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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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18
simd.hh
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@ -1387,6 +1387,24 @@ static inline SIMD<int64_t, WIDTH> vsign(SIMD<int64_t, WIDTH> a, SIMD<int64_t, W
return tmp;
}
template <int WIDTH>
static inline SIMD<float, WIDTH> vcopysign(SIMD<float, WIDTH> a, SIMD<float, WIDTH> b)
{
SIMD<float, WIDTH> tmp, negz = vdup<SIMD<float, WIDTH>>(-0.f);
for (int i = 0; i < WIDTH; ++i)
tmp.u[i] = (a.u[i] & ~negz.u[i]) | (negz.u[i] & b.u[i]);
return tmp;
}
template <int WIDTH>
static inline SIMD<double, WIDTH> vcopysign(SIMD<double, WIDTH> a, SIMD<double, WIDTH> b)
{
SIMD<double, WIDTH> tmp, negz = vdup<SIMD<double, WIDTH>>(-0.);
for (int i = 0; i < WIDTH; ++i)
tmp.u[i] = (a.u[i] & ~negz.u[i]) | (negz.u[i] & b.u[i]);
return tmp;
}
template <int WIDTH>
static inline SIMD<uint8_t, WIDTH> vshuf(SIMD<uint8_t, WIDTH> a, SIMD<uint8_t, WIDTH> b)
{