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/*
* Copyright (c) 2005-2020 Rich Felker, et al.
*
* SPDX-License-Identifier: MIT
*
* Please see https://git.musl-libc.org/cgit/musl/tree/COPYRIGHT
* for all contributors to musl.
*/
#include <stdint.h>
#include "math_private.h"
float scalbnf(float x, int n)
{
union {float f; uint32_t i;} u;
float y = x;
if (n > 127) {
y *= 0x1p127f;
n -= 127;
if (n > 127) {
y *= 0x1p127f;
n -= 127;
if (n > 127)
n = 127;
}
} else if (n < -126) {
y *= 0x1p-126f * 0x1p24f;
n += 126 - 24;
if (n < -126) {
y *= 0x1p-126f * 0x1p24f;
n += 126 - 24;
if (n < -126)
n = -126;
}
}
u.i = (uint32_t)(0x7f+n)<<23;
x = y * u.f;
return x;
}
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