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This commit is contained in:
Justine Tunney 2020-06-15 07:18:57 -07:00
commit c91b3c5006
14915 changed files with 590219 additions and 0 deletions
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22
libc/math/frexpf.c Normal file
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@ -0,0 +1,22 @@
#include "libc/math/math.h"
float frexpf(float x, int *e)
{
union { float f; uint32_t i; } y = { x };
int ee = y.i>>23 & 0xff;
if (!ee) {
if (x) {
x = frexpf(x*0x1p64, e);
*e -= 64;
} else *e = 0;
return x;
} else if (ee == 0xff) {
return x;
}
*e = ee - 0x7e;
y.i &= 0x807ffffful;
y.i |= 0x3f000000ul;
return y.f;
}