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Match CMath::FastArcCosR

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This commit is contained in:
Phillip Stephens
2026-01-08 01:44:11 -08:00
parent cdf84910ea
commit 0a64e26e5e
1 changed files with 21 additions and 1 deletions
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src/Kyoto/Math/RMathUtils.cpp
+21 -1
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@@ -98,7 +98,27 @@ float CMath::FastSinR(float x) {
float CMath::FastCosR(float x) {}
float CMath::FastArcCosR(float x) {}
float CMath::FastArcCosR(float f1) {
if (fabs(f1) > 0.925000011920929) {
return acosf(f1);
}
// TODO: can mess be simplified?
float f4 = f1 * f1;
float f5 = 1.5707964f;
float f0 = -0.9982272f;
float f3 = -0.20586604f;
f5 = (f1 * f0) + f5;
float f2 = 0.114254236f;
f1 = (f1 * f4);
f0 = -0.29697824f;
f5 = (f1 * f3) + f5;
f1 = (f1 * f4);
f5 = (f1 * f2) + f5;
f1 = (f1 * f4);
f5 = (f1 * f0) + f5;
return f5;
}
int CMath::FloorPowerOfTwo(int v) {
if (v == 0) {