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sleefsseavx: added horizontal min and max

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This commit is contained in:
Ingo Weyrich
2019-09-23 13:42:23 +02:00
parent 7a8225d274
commit 204475dd05
1 changed files with 12 additions and 0 deletions
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12
rtengine/sleefsseavx.c
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@@ -1390,6 +1390,18 @@ static inline float vhadd( vfloat a ) {
return _mm_cvtss_f32(_mm_add_ss(a, _mm_shuffle_ps(a, a, 1))); return _mm_cvtss_f32(_mm_add_ss(a, _mm_shuffle_ps(a, a, 1)));
} }
static inline float vhmin(vfloat a) {
// returns min(a[0], a[1], a[2], a[3])
a = vminf(a, _mm_movehl_ps(a, a));
return _mm_cvtss_f32(vminf(a, _mm_shuffle_ps(a, a, 1)));
}
static inline float vhmax(vfloat a) {
// returns max(a[0], a[1], a[2], a[3])
a = vmaxf(a, _mm_movehl_ps(a, a));
return _mm_cvtss_f32(vmaxf(a, _mm_shuffle_ps(a, a, 1)));
}
static INLINE vfloat vmul2f(vfloat a){ static INLINE vfloat vmul2f(vfloat a){
// fastest way to multiply by 2 // fastest way to multiply by 2
return a + a; return a + a;