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| <TITLE>min()</TITLE> |
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| <A HREF="messages.html"><IMG SRC="images/bprev.gif" WIDTH=20 HEIGHT=21 ALT="Previous file" BORDER=O></A><A HREF="noframes.html"><IMG SRC="images/btop.gif" WIDTH=56 HEIGHT=21 ALT="Top of Document" BORDER=O></A><A HREF="booktoc.html"><IMG SRC="images/btoc.gif" WIDTH=56 HEIGHT=21 ALT="Contents" BORDER=O></A><A HREF="tindex.html"><IMG SRC="images/bindex.gif" WIDTH=56 HEIGHT=21 ALT="Index page" BORDER=O></A><A HREF="min-element.html"><IMG SRC="images/bnext.gif" WIDTH=25 HEIGHT=21 ALT="Next file" BORDER=O></A><DIV CLASS="DOCUMENTNAME"><B>Apache C++ Standard Library Reference Guide</B></DIV> |
| <H2>min()</H2> |
| <P><B>Library:</B> <A HREF="2-9.html">Algorithms</A></P> |
| |
| <PRE><HR><B><I>Function</I></B><HR></PRE> |
| |
| <UL> |
| <LI><A HREF="#sec1">Local Index</A></LI> |
| <LI><A HREF="#sec2">Summary</A></LI> |
| <LI><A HREF="#sec3">Synopsis</A></LI> |
| <LI><A HREF="#sec4">Description</A></LI> |
| <LI><A HREF="#sec5">Example</A></LI> |
| <LI><A HREF="#sec6">See Also</A></LI> |
| <LI><A HREF="#sec7">Standards Conformance</A></LI> |
| </UL> |
| <A NAME="sec1"><H3>Local Index</H3></A> |
| No Entries |
| <A NAME="sec2"><H3>Summary</H3></A> |
| <P>Algorithm that returns the minimum of a pair of values</P> |
| <A NAME="sec3"><H3>Synopsis</H3></A> |
| |
| <PRE>#include <algorithm> |
| |
| namespace std { |
| template <class T> |
| const T& min(const T&, const T&); |
| |
| template <class T, class Compare> |
| const T& min(const T& a, const T&, Compare); |
| } |
| </PRE> |
| <A NAME="sec4"><H3>Description</H3></A> |
| <P>The <SAMP>min()</SAMP> algorithm determines and returns the minimum of a pair of values. In the second version of the algorithm, the argument <SAMP>Compare</SAMP> defines a function object that can be used in place of <SAMP>operator<()</SAMP>.</P> |
| <P><SAMP>min()</SAMP> returns the first argument when the two arguments are equal.</P> |
| <A NAME="sec5"><H3>Example</H3></A> |
| |
| <UL><PRE>// |
| // max.cpp |
| // |
| |
| #include <algorithm> // for max, min |
| #include <functional> // for greater |
| #include <iostream> // for cout |
| |
| |
| int main () |
| { |
| double d1 = 10.0, d2 = 20.0; |
| |
| // Find minimum. |
| double val1 = std::min (d1, d2); |
| |
| // The greater comparator returns the greater of |
| // the two values. |
| double val2 = std::min (d1, d2, std::greater<double>()); |
| |
| // Find minimum. |
| double val3 = std::max (d1, d2); |
| |
| // The less comparator returns the smaller of |
| // the two values. |
| |
| // Note that, like every comparison in the library, max is |
| // defined in terms of the < operator, so using less here |
| // is the same as using the max algorithm with a default |
| // comparator. |
| double val4 = std::max(d1, d2, std::less<double>()); |
| |
| std::cout << val1 << " " << val2 << " " |
| << val3 << " " << val4 << std::endl; |
| |
| return 0; |
| } |
| |
| |
| Program Output: |
| </PRE></UL> |
| <UL><PRE>10 20 20 20 |
| </PRE></UL> |
| <A NAME="sec6"><H3>See Also</H3></A> |
| <P><SAMP><A HREF="max.html">max()</A></SAMP>, <SAMP><A HREF="max-element.html">max_element()</A></SAMP>, <SAMP><A HREF="min-element.html">min_element()</A></SAMP></P> |
| <A NAME="sec7"><H3>Standards Conformance</H3></A> |
| <P><I>ISO/IEC 14882:1998 -- International Standard for Information Systems -- Programming Language C++, Section 25.3.7</I></P> |
| |
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