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This commit is contained in:
Henrik Rydgård
2026-06-04 10:03:29 +02:00
parent 1cc0062120
commit c697496364
1 changed files with 13 additions and 1 deletions
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Common/Math/CrossSIMD.h
+13 -1
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@@ -1169,7 +1169,19 @@ struct Vec4F32 {
}
// NOTE: May be slow.
float operator[](size_t index) const { return ((float *)&v)[index]; }
float operator[](size_t index) const {
// index is a compile-time constant parameter to the intrinsic.
int ival;
switch (index) {
case 0: ival = __lsx_vpickve2gr_w((__m128i)v, 0);
case 1: ival = __lsx_vpickve2gr_w((__m128i)v, 1);
case 2: ival = __lsx_vpickve2gr_w((__m128i)v, 2);
default: ival = __lsx_vpickve2gr_w((__m128i)v, 3);
}
float fval;
memcpy(&fval, &ival, sizeof(float));
return fval;
}
Vec4F32 operator +(Vec4F32 other) const { return Vec4F32{ (__m128)__lsx_vfadd_s(v, other.v) }; }
Vec4F32 operator -(Vec4F32 other) const { return Vec4F32{ (__m128)__lsx_vfsub_s(v, other.v) }; }