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ÂSome speedups for scalar sleef functions

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This commit is contained in:
heckflosse
2018-01-07 22:59:24 +01:00
parent 7de3a24050
commit 393d62bdb6
3 changed files with 1150 additions and 7 deletions
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1142
rtengine/curves.h.save-failed Normal file
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File diff suppressed because it is too large Load Diff

2
rtengine/rt_math.h
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@@ -25,6 +25,8 @@ constexpr double RT_NAN = std::numeric_limits<double>::quiet_NaN();
constexpr float RT_PI_F = RT_PI;
constexpr float RT_PI_F_2 = RT_PI_2;
constexpr float RT_PI_F_180 = RT_PI_180;
constexpr float RT_1_PI_F = RT_1_PI;
constexpr float RT_2_PI_F = RT_2_PI;
constexpr float RT_INFINITY_F = std::numeric_limits<float>::infinity();
constexpr float RT_NAN_F = std::numeric_limits<float>::quiet_NaN();

13
rtengine/sleef.c
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@@ -923,9 +923,8 @@ __inline float mulsignf(float x, float y) {
return intBitsToFloat(floatToRawIntBits(x) ^ (floatToRawIntBits(y) & (1 << 31)));
}
__inline float signf(float d) { return mulsignf(1, d); }
__inline float signf(float d) { return copysign(1, d); }
__inline float mlaf(float x, float y, float z) { return x * y + z; }
__inline float xrintf(float x) { return x < 0 ? (int)(x - 0.5f) : (int)(x + 0.5f); }
__inline int xisnanf(float x) { return x != x; }
__inline int xisinff(float x) { return x == rtengine::RT_INFINITY_F || x == -rtengine::RT_INFINITY_F; }
@@ -984,7 +983,7 @@ __inline float xsinf(float d) {
int q;
float u, s;
q = (int)xrintf(d * (float)rtengine::RT_1_PI);
q = rint(d * rtengine::RT_1_PI_F);
d = mlaf(q, -PI4_Af*4, d);
d = mlaf(q, -PI4_Bf*4, d);
@@ -1009,7 +1008,7 @@ __inline float xcosf(float d) {
int q;
float u, s;
q = 1 + 2*(int)xrintf(d * (float)rtengine::RT_1_PI - 0.5f);
q = 1 + 2*rint(d * rtengine::RT_1_PI_F - 0.5f);
d = mlaf(q, -PI4_Af*2, d);
d = mlaf(q, -PI4_Bf*2, d);
@@ -1035,7 +1034,7 @@ __inline float2 xsincosf(float d) {
float u, s, t;
float2 r;
q = (int)rint(d * ((float)(2 * rtengine::RT_1_PI)));
q = rint(d * rtengine::RT_2_PI_F);
s = d;
@@ -1076,7 +1075,7 @@ __inline float xtanf(float d) {
int q;
float u, s, x;
q = (int)xrintf(d * (float)(2 * rtengine::RT_1_PI));
q = rint(d * (float)(2 * rtengine::RT_1_PI));
x = d;
@@ -1202,7 +1201,7 @@ __inline float xlogf(float d) {
__inline float xexpf(float d) {
if(d<=-104.0f) return 0.0f;
int q = (int)xrintf(d * R_LN2f);
int q = rint(d * R_LN2f);
float s, u;
s = mlaf(q, -L2Uf, d);