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quat: optimize normalize quat

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Recep Aslantas
2016-11-29 17:29:36 +02:00
parent 4c2271bfd5
commit 8d5dc3b2e7
1 changed files with 3 additions and 8 deletions
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9
include/cglm-quat.h
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@@ -58,7 +58,7 @@ glm_quat_norm(versor q) {
CGLM_INLINE CGLM_INLINE
void void
glm_quat_normalize(versor q) { glm_quat_normalize(versor q) {
float sum, norm; float sum;
sum = q[0] * q[0] + q[1] * q[1] sum = q[0] * q[0] + q[1] * q[1]
+ q[2] * q[2] + q[3] * q[3]; + q[2] * q[2] + q[3] * q[3];
@@ -66,12 +66,7 @@ glm_quat_normalize(versor q) {
if (fabs(1.0f - sum) < 0.0001f) if (fabs(1.0f - sum) < 0.0001f)
return; return;
norm = sqrtf(sum); glm_vec4_scale(q, 1.0f / sqrtf(sum), q);
q[0] = q[0] / norm;
q[1] = q[1] / norm;
q[2] = q[2] / norm;
q[3] = q[3] / norm;
} }
CGLM_INLINE CGLM_INLINE