#define _GNU_SOURCE
#include <math.h>
#include <stdint.h>
#include "libm.h"

float exp10f(float x)
{
        static const float p10[] = {
                1e-7f, 1e-6f, 1e-5f, 1e-4f, 1e-3f, 1e-2f, 1e-1f,
                1, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7
        };
        float n, y = modff(x, &n);
        union {float f; uint32_t i;} u = {n};
        /* fabsf(n) < 8 without raising invalid on nan */
        if ((u.i>>23 & 0xff) < 0x7f+3) {
                if (!y) return p10[(int)n+7];
                y = exp2f(3.32192809488736234787031942948939f * y);
                return y * p10[(int)n+7];
        }
        return exp2(3.32192809488736234787031942948939 * x);
}

weak_alias(exp10f, pow10f);