lib/libm/fabs.c


1
2
3
4
5
6
7
8
9
10
11
12

#include <math.h>
#include <stdint.h>

double fabs(double x)
{
	union {
		double f;
		uint64_t i;
	} u = { x };
	u.i &= -1ULL / 2;
	return u.f;
}