<sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">int32_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(dec.fractional_digits.size())<sp/>-<sp/>adjusted_exponent;</highlight></codeline> |
| <codeline lineno="452"><highlight class="normal"><sp/><sp/>}<sp/></highlight><highlight class="keywordflow">else</highlight><highlight class="normal"><sp/>{</highlight></codeline> |
| <codeline lineno="453"><highlight class="normal"><sp/><sp/><sp/><sp/>parsed_scale<sp/>=<sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">int32_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(dec.fractional_digits.size());</highlight></codeline> |
| <codeline lineno="454"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="455"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="456"><highlight class="normal"><sp/><sp/>uint128_t<sp/><ref refid="classiceberg_1_1Decimal_1a875c00e32647b8d39e2a9bb77b3ae5d1" kindref="member">value</ref><sp/>=<sp/>0;</highlight></codeline> |
| <codeline lineno="457"><highlight class="normal"><sp/><sp/>ShiftAndAdd(dec.whole_digits,<sp/><ref refid="classiceberg_1_1Decimal_1a875c00e32647b8d39e2a9bb77b3ae5d1" kindref="member">value</ref>);</highlight></codeline> |
| <codeline lineno="458"><highlight class="normal"><sp/><sp/>ShiftAndAdd(dec.fractional_digits,<sp/><ref refid="classiceberg_1_1Decimal_1a875c00e32647b8d39e2a9bb77b3ae5d1" kindref="member">value</ref>);</highlight></codeline> |
| <codeline lineno="459"><highlight class="normal"><sp/><sp/><ref refid="classiceberg_1_1Decimal_1ae63e1b780e6ac1b118179901a0b2412a" kindref="member">Decimal</ref><sp/>result(</highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">int128_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(<ref refid="classiceberg_1_1Decimal_1a875c00e32647b8d39e2a9bb77b3ae5d1" kindref="member">value</ref>));</highlight></codeline> |
| <codeline lineno="460"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="461"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(dec.sign<sp/>==<sp/></highlight><highlight class="charliteral">'-'</highlight><highlight class="normal">)<sp/>{</highlight></codeline> |
| <codeline lineno="462"><highlight class="normal"><sp/><sp/><sp/><sp/>result.Negate();</highlight></codeline> |
| <codeline lineno="463"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="464"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="465"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(parsed_scale<sp/><<sp/>0)<sp/>{</highlight></codeline> |
| <codeline lineno="466"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>For<sp/>the<sp/>scale<sp/>to<sp/>0,<sp/>to<sp/>avoid<sp/>negative<sp/>scales<sp/>(due<sp/>to<sp/>compatibility<sp/>issues<sp/>with</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="467"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>external<sp/>systems<sp/>such<sp/>as<sp/>databases)</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="468"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(parsed_scale<sp/><<sp/>-kMaxScale)<sp/>{</highlight></codeline> |
| <codeline lineno="469"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>InvalidArgument(</highlight><highlight class="stringliteral">"scale<sp/>must<sp/>be<sp/>in<sp/>the<sp/>range<sp/>[-{},<sp/>{}],<sp/>was<sp/>{}"</highlight><highlight class="normal">,<sp/>kMaxScale,</highlight></codeline> |
| <codeline lineno="470"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>kMaxScale,<sp/>parsed_scale);</highlight></codeline> |
| <codeline lineno="471"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="472"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="473"><highlight class="normal"><sp/><sp/><sp/><sp/>result<sp/>*=<sp/>kDecimal128PowersOfTen[-parsed_scale];</highlight></codeline> |
| <codeline lineno="474"><highlight class="normal"><sp/><sp/><sp/><sp/>parsed_precision<sp/>-=<sp/>parsed_scale;</highlight></codeline> |
| <codeline lineno="475"><highlight class="normal"><sp/><sp/><sp/><sp/>parsed_scale<sp/>=<sp/>0;</highlight></codeline> |
| <codeline lineno="476"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="477"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="478"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(precision<sp/>!=<sp/></highlight><highlight class="keyword">nullptr</highlight><highlight class="normal">)<sp/>{</highlight></codeline> |
| <codeline lineno="479"><highlight class="normal"><sp/><sp/><sp/><sp/>*precision<sp/>=<sp/>parsed_precision;</highlight></codeline> |
| <codeline lineno="480"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="481"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(scale<sp/>!=<sp/></highlight><highlight class="keyword">nullptr</highlight><highlight class="normal">)<sp/>{</highlight></codeline> |
| <codeline lineno="482"><highlight class="normal"><sp/><sp/><sp/><sp/>*scale<sp/>=<sp/>parsed_scale;</highlight></codeline> |
| <codeline lineno="483"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="484"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="485"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>result;</highlight></codeline> |
| <codeline lineno="486"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="487"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="488"><highlight class="normal">Result<Decimal><sp/><ref refid="classiceberg_1_1Decimal_1a80eb853e26b317cf250a676686566911" kindref="member">Decimal::FromBigEndian</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>uint8_t*<sp/>bytes,<sp/>int32_t<sp/>length)<sp/>{</highlight></codeline> |
| <codeline lineno="489"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(length<sp/><<sp/>kMinDecimalBytes<sp/>||<sp/>length<sp/>><sp/>kMaxDecimalBytes)<sp/>{</highlight></codeline> |
| <codeline lineno="490"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>InvalidArgument(</highlight></codeline> |
| <codeline lineno="491"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="stringliteral">"Decimal::FromBigEndian:<sp/>length<sp/>must<sp/>be<sp/>in<sp/>the<sp/>range<sp/>[{},<sp/>{}],<sp/>was<sp/>{}"</highlight><highlight class="normal">,</highlight></codeline> |
| <codeline lineno="492"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>kMinDecimalBytes,<sp/>kMaxDecimalBytes,<sp/>length);</highlight></codeline> |
| <codeline lineno="493"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="494"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="495"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>Bytes<sp/>are<sp/>coming<sp/>in<sp/>big-endian,<sp/>so<sp/>the<sp/>first<sp/>byte<sp/>is<sp/>the<sp/>MSB<sp/>and<sp/>therefore<sp/>holds<sp/>the</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="496"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>sign<sp/>bit.</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="497"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/>is_negative<sp/>=<sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">int8_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(bytes[0])<sp/><<sp/>0;</highlight></codeline> |
| <codeline lineno="498"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="499"><highlight class="normal"><sp/><sp/>uint128_t<sp/>result<sp/>=<sp/>0;</highlight></codeline> |
| <codeline lineno="500"><highlight class="normal"><sp/><sp/>std::memcpy(</highlight><highlight class="keyword">reinterpret_cast<</highlight><highlight class="normal">uint8_t*</highlight><highlight class="keyword">></highlight><highlight class="normal">(&result)<sp/>+<sp/>kMaxDecimalBytes<sp/>-<sp/>length,<sp/>bytes,</highlight></codeline> |
| <codeline lineno="501"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>length);</highlight></codeline> |
| <codeline lineno="502"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="503"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>(std::endian::native<sp/>==<sp/>std::endian::little)<sp/>{</highlight></codeline> |
| <codeline lineno="504"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/><ref refid="classiceberg_1_1Decimal_1ab025a97f157ee7ea1a2135ad34dbb2d2" kindref="member">high</ref><sp/>=<sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">uint64_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(result<sp/>>><sp/>64);</highlight></codeline> |
| <codeline lineno="505"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/><ref refid="classiceberg_1_1Decimal_1a26a32345b2111f0e4be1ec85bfd5da46" kindref="member">low</ref><sp/>=<sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">uint64_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(result);</highlight></codeline> |
| <codeline lineno="506"><highlight class="normal"><sp/><sp/><sp/><sp/><ref refid="classiceberg_1_1Decimal_1ab025a97f157ee7ea1a2135ad34dbb2d2" kindref="member">high</ref><sp/>=<sp/>std::byteswap(<ref refid="classiceberg_1_1Decimal_1ab025a97f157ee7ea1a2135ad34dbb2d2" kindref="member">high</ref>);</highlight></codeline> |
| <codeline lineno="507"><highlight class="normal"><sp/><sp/><sp/><sp/><ref refid="classiceberg_1_1Decimal_1a26a32345b2111f0e4be1ec85bfd5da46" kindref="member">low</ref><sp/>=<sp/>std::byteswap(<ref refid="classiceberg_1_1Decimal_1a26a32345b2111f0e4be1ec85bfd5da46" kindref="member">low</ref>);</highlight></codeline> |
| <codeline lineno="508"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>also<sp/>need<sp/>to<sp/>swap<sp/>the<sp/>two<sp/>halves</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="509"><highlight class="normal"><sp/><sp/><sp/><sp/>result<sp/>=<sp/>(</highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">uint128_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(<ref refid="classiceberg_1_1Decimal_1a26a32345b2111f0e4be1ec85bfd5da46" kindref="member">low</ref>)<sp/><<<sp/>64)<sp/>|<sp/><ref refid="classiceberg_1_1Decimal_1ab025a97f157ee7ea1a2135ad34dbb2d2" kindref="member">high</ref>;</highlight></codeline> |
| <codeline lineno="510"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="511"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="512"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(is_negative<sp/>&&<sp/>length<sp/><<sp/>kMaxDecimalBytes)<sp/>{</highlight></codeline> |
| <codeline lineno="513"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>Sign<sp/>extend<sp/>the<sp/>high<sp/>bits</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="514"><highlight class="normal"><sp/><sp/><sp/><sp/>result<sp/>|=<sp/>(</highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">uint128_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(-1)<sp/><<<sp/>(length<sp/>*<sp/>CHAR_BIT));</highlight></codeline> |
| <codeline lineno="515"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="516"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="517"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/><ref refid="classiceberg_1_1Decimal_1ae63e1b780e6ac1b118179901a0b2412a" kindref="member">Decimal</ref>(</highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">int128_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(result));</highlight></codeline> |
| <codeline lineno="518"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="519"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="520"><highlight class="normal">std::vector<uint8_t><sp/><ref refid="classiceberg_1_1Decimal_1a32bbefbbb0619f4c9c9bcc7977eb9c8c" kindref="member">Decimal::ToBigEndian</ref>()</highlight><highlight class="keyword"><sp/>const<sp/></highlight><highlight class="normal">{</highlight></codeline> |
| <codeline lineno="521"><highlight class="normal"><sp/><sp/>std::vector<uint8_t><sp/>bytes(kMaxDecimalBytes);</highlight></codeline> |
| <codeline lineno="522"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="523"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>uvalue<sp/>=<sp/></highlight><highlight class="keyword">static_cast<</highlight><highlight class="normal">uint128_t</highlight><highlight class="keyword">></highlight><highlight class="normal">(data_);</highlight></codeline> |
| <codeline lineno="524"><highlight class="normal"><sp/><sp/>std::memcpy(bytes.data(),<sp/>&uvalue,<sp/>kMaxDecimalBytes);</highlight></codeline> |
| <codeline lineno="525"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="526"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">constexpr</highlight><highlight class="normal"><sp/>(std::endian::native<sp/>==<sp/>std::endian::little)<sp/>{</highlight></codeline> |
| <codeline lineno="527"><highlight class="normal"><sp/><sp/><sp/><sp/>std::ranges::reverse(bytes);</highlight></codeline> |
| <codeline lineno="528"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="529"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="530"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal"><sp/>is_negative<sp/>=<sp/>data_<sp/><<sp/>0;</highlight></codeline> |
| <codeline lineno="531"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordtype">int</highlight><highlight class="normal"><sp/>keep<sp/>=<sp/>kMaxDecimalBytes;</highlight></codeline> |
| <codeline lineno="532"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">for</highlight><highlight class="normal"><sp/>(int32_t<sp/>i<sp/>=<sp/>0;<sp/>i<sp/><<sp/>kMaxDecimalBytes<sp/>-<sp/>1;<sp/>++i)<sp/>{</highlight></codeline> |
| <codeline lineno="533"><highlight class="normal"><sp/><sp/><sp/><sp/>uint8_t<sp/></highlight><highlight class="keywordtype">byte</highlight><highlight class="normal"><sp/>=<sp/>bytes[i];</highlight></codeline> |
| <codeline lineno="534"><highlight class="normal"><sp/><sp/><sp/><sp/>uint8_t<sp/>next<sp/>=<sp/>bytes[i<sp/>+<sp/>1];</highlight></codeline> |
| <codeline lineno="535"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>For<sp/>negative<sp/>numbers,<sp/>keep<sp/>the<sp/>leading<sp/>0xff<sp/>byte<sp/>if<sp/>the<sp/>next<sp/>byte<sp/>has<sp/>its<sp/>sign<sp/>bit</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="536"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>unset.<sp/>For<sp/>positive<sp/>numbers,<sp/>keep<sp/>the<sp/>leading<sp/>0x00<sp/>byte<sp/>if<sp/>the<sp/>next<sp/>byte<sp/>has<sp/>its</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="537"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>sign<sp/>bit<sp/>set.</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="538"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>((is_negative<sp/>&&<sp/></highlight><highlight class="keywordtype">byte</highlight><highlight class="normal"><sp/>==<sp/>0xff<sp/>&&<sp/>(next<sp/>&<sp/>0x80))<sp/>||</highlight></codeline> |
| <codeline lineno="539"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>(!is_negative<sp/>&&<sp/></highlight><highlight class="keywordtype">byte</highlight><highlight class="normal"><sp/>==<sp/>0x00<sp/>&&<sp/>!(next<sp/>&<sp/>0x80)))<sp/>{</highlight></codeline> |
| <codeline lineno="540"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/>--keep;</highlight></codeline> |
| <codeline lineno="541"><highlight class="normal"><sp/><sp/><sp/><sp/>}<sp/></highlight><highlight class="keywordflow">else</highlight><highlight class="normal"><sp/>{</highlight></codeline> |
| <codeline lineno="542"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">break</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="543"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="544"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="545"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="546"><highlight class="normal"><sp/><sp/>bytes.erase(bytes.begin(),<sp/>bytes.begin()<sp/>+<sp/>(kMaxDecimalBytes<sp/>-<sp/>keep));</highlight></codeline> |
| <codeline lineno="547"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>bytes;</highlight></codeline> |
| <codeline lineno="548"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="549"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="550"><highlight class="normal">Result<Decimal><sp/><ref refid="classiceberg_1_1Decimal_1acc3d29efbd74dee487f42a0f6dd266d3" kindref="member">Decimal::Rescale</ref>(int32_t<sp/>orig_scale,<sp/>int32_t<sp/>new_scale)</highlight><highlight class="keyword"><sp/>const<sp/></highlight><highlight class="normal">{</highlight></codeline> |
| <codeline lineno="551"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(orig_scale<sp/>==<sp/>new_scale)<sp/>{</highlight></codeline> |
| <codeline lineno="552"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>*</highlight><highlight class="keyword">this</highlight><highlight class="normal">;</highlight></codeline> |
| <codeline lineno="553"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="554"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="555"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>int32_t<sp/>delta_scale<sp/>=<sp/>new_scale<sp/>-<sp/>orig_scale;</highlight></codeline> |
| <codeline lineno="556"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>int32_t<sp/>abs_delta_scale<sp/>=<sp/>std::abs(delta_scale);</highlight></codeline> |
| <codeline lineno="557"><highlight class="normal"><sp/><sp/><ref refid="classiceberg_1_1Decimal_1ae63e1b780e6ac1b118179901a0b2412a" kindref="member">Decimal</ref><sp/>out;</highlight></codeline> |
| <codeline lineno="558"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="559"><highlight class="normal"><sp/><sp/>ICEBERG_DCHECK(abs_delta_scale<sp/><=<sp/>kMaxScale,<sp/></highlight><highlight class="stringliteral">""</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="560"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="561"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal">&<sp/>multiplier<sp/>=<sp/>kDecimal128PowersOfTen[abs_delta_scale];</highlight></codeline> |
| <codeline lineno="562"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="563"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(RescaleWouldCauseDataLoss(*</highlight><highlight class="keyword">this</highlight><highlight class="normal">,<sp/>delta_scale,<sp/>multiplier,<sp/>&out))<sp/>[[unlikely]]<sp/>{</highlight></codeline> |
| <codeline lineno="564"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>Invalid(</highlight><highlight class="stringliteral">"Rescale<sp/>{}<sp/>from<sp/>{}<sp/>to<sp/>{}<sp/>would<sp/>cause<sp/>data<sp/>loss"</highlight><highlight class="normal">,<sp/><ref refid="classiceberg_1_1Decimal_1a0bc5d140db7aa661b7eec36eba814030" kindref="member">ToIntegerString</ref>(),</highlight></codeline> |
| <codeline lineno="565"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>orig_scale,<sp/>new_scale);</highlight></codeline> |
| <codeline lineno="566"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="567"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="568"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>out;</highlight></codeline> |
| <codeline lineno="569"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="570"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="571"><highlight class="normal"></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/><ref refid="classiceberg_1_1Decimal_1a939e31479b688f7326f126b9e71f901d" kindref="member">Decimal::FitsInPrecision</ref>(int32_t<sp/>precision)</highlight><highlight class="keyword"><sp/>const<sp/></highlight><highlight class="normal">{</highlight></codeline> |
| <codeline lineno="572"><highlight class="normal"><sp/><sp/>ICEBERG_DCHECK(precision<sp/>>=<sp/>1<sp/>&&<sp/>precision<sp/><=<sp/>kMaxPrecision,<sp/></highlight><highlight class="stringliteral">""</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="573"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/><ref refid="classiceberg_1_1Decimal_1aa47f3734360f2253e82192f4c4debb86" kindref="member">Decimal::Abs</ref>(*</highlight><highlight class="keyword">this</highlight><highlight class="normal">)<sp/><<sp/>kDecimal128PowersOfTen[precision];</highlight></codeline> |
| <codeline lineno="574"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="575"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="576"><highlight class="normal">std::partial_ordering<sp/><ref refid="classiceberg_1_1Decimal_1abe0ed62190e2ebcacc4b6690e7d2094b" kindref="member">Decimal::Compare</ref>(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>lhs,<sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>rhs,</highlight></codeline> |
| <codeline lineno="577"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>int32_t<sp/>lhs_scale,<sp/>int32_t<sp/>rhs_scale)<sp/>{</highlight></codeline> |
| <codeline lineno="578"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(lhs_scale<sp/>==<sp/>rhs_scale<sp/>||<sp/>lhs.data_<sp/>==<sp/>0<sp/>||<sp/>rhs.data_<sp/>==<sp/>0)<sp/>{</highlight></codeline> |
| <codeline lineno="579"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>lhs<sp/><=><sp/>rhs;</highlight></codeline> |
| <codeline lineno="580"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="581"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="582"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>If<sp/>one<sp/>is<sp/>negative<sp/>and<sp/>the<sp/>other<sp/>is<sp/>positive,<sp/>the<sp/>positive<sp/>is<sp/>greater.</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="583"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(lhs.data_<sp/><<sp/>0<sp/>&&<sp/>rhs.data_<sp/>><sp/>0)<sp/>{</highlight></codeline> |
| <codeline lineno="584"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>std::partial_ordering::less;</highlight></codeline> |
| <codeline lineno="585"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="586"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(lhs.data_<sp/>><sp/>0<sp/>&&<sp/>rhs.data_<sp/><<sp/>0)<sp/>{</highlight></codeline> |
| <codeline lineno="587"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>std::partial_ordering::greater;</highlight></codeline> |
| <codeline lineno="588"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="589"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="590"><highlight class="normal"><sp/><sp/></highlight><highlight class="comment">//<sp/>Both<sp/>are<sp/>negative</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="591"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordtype">bool</highlight><highlight class="normal"><sp/>negative<sp/>=<sp/>lhs.data_<sp/><<sp/>0<sp/>&&<sp/>rhs.data_<sp/><<sp/>0;</highlight></codeline> |
| <codeline lineno="592"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="593"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>int32_t<sp/>delta_scale<sp/>=<sp/>lhs_scale<sp/>-<sp/>rhs_scale;</highlight></codeline> |
| <codeline lineno="594"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>int32_t<sp/>abs_delta_scale<sp/>=<sp/>std::abs(delta_scale);</highlight></codeline> |
| <codeline lineno="595"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="596"><highlight class="normal"><sp/><sp/>ICEBERG_DCHECK(abs_delta_scale<sp/><=<sp/>kMaxScale,<sp/></highlight><highlight class="stringliteral">""</highlight><highlight class="normal">);</highlight></codeline> |
| <codeline lineno="597"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="598"><highlight class="normal"><sp/><sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/></highlight><highlight class="keyword">auto</highlight><highlight class="normal">&<sp/>multiplier<sp/>=<sp/>kDecimal128PowersOfTen[abs_delta_scale];</highlight></codeline> |
| <codeline lineno="599"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="600"><highlight class="normal"><sp/><sp/><ref refid="classiceberg_1_1Decimal_1ae63e1b780e6ac1b118179901a0b2412a" kindref="member">Decimal</ref><sp/>adjusted_lhs;</highlight></codeline> |
| <codeline lineno="601"><highlight class="normal"><sp/><sp/><ref refid="classiceberg_1_1Decimal_1ae63e1b780e6ac1b118179901a0b2412a" kindref="member">Decimal</ref><sp/>adjusted_rhs;</highlight></codeline> |
| <codeline lineno="602"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="603"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(delta_scale<sp/><<sp/>0)<sp/>{</highlight></codeline> |
| <codeline lineno="604"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>lhs_scale<sp/><<sp/>rhs_scale</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="605"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(RescaleWouldCauseDataLoss(lhs,<sp/>-delta_scale,<sp/>multiplier,<sp/>&adjusted_lhs))</highlight></codeline> |
| <codeline lineno="606"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>[[unlikely]]<sp/>{</highlight></codeline> |
| <codeline lineno="607"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>negative<sp/>?<sp/>std::partial_ordering::less<sp/>:<sp/>std::partial_ordering::greater;</highlight></codeline> |
| <codeline lineno="608"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="609"><highlight class="normal"><sp/><sp/><sp/><sp/>adjusted_rhs<sp/>=<sp/>rhs;</highlight></codeline> |
| <codeline lineno="610"><highlight class="normal"><sp/><sp/>}<sp/></highlight><highlight class="keywordflow">else</highlight><highlight class="normal"><sp/>{</highlight></codeline> |
| <codeline lineno="611"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="comment">//<sp/>lhs_scale<sp/>><sp/>rhs_scale</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="612"><highlight class="normal"><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">if</highlight><highlight class="normal"><sp/>(RescaleWouldCauseDataLoss(rhs,<sp/>delta_scale,<sp/>multiplier,<sp/>&adjusted_rhs))</highlight></codeline> |
| <codeline lineno="613"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/><sp/><sp/>[[unlikely]]<sp/>{</highlight></codeline> |
| <codeline lineno="614"><highlight class="normal"><sp/><sp/><sp/><sp/><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>negative<sp/>?<sp/>std::partial_ordering::greater<sp/>:<sp/>std::partial_ordering::less;</highlight></codeline> |
| <codeline lineno="615"><highlight class="normal"><sp/><sp/><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="616"><highlight class="normal"><sp/><sp/><sp/><sp/>adjusted_lhs<sp/>=<sp/>lhs;</highlight></codeline> |
| <codeline lineno="617"><highlight class="normal"><sp/><sp/>}</highlight></codeline> |
| <codeline lineno="618"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="619"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>adjusted_lhs<sp/><=><sp/>adjusted_rhs;</highlight></codeline> |
| <codeline lineno="620"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="621"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="622"><highlight class="normal">std::array<uint8_t,<sp/>Decimal::kByteWidth><sp/><ref refid="classiceberg_1_1Decimal_1a877ddbf70f3b9f9b62bf1a5abd8d72f4" kindref="member">Decimal::ToBytes</ref>()</highlight><highlight class="keyword"><sp/>const<sp/></highlight><highlight class="normal">{</highlight></codeline> |
| <codeline lineno="623"><highlight class="normal"><sp/><sp/>std::array<uint8_t,<sp/>kByteWidth><sp/>out{{0}};</highlight></codeline> |
| <codeline lineno="624"><highlight class="normal"><sp/><sp/>std::memcpy(out.data(),<sp/>&data_,<sp/>kByteWidth);</highlight></codeline> |
| <codeline lineno="625"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>out;</highlight></codeline> |
| <codeline lineno="626"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="627"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="628"><highlight class="normal">std::ostream&<sp/>operator<<(std::ostream&<sp/>os,<sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/><ref refid="group__type-factories_1gaf9e64fe9d9556ef90130264f95b4d9f2" kindref="member">decimal</ref>)<sp/>{</highlight></codeline> |
| <codeline lineno="629"><highlight class="normal"><sp/><sp/>os<sp/><<<sp/><ref refid="group__type-factories_1gaf9e64fe9d9556ef90130264f95b4d9f2" kindref="member">decimal</ref>.ToIntegerString();</highlight></codeline> |
| <codeline lineno="630"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>os;</highlight></codeline> |
| <codeline lineno="631"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="632"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="633"><highlight class="normal"></highlight><highlight class="comment">//<sp/>Unary<sp/>operators</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="634"><highlight class="normal">Decimal<sp/>operator-(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>operand)<sp/>{</highlight></codeline> |
| <codeline lineno="635"><highlight class="normal"><sp/><sp/>Decimal<sp/>result(operand.data_);</highlight></codeline> |
| <codeline lineno="636"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>result.Negate();</highlight></codeline> |
| <codeline lineno="637"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="638"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="639"><highlight class="normal">Decimal<sp/>operator~(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>operand)<sp/>{<sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>{~operand.data_};<sp/>}</highlight></codeline> |
| <codeline lineno="640"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="641"><highlight class="normal"></highlight><highlight class="comment">//<sp/>Binary<sp/>operators</highlight><highlight class="normal"></highlight></codeline> |
| <codeline lineno="642"><highlight class="normal">Decimal<sp/>operator+(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>lhs,<sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>rhs)<sp/>{</highlight></codeline> |
| <codeline lineno="643"><highlight class="normal"><sp/><sp/>Decimal<sp/>result(lhs);</highlight></codeline> |
| <codeline lineno="644"><highlight class="normal"><sp/><sp/>result<sp/>+=<sp/>rhs;</highlight></codeline> |
| <codeline lineno="645"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>result;</highlight></codeline> |
| <codeline lineno="646"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="647"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="648"><highlight class="normal">Decimal<sp/>operator-(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>lhs,<sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>rhs)<sp/>{</highlight></codeline> |
| <codeline lineno="649"><highlight class="normal"><sp/><sp/>Decimal<sp/>result(lhs);</highlight></codeline> |
| <codeline lineno="650"><highlight class="normal"><sp/><sp/>result<sp/>-=<sp/>rhs;</highlight></codeline> |
| <codeline lineno="651"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>result;</highlight></codeline> |
| <codeline lineno="652"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="653"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="654"><highlight class="normal">Decimal<sp/>operator*(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>lhs,<sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>rhs)<sp/>{</highlight></codeline> |
| <codeline lineno="655"><highlight class="normal"><sp/><sp/>Decimal<sp/>result(lhs);</highlight></codeline> |
| <codeline lineno="656"><highlight class="normal"><sp/><sp/>result<sp/>*=<sp/>rhs;</highlight></codeline> |
| <codeline lineno="657"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>result;</highlight></codeline> |
| <codeline lineno="658"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="659"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="660"><highlight class="normal">Decimal<sp/>operator/(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>lhs,<sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>rhs)<sp/>{</highlight></codeline> |
| <codeline lineno="661"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>lhs.data_<sp/>/<sp/>rhs.data_;</highlight></codeline> |
| <codeline lineno="662"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="663"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="664"><highlight class="normal">Decimal<sp/>operator%(</highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>lhs,<sp/></highlight><highlight class="keyword">const</highlight><highlight class="normal"><sp/>Decimal&<sp/>rhs)<sp/>{</highlight></codeline> |
| <codeline lineno="665"><highlight class="normal"><sp/><sp/></highlight><highlight class="keywordflow">return</highlight><highlight class="normal"><sp/>lhs.data_<sp/>%<sp/>rhs.data_;</highlight></codeline> |
| <codeline lineno="666"><highlight class="normal">}</highlight></codeline> |
| <codeline lineno="667"><highlight class="normal"></highlight></codeline> |
| <codeline lineno="668"><highlight class="normal">}<sp/><sp/></highlight><highlight class="comment">//<sp/>namespace<sp/>iceberg</highlight><highlight class="normal"></highlight></codeline> |
| </programlisting> |
| <location file="iceberg/util/decimal.cc"/> |
| </compounddef> |
| </doxygen> |
