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[simd] Add qexpf function

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This commit is contained in:
Bill Currie 2021-04-25 15:02:08 +09:00
parent 590f0f18bc
commit e6bc5e3e11
1 changed files with 22 additions and 0 deletions
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22
include/QF/simd/vec4f.h
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@ -29,6 +29,7 @@
#define __QF_simd_vec4f_h
#include <immintrin.h>
#include <math.h>
#include "QF/simd/types.h"
@ -92,6 +93,7 @@ GNU89INLINE inline vec4f_t qrotf (vec4f_t a, vec4f_t b) __attribute__((const));
* That is, [-x, -y, -z, w].
*/
GNU89INLINE inline vec4f_t qconjf (vec4f_t q) __attribute__((const));
GNU89INLINE inline vec4f_t qexpf (vec4f_t q) __attribute__((const));
GNU89INLINE inline vec4f_t loadvec3f (const float *v3) __attribute__((pure));
GNU89INLINE inline void storevec3f (float *v3, vec4f_t v4);
GNU89INLINE inline vec4f_t normalf (vec4f_t v) __attribute__((pure));
@ -267,6 +269,26 @@ qconjf (vec4f_t q)
return _mm_xor_ps (q, (__m128) neg);
}
#ifndef IMPLEMENT_VEC4F_Funcs
GNU89INLINE inline
#else
VISIBLE
#endif
vec4f_t
qexpf (vec4f_t q)
{
vec4f_t th = magnitude3f (q);
float r = expf (q[3]);
if (!th[0]) {
return (vec4f_t) { 0, 0, 0, r };
}
float c = cosf (th[0]);
float s = sinf (th[0]);
vec4f_t n = (r * s) * (q / th);
n[3] = r * c;
return n;
}
#ifndef IMPLEMENT_VEC4F_Funcs
GNU89INLINE inline
#else