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optimize normalize quaternion with SIMD

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* provide _to version for storing into another quat
This commit is contained in:
Recep Aslantas
2018-04-11 00:17:41 +03:00
parent 5dec68823c
commit 010dcc9837
2 changed files with 48 additions and 10 deletions
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10
include/cglm/simd/intrin.h
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@@ -30,6 +30,16 @@
# define _mm_shuffle2_ps(a, b, z0, y0, x0, w0, z1, y1, x1, w1) \
_mm_shuffle1_ps(_mm_shuffle_ps(a, b, _MM_SHUFFLE(z0, y0, x0, w0)), \
z1, y1, x1, w1)
CGLM_INLINE
__m128
glm_simd_dot(__m128 a, __m128 b) {
__m128 x0;
x0 = _mm_mul_ps(a, b);
x0 = _mm_add_ps(x0, _mm_shuffle1_ps(x0, 1, 0, 3, 2));
return _mm_add_ps(x0, _mm_shuffle1_ps(x0, 0, 1, 0, 1));
}
#endif
/* x86, x64 */