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Runtime/math matches; better libc headers

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Former-commit-id: bef7db1748
This commit is contained in:
Luke Street
2022-08-25 23:46:24 -04:00
parent 75f08901d8
commit 00c77e6195
116 changed files with 5434 additions and 973 deletions
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18
include/math_ppc.h
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@@ -1,22 +1,4 @@
#ifndef _MATH_PPC_H_
#define _MATH_PPC_H_
inline float sqrtf(float x)
{
static const double _half=.5;
static const double _three=3.0;
volatile float y;
if(x > 0.0f)
{
double guess = __frsqrte((double)x); /* returns an approximation to */
guess = _half*guess*(_three - guess*guess*x); /* now have 12 sig bits */
guess = _half*guess*(_three - guess*guess*x); /* now have 24 sig bits */
guess = _half*guess*(_three - guess*guess*x); /* now have 32 sig bits */
y=(float)(x*guess);
return y ;
}
return x ;
}
#endif