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

int __fpclassifyf(float x)
{
        union {float f; uint32_t i;} u = {x};
        int e = u.i>>23 & 0xff;
        if (!e) return u.i<<1 ? FP_SUBNORMAL : FP_ZERO;
        if (e==0xff) return u.i<<9 ? FP_NAN : FP_INFINITE;
        return FP_NORMAL;
}