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Fixed macro's to detect 64bit

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This commit is contained in:
Nassim Amar
2015-02-01 14:32:37 -08:00
parent cf705d6fa4
commit e9c7f3a0d2
1 changed files with 12 additions and 12 deletions
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24
src/LinearMath/btScalar.h
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@@ -418,7 +418,17 @@ SIMD_FORCE_INLINE btScalar btFmod(btScalar x,btScalar y) { return fmod(x,y); }
SIMD_FORCE_INLINE btScalar btSqrt(btScalar y)
{
#ifdef USE_APPROXIMATION
#ifdef __arm__
#ifdef __LP64__
float xhalf = 0.5f*y;
int i = *(int*)&y;
i = 0x5f375a86 - (i>>1);
y = *(float*)&i;
y = y*(1.5f - xhalf*y*y);
y = y*(1.5f - xhalf*y*y);
y = y*(1.5f - xhalf*y*y);
y=1/y;
return y;
#else
double x, z, tempf;
unsigned long *tfptr = ((unsigned long *)&tempf) + 1;
tempf = y;
@@ -431,19 +441,9 @@ SIMD_FORCE_INLINE btScalar btSqrt(btScalar y)
x = (btScalar(1.5)*x)-(x*x)*(x*z);
x = (btScalar(1.5)*x)-(x*x)*(x*z);
return x*y;
#elif __arm64__
float xhalf = 0.5f*y;
int i = *(int*)&y;
i = 0x5f375a86 - (i>>1);
y = *(float*)&i;
y = y*(1.5f - xhalf*y*y);
y = y*(1.5f - xhalf*y*y);
y = y*(1.5f - xhalf*y*y);
y=1/y;
return y;
#endif
#else
return sqrtf(y);
return sqrtf(y);
#endif
}
SIMD_FORCE_INLINE btScalar btFabs(btScalar x) { return fabsf(x); }