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</pre><pre class="rust"><code><span class="comment">// Copyright 2018 Developers of the Rand project.
//
// Licensed under the Apache License, Version 2.0 &lt;LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0&gt; or the MIT license
// &lt;LICENSE-MIT or https://opensource.org/licenses/MIT&gt;, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
</span><span class="doccomment">//! Math helper functions
</span><span class="attribute">#[cfg(feature = <span class="string">&quot;simd_support&quot;</span>)] </span><span class="kw">use </span>packed_simd::<span class="kw-2">*</span>;
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">trait </span>WideningMultiply&lt;RHS = <span class="self">Self</span>&gt; {
<span class="kw">type </span>Output;
<span class="kw">fn </span>wmul(<span class="self">self</span>, x: RHS) -&gt; <span class="self">Self</span>::Output;
}
<span class="macro">macro_rules! </span>wmul_impl {
(<span class="macro-nonterminal">$ty</span>:ty, <span class="macro-nonterminal">$wide</span>:ty, <span class="macro-nonterminal">$shift</span>:expr) =&gt; {
<span class="kw">impl </span>WideningMultiply <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{
<span class="kw">type </span>Output = (<span class="macro-nonterminal">$ty</span>, <span class="macro-nonterminal">$ty</span>);
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>wmul(<span class="self">self</span>, x: <span class="macro-nonterminal">$ty</span>) -&gt; <span class="self">Self</span>::Output {
<span class="kw">let </span>tmp = (<span class="self">self </span><span class="kw">as </span><span class="macro-nonterminal">$wide</span>) * (x <span class="kw">as </span><span class="macro-nonterminal">$wide</span>);
((tmp &gt;&gt; <span class="macro-nonterminal">$shift</span>) <span class="kw">as </span><span class="macro-nonterminal">$ty</span>, tmp <span class="kw">as </span><span class="macro-nonterminal">$ty</span>)
}
}
};
<span class="comment">// simd bulk implementation
</span>($((<span class="macro-nonterminal">$ty</span>:ident, <span class="macro-nonterminal">$wide</span>:ident),)+, <span class="macro-nonterminal">$shift</span>:expr) =&gt; {
$(
<span class="kw">impl </span>WideningMultiply <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{
<span class="kw">type </span>Output = (<span class="macro-nonterminal">$ty</span>, <span class="macro-nonterminal">$ty</span>);
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>wmul(<span class="self">self</span>, x: <span class="macro-nonterminal">$ty</span>) -&gt; <span class="self">Self</span>::Output {
<span class="comment">// For supported vectors, this should compile to a couple
// supported multiply &amp; swizzle instructions (no actual
// casting).
// TODO: optimize
</span><span class="kw">let </span>y: <span class="macro-nonterminal">$wide </span>= <span class="self">self</span>.cast();
<span class="kw">let </span>x: <span class="macro-nonterminal">$wide </span>= x.cast();
<span class="kw">let </span>tmp = y * x;
<span class="kw">let </span>hi: <span class="macro-nonterminal">$ty </span>= (tmp &gt;&gt; <span class="macro-nonterminal">$shift</span>).cast();
<span class="kw">let </span>lo: <span class="macro-nonterminal">$ty </span>= tmp.cast();
(hi, lo)
}
}
)+
};
}
<span class="macro">wmul_impl! </span>{ u8, u16, <span class="number">8 </span>}
<span class="macro">wmul_impl! </span>{ u16, u32, <span class="number">16 </span>}
<span class="macro">wmul_impl! </span>{ u32, u64, <span class="number">32 </span>}
<span class="macro">wmul_impl! </span>{ u64, u128, <span class="number">64 </span>}
<span class="comment">// This code is a translation of the __mulddi3 function in LLVM&#39;s
// compiler-rt. It is an optimised variant of the common method
// `(a + b) * (c + d) = ac + ad + bc + bd`.
//
// For some reason LLVM can optimise the C version very well, but
// keeps shuffling registers in this Rust translation.
</span><span class="macro">macro_rules! </span>wmul_impl_large {
(<span class="macro-nonterminal">$ty</span>:ty, <span class="macro-nonterminal">$half</span>:expr) =&gt; {
<span class="kw">impl </span>WideningMultiply <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{
<span class="kw">type </span>Output = (<span class="macro-nonterminal">$ty</span>, <span class="macro-nonterminal">$ty</span>);
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>wmul(<span class="self">self</span>, b: <span class="macro-nonterminal">$ty</span>) -&gt; <span class="self">Self</span>::Output {
<span class="kw">const </span>LOWER_MASK: <span class="macro-nonterminal">$ty </span>= !<span class="number">0 </span>&gt;&gt; <span class="macro-nonterminal">$half</span>;
<span class="kw">let </span><span class="kw-2">mut </span>low = (<span class="self">self </span>&amp; LOWER_MASK).wrapping_mul(b &amp; LOWER_MASK);
<span class="kw">let </span><span class="kw-2">mut </span>t = low &gt;&gt; <span class="macro-nonterminal">$half</span>;
low &amp;= LOWER_MASK;
t += (<span class="self">self </span>&gt;&gt; <span class="macro-nonterminal">$half</span>).wrapping_mul(b &amp; LOWER_MASK);
low += (t &amp; LOWER_MASK) &lt;&lt; <span class="macro-nonterminal">$half</span>;
<span class="kw">let </span><span class="kw-2">mut </span>high = t &gt;&gt; <span class="macro-nonterminal">$half</span>;
t = low &gt;&gt; <span class="macro-nonterminal">$half</span>;
low &amp;= LOWER_MASK;
t += (b &gt;&gt; <span class="macro-nonterminal">$half</span>).wrapping_mul(<span class="self">self </span>&amp; LOWER_MASK);
low += (t &amp; LOWER_MASK) &lt;&lt; <span class="macro-nonterminal">$half</span>;
high += t &gt;&gt; <span class="macro-nonterminal">$half</span>;
high += (<span class="self">self </span>&gt;&gt; <span class="macro-nonterminal">$half</span>).wrapping_mul(b &gt;&gt; <span class="macro-nonterminal">$half</span>);
(high, low)
}
}
};
<span class="comment">// simd bulk implementation
</span>(($(<span class="macro-nonterminal">$ty</span>:ty,)+) <span class="macro-nonterminal">$scalar</span>:ty, <span class="macro-nonterminal">$half</span>:expr) =&gt; {
$(
<span class="kw">impl </span>WideningMultiply <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{
<span class="kw">type </span>Output = (<span class="macro-nonterminal">$ty</span>, <span class="macro-nonterminal">$ty</span>);
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>wmul(<span class="self">self</span>, b: <span class="macro-nonterminal">$ty</span>) -&gt; <span class="self">Self</span>::Output {
<span class="comment">// needs wrapping multiplication
</span><span class="kw">const </span>LOWER_MASK: <span class="macro-nonterminal">$scalar </span>= !<span class="number">0 </span>&gt;&gt; <span class="macro-nonterminal">$half</span>;
<span class="kw">let </span><span class="kw-2">mut </span>low = (<span class="self">self </span>&amp; LOWER_MASK) * (b &amp; LOWER_MASK);
<span class="kw">let </span><span class="kw-2">mut </span>t = low &gt;&gt; <span class="macro-nonterminal">$half</span>;
low &amp;= LOWER_MASK;
t += (<span class="self">self </span>&gt;&gt; <span class="macro-nonterminal">$half</span>) * (b &amp; LOWER_MASK);
low += (t &amp; LOWER_MASK) &lt;&lt; <span class="macro-nonterminal">$half</span>;
<span class="kw">let </span><span class="kw-2">mut </span>high = t &gt;&gt; <span class="macro-nonterminal">$half</span>;
t = low &gt;&gt; <span class="macro-nonterminal">$half</span>;
low &amp;= LOWER_MASK;
t += (b &gt;&gt; <span class="macro-nonterminal">$half</span>) * (<span class="self">self </span>&amp; LOWER_MASK);
low += (t &amp; LOWER_MASK) &lt;&lt; <span class="macro-nonterminal">$half</span>;
high += t &gt;&gt; <span class="macro-nonterminal">$half</span>;
high += (<span class="self">self </span>&gt;&gt; <span class="macro-nonterminal">$half</span>) * (b &gt;&gt; <span class="macro-nonterminal">$half</span>);
(high, low)
}
}
)+
};
}
<span class="macro">wmul_impl_large! </span>{ u128, <span class="number">64 </span>}
<span class="macro">macro_rules! </span>wmul_impl_usize {
(<span class="macro-nonterminal">$ty</span>:ty) =&gt; {
<span class="kw">impl </span>WideningMultiply <span class="kw">for </span>usize {
<span class="kw">type </span>Output = (usize, usize);
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>wmul(<span class="self">self</span>, x: usize) -&gt; <span class="self">Self</span>::Output {
<span class="kw">let </span>(high, low) = (<span class="self">self </span><span class="kw">as </span><span class="macro-nonterminal">$ty</span>).wmul(x <span class="kw">as </span><span class="macro-nonterminal">$ty</span>);
(high <span class="kw">as </span>usize, low <span class="kw">as </span>usize)
}
}
};
}
<span class="attribute">#[cfg(target_pointer_width = <span class="string">&quot;16&quot;</span>)]
</span><span class="macro">wmul_impl_usize! </span>{ u16 }
<span class="attribute">#[cfg(target_pointer_width = <span class="string">&quot;32&quot;</span>)]
</span><span class="macro">wmul_impl_usize! </span>{ u32 }
<span class="attribute">#[cfg(target_pointer_width = <span class="string">&quot;64&quot;</span>)]
</span><span class="macro">wmul_impl_usize! </span>{ u64 }
<span class="attribute">#[cfg(feature = <span class="string">&quot;simd_support&quot;</span>)]
</span><span class="kw">mod </span>simd_wmul {
<span class="kw">use super</span>::<span class="kw-2">*</span>;
<span class="attribute">#[cfg(target_arch = <span class="string">&quot;x86&quot;</span>)] </span><span class="kw">use </span>core::arch::x86::<span class="kw-2">*</span>;
<span class="attribute">#[cfg(target_arch = <span class="string">&quot;x86_64&quot;</span>)] </span><span class="kw">use </span>core::arch::x86_64::<span class="kw-2">*</span>;
<span class="macro">wmul_impl! </span>{
(u8x2, u16x2),
(u8x4, u16x4),
(u8x8, u16x8),
(u8x16, u16x16),
(u8x32, u16x32),,
<span class="number">8
</span>}
<span class="macro">wmul_impl! </span>{ (u16x2, u32x2),, <span class="number">16 </span>}
<span class="macro">wmul_impl! </span>{ (u16x4, u32x4),, <span class="number">16 </span>}
<span class="attribute">#[cfg(not(target_feature = <span class="string">&quot;sse2&quot;</span>))]
</span><span class="macro">wmul_impl! </span>{ (u16x8, u32x8),, <span class="number">16 </span>}
<span class="attribute">#[cfg(not(target_feature = <span class="string">&quot;avx2&quot;</span>))]
</span><span class="macro">wmul_impl! </span>{ (u16x16, u32x16),, <span class="number">16 </span>}
<span class="comment">// 16-bit lane widths allow use of the x86 `mulhi` instructions, which
// means `wmul` can be implemented with only two instructions.
</span><span class="attribute">#[allow(unused_macros)]
</span><span class="macro">macro_rules! </span>wmul_impl_16 {
(<span class="macro-nonterminal">$ty</span>:ident, <span class="macro-nonterminal">$intrinsic</span>:ident, <span class="macro-nonterminal">$mulhi</span>:ident, <span class="macro-nonterminal">$mullo</span>:ident) =&gt; {
<span class="kw">impl </span>WideningMultiply <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{
<span class="kw">type </span>Output = (<span class="macro-nonterminal">$ty</span>, <span class="macro-nonterminal">$ty</span>);
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>wmul(<span class="self">self</span>, x: <span class="macro-nonterminal">$ty</span>) -&gt; <span class="self">Self</span>::Output {
<span class="kw">let </span>b = <span class="macro-nonterminal">$intrinsic::from_bits</span>(x);
<span class="kw">let </span>a = <span class="macro-nonterminal">$intrinsic::from_bits</span>(<span class="self">self</span>);
<span class="kw">let </span>hi = <span class="macro-nonterminal">$ty::from_bits</span>(<span class="kw">unsafe </span>{ <span class="macro-nonterminal">$mulhi</span>(a, b) });
<span class="kw">let </span>lo = <span class="macro-nonterminal">$ty::from_bits</span>(<span class="kw">unsafe </span>{ <span class="macro-nonterminal">$mullo</span>(a, b) });
(hi, lo)
}
}
};
}
<span class="attribute">#[cfg(target_feature = <span class="string">&quot;sse2&quot;</span>)]
</span><span class="macro">wmul_impl_16! </span>{ u16x8, __m128i, _mm_mulhi_epu16, _mm_mullo_epi16 }
<span class="attribute">#[cfg(target_feature = <span class="string">&quot;avx2&quot;</span>)]
</span><span class="macro">wmul_impl_16! </span>{ u16x16, __m256i, _mm256_mulhi_epu16, _mm256_mullo_epi16 }
<span class="comment">// FIXME: there are no `__m512i` types in stdsimd yet, so `wmul::&lt;u16x32&gt;`
// cannot use the same implementation.
</span><span class="macro">wmul_impl! </span>{
(u32x2, u64x2),
(u32x4, u64x4),
(u32x8, u64x8),,
<span class="number">32
</span>}
<span class="comment">// TODO: optimize, this seems to seriously slow things down
</span><span class="macro">wmul_impl_large! </span>{ (u8x64,) u8, <span class="number">4 </span>}
<span class="macro">wmul_impl_large! </span>{ (u16x32,) u16, <span class="number">8 </span>}
<span class="macro">wmul_impl_large! </span>{ (u32x16,) u32, <span class="number">16 </span>}
<span class="macro">wmul_impl_large! </span>{ (u64x2, u64x4, u64x8,) u64, <span class="number">32 </span>}
}
<span class="doccomment">/// Helper trait when dealing with scalar and SIMD floating point types.
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">trait </span>FloatSIMDUtils {
<span class="comment">// `PartialOrd` for vectors compares lexicographically. We want to compare all
// the individual SIMD lanes instead, and get the combined result over all
// lanes. This is possible using something like `a.lt(b).all()`, but we
// implement it as a trait so we can write the same code for `f32` and `f64`.
// Only the comparison functions we need are implemented.
</span><span class="kw">fn </span>all_lt(<span class="self">self</span>, other: <span class="self">Self</span>) -&gt; bool;
<span class="kw">fn </span>all_le(<span class="self">self</span>, other: <span class="self">Self</span>) -&gt; bool;
<span class="kw">fn </span>all_finite(<span class="self">self</span>) -&gt; bool;
<span class="kw">type </span>Mask;
<span class="kw">fn </span>finite_mask(<span class="self">self</span>) -&gt; <span class="self">Self</span>::Mask;
<span class="kw">fn </span>gt_mask(<span class="self">self</span>, other: <span class="self">Self</span>) -&gt; <span class="self">Self</span>::Mask;
<span class="kw">fn </span>ge_mask(<span class="self">self</span>, other: <span class="self">Self</span>) -&gt; <span class="self">Self</span>::Mask;
<span class="comment">// Decrease all lanes where the mask is `true` to the next lower value
// representable by the floating-point type. At least one of the lanes
// must be set.
</span><span class="kw">fn </span>decrease_masked(<span class="self">self</span>, mask: <span class="self">Self</span>::Mask) -&gt; <span class="self">Self</span>;
<span class="comment">// Convert from int value. Conversion is done while retaining the numerical
// value, not by retaining the binary representation.
</span><span class="kw">type </span>UInt;
<span class="kw">fn </span>cast_from_int(i: <span class="self">Self</span>::UInt) -&gt; <span class="self">Self</span>;
}
<span class="doccomment">/// Implement functions available in std builds but missing from core primitives
</span><span class="attribute">#[cfg(not(std))]
</span><span class="comment">// False positive: We are following `std` here.
</span><span class="attribute">#[allow(clippy::wrong_self_convention)]
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">trait </span>Float: Sized {
<span class="kw">fn </span>is_nan(<span class="self">self</span>) -&gt; bool;
<span class="kw">fn </span>is_infinite(<span class="self">self</span>) -&gt; bool;
<span class="kw">fn </span>is_finite(<span class="self">self</span>) -&gt; bool;
}
<span class="doccomment">/// Implement functions on f32/f64 to give them APIs similar to SIMD types
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">trait </span>FloatAsSIMD: Sized {
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>lanes() -&gt; usize {
<span class="number">1
</span>}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>splat(scalar: <span class="self">Self</span>) -&gt; <span class="self">Self </span>{
scalar
}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>extract(<span class="self">self</span>, index: usize) -&gt; <span class="self">Self </span>{
<span class="macro">debug_assert_eq!</span>(index, <span class="number">0</span>);
<span class="self">self
</span>}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>replace(<span class="self">self</span>, index: usize, new_value: <span class="self">Self</span>) -&gt; <span class="self">Self </span>{
<span class="macro">debug_assert_eq!</span>(index, <span class="number">0</span>);
new_value
}
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">trait </span>BoolAsSIMD: Sized {
<span class="kw">fn </span>any(<span class="self">self</span>) -&gt; bool;
<span class="kw">fn </span>all(<span class="self">self</span>) -&gt; bool;
<span class="kw">fn </span>none(<span class="self">self</span>) -&gt; bool;
}
<span class="kw">impl </span>BoolAsSIMD <span class="kw">for </span>bool {
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>any(<span class="self">self</span>) -&gt; bool {
<span class="self">self
</span>}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>all(<span class="self">self</span>) -&gt; bool {
<span class="self">self
</span>}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>none(<span class="self">self</span>) -&gt; bool {
!<span class="self">self
</span>}
}
<span class="macro">macro_rules! </span>scalar_float_impl {
(<span class="macro-nonterminal">$ty</span>:ident, <span class="macro-nonterminal">$uty</span>:ident) =&gt; {
<span class="attribute">#[cfg(not(std))]
</span><span class="kw">impl </span>Float <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{
<span class="attribute">#[inline]
</span><span class="kw">fn </span>is_nan(<span class="self">self</span>) -&gt; bool {
<span class="self">self </span>!= <span class="self">self
</span>}
<span class="attribute">#[inline]
</span><span class="kw">fn </span>is_infinite(<span class="self">self</span>) -&gt; bool {
<span class="self">self </span>== ::core::<span class="macro-nonterminal">$ty::INFINITY </span>|| <span class="self">self </span>== ::core::<span class="macro-nonterminal">$ty::NEG_INFINITY
</span>}
<span class="attribute">#[inline]
</span><span class="kw">fn </span>is_finite(<span class="self">self</span>) -&gt; bool {
!(<span class="self">self</span>.is_nan() || <span class="self">self</span>.is_infinite())
}
}
<span class="kw">impl </span>FloatSIMDUtils <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{
<span class="kw">type </span>Mask = bool;
<span class="kw">type </span>UInt = <span class="macro-nonterminal">$uty</span>;
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>all_lt(<span class="self">self</span>, other: <span class="self">Self</span>) -&gt; bool {
<span class="self">self </span>&lt; other
}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>all_le(<span class="self">self</span>, other: <span class="self">Self</span>) -&gt; bool {
<span class="self">self </span>&lt;= other
}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>all_finite(<span class="self">self</span>) -&gt; bool {
<span class="self">self</span>.is_finite()
}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>finite_mask(<span class="self">self</span>) -&gt; <span class="self">Self</span>::Mask {
<span class="self">self</span>.is_finite()
}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>gt_mask(<span class="self">self</span>, other: <span class="self">Self</span>) -&gt; <span class="self">Self</span>::Mask {
<span class="self">self </span>&gt; other
}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>ge_mask(<span class="self">self</span>, other: <span class="self">Self</span>) -&gt; <span class="self">Self</span>::Mask {
<span class="self">self </span>&gt;= other
}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>decrease_masked(<span class="self">self</span>, mask: <span class="self">Self</span>::Mask) -&gt; <span class="self">Self </span>{
<span class="macro">debug_assert!</span>(mask, <span class="string">&quot;At least one lane must be set&quot;</span>);
&lt;<span class="macro-nonterminal">$ty</span>&gt;::from_bits(<span class="self">self</span>.to_bits() - <span class="number">1</span>)
}
<span class="attribute">#[inline]
</span><span class="kw">fn </span>cast_from_int(i: <span class="self">Self</span>::UInt) -&gt; <span class="self">Self </span>{
i <span class="kw">as </span><span class="macro-nonterminal">$ty
</span>}
}
<span class="kw">impl </span>FloatAsSIMD <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{}
};
}
<span class="macro">scalar_float_impl!</span>(f32, u32);
<span class="macro">scalar_float_impl!</span>(f64, u64);
<span class="attribute">#[cfg(feature = <span class="string">&quot;simd_support&quot;</span>)]
</span><span class="macro">macro_rules! </span>simd_impl {
(<span class="macro-nonterminal">$ty</span>:ident, <span class="macro-nonterminal">$f_scalar</span>:ident, <span class="macro-nonterminal">$mty</span>:ident, <span class="macro-nonterminal">$uty</span>:ident) =&gt; {
<span class="kw">impl </span>FloatSIMDUtils <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{
<span class="kw">type </span>Mask = <span class="macro-nonterminal">$mty</span>;
<span class="kw">type </span>UInt = <span class="macro-nonterminal">$uty</span>;
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>all_lt(<span class="self">self</span>, other: <span class="self">Self</span>) -&gt; bool {
<span class="self">self</span>.lt(other).all()
}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>all_le(<span class="self">self</span>, other: <span class="self">Self</span>) -&gt; bool {
<span class="self">self</span>.le(other).all()
}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>all_finite(<span class="self">self</span>) -&gt; bool {
<span class="self">self</span>.finite_mask().all()
}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>finite_mask(<span class="self">self</span>) -&gt; <span class="self">Self</span>::Mask {
<span class="comment">// This can possibly be done faster by checking bit patterns
</span><span class="kw">let </span>neg_inf = <span class="macro-nonterminal">$ty::splat</span>(::core::<span class="macro-nonterminal">$f_scalar::NEG_INFINITY</span>);
<span class="kw">let </span>pos_inf = <span class="macro-nonterminal">$ty::splat</span>(::core::<span class="macro-nonterminal">$f_scalar::INFINITY</span>);
<span class="self">self</span>.gt(neg_inf) &amp; <span class="self">self</span>.lt(pos_inf)
}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>gt_mask(<span class="self">self</span>, other: <span class="self">Self</span>) -&gt; <span class="self">Self</span>::Mask {
<span class="self">self</span>.gt(other)
}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>ge_mask(<span class="self">self</span>, other: <span class="self">Self</span>) -&gt; <span class="self">Self</span>::Mask {
<span class="self">self</span>.ge(other)
}
<span class="attribute">#[inline(always)]
</span><span class="kw">fn </span>decrease_masked(<span class="self">self</span>, mask: <span class="self">Self</span>::Mask) -&gt; <span class="self">Self </span>{
<span class="comment">// Casting a mask into ints will produce all bits set for
// true, and 0 for false. Adding that to the binary
// representation of a float means subtracting one from
// the binary representation, resulting in the next lower
// value representable by $ty. This works even when the
// current value is infinity.
</span><span class="macro">debug_assert!</span>(mask.any(), <span class="string">&quot;At least one lane must be set&quot;</span>);
&lt;<span class="macro-nonterminal">$ty</span>&gt;::from_bits(&lt;<span class="macro-nonterminal">$uty</span>&gt;::from_bits(<span class="self">self</span>) + &lt;<span class="macro-nonterminal">$uty</span>&gt;::from_bits(mask))
}
<span class="attribute">#[inline]
</span><span class="kw">fn </span>cast_from_int(i: <span class="self">Self</span>::UInt) -&gt; <span class="self">Self </span>{
i.cast()
}
}
};
}
<span class="attribute">#[cfg(feature=<span class="string">&quot;simd_support&quot;</span>)] </span><span class="macro">simd_impl! </span>{ f32x2, f32, m32x2, u32x2 }
<span class="attribute">#[cfg(feature=<span class="string">&quot;simd_support&quot;</span>)] </span><span class="macro">simd_impl! </span>{ f32x4, f32, m32x4, u32x4 }
<span class="attribute">#[cfg(feature=<span class="string">&quot;simd_support&quot;</span>)] </span><span class="macro">simd_impl! </span>{ f32x8, f32, m32x8, u32x8 }
<span class="attribute">#[cfg(feature=<span class="string">&quot;simd_support&quot;</span>)] </span><span class="macro">simd_impl! </span>{ f32x16, f32, m32x16, u32x16 }
<span class="attribute">#[cfg(feature=<span class="string">&quot;simd_support&quot;</span>)] </span><span class="macro">simd_impl! </span>{ f64x2, f64, m64x2, u64x2 }
<span class="attribute">#[cfg(feature=<span class="string">&quot;simd_support&quot;</span>)] </span><span class="macro">simd_impl! </span>{ f64x4, f64, m64x4, u64x4 }
<span class="attribute">#[cfg(feature=<span class="string">&quot;simd_support&quot;</span>)] </span><span class="macro">simd_impl! </span>{ f64x8, f64, m64x8, u64x8 }
</code></pre></div>
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