source: azure_iot_hub/trunk/musl-1.1.18/src/math/fabsf.c@ 388

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

float fabsf(float x)
{
        union {float f; uint32_t i;} u = {x};
        u.i &= 0x7fffffff;
        return u.f;
}