blob: 36ea7481fc402a55075c59b9cbac36b6714712da (
plain) (
tree)
|
|
#include <math.h>
float fabsf(float x)
{
float t;
__asm__ ("pcmpeqd %0, %0" : "=x"(t)); // t = ~0
__asm__ ("psrld $1, %0" : "+x"(t)); // t >>= 1
__asm__ ("andps %1, %0" : "+x"(x) : "x"(t)); // x &= t
return x;
}
|