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refactor vec4 : glm_vec4_distance for SSE/SSE2

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According to suggestion by recp at
https://github.com/recp/cglm/issues/82#issuecomment-483051704.
This commit is contained in:
Wasin Thonkaew
2019-04-19 02:07:57 +08:00
parent 8f2f2c5572
commit 461a4009ba
1 changed files with 1 additions and 6 deletions
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7
include/cglm/vec4.h
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@@ -690,12 +690,7 @@ CGLM_INLINE
float float
glm_vec4_distance(vec4 a, vec4 b) { glm_vec4_distance(vec4 a, vec4 b) {
#if defined( __SSE__ ) || defined( __SSE2__ ) #if defined( __SSE__ ) || defined( __SSE2__ )
__m128 x0; return glmm_norm(_mm_sub_ps(glmm_load(b), glmm_load(a)));
x0 = _mm_sub_ps(glmm_load(b), glmm_load(a));
x0 = _mm_mul_ps(x0, x0);
x0 = _mm_add_ps(x0, glmm_shuff1(x0, 1, 0, 3, 2));
return _mm_cvtss_f32(_mm_sqrt_ss(_mm_add_ss(x0,
glmm_shuff1(x0, 0, 1, 0, 1))));
#elif defined(CGLM_NEON_FP) #elif defined(CGLM_NEON_FP)
return glmm_norm(vsubq_f32(glmm_load(a), glmm_load(b))); return glmm_norm(vsubq_f32(glmm_load(a), glmm_load(b)));
#else #else