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added vcopysign()

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This commit is contained in:
Ahmet Inan 2021-06-26 08:00:52 +02:00
commit 6cddcef660
4 changed files with 73 additions and 0 deletions
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22
sse4_1.hh
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@ -598,6 +598,28 @@ inline SIMD<int32_t, 4> vsign(SIMD<int32_t, 4> a, SIMD<int32_t, 4> b)
return tmp;
}
template <>
inline SIMD<float, 4> vcopysign(SIMD<float, 4> a, SIMD<float, 4> b)
{
SIMD<float, 4> tmp;
__m128 negz = _mm_set1_ps(-0.f);
tmp.m = _mm_or_ps(
_mm_andnot_ps(negz, a.m),
_mm_and_ps(negz, b.m));
return tmp;
}
template <>
inline SIMD<double, 2> vcopysign(SIMD<double, 2> a, SIMD<double, 2> b)
{
SIMD<double, 2> tmp;
__m128 negz = _mm_set1_pd(-0.);
tmp.m = _mm_or_pd(
_mm_andnot_pd(negz, a.m),
_mm_and_pd(negz, b.m));
return tmp;
}
template <>
inline SIMD<uint8_t, 16> vorr(SIMD<uint8_t, 16> a, SIMD<uint8_t, 16> b)
{