/*
 * 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 <math.h>
#include <float.h>
#include "math_private.h"
#include "fpmath.h"
/*
 * scalbnl (long double x, int n)
 * scalbnl(x,n) returns x* 2**n  computed by  exponent
 * manipulation rather than by actually performing an
 * exponentiation or a multiplication.
 */
#if (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
long double scalbnl(long double x, int n)
{
        union IEEEl2bits u;

        if (n > 16383) {
                x *= 0x1p16383L;
                n -= 16383;
                if (n > 16383) {
                        x *= 0x1p16383L;
                        n -= 16383;
                        if (n > 16383)
                                n = 16383;
                }
        } else if (n < -16382) {
                x *= 0x1p-16382L * 0x1p113L;
                n += 16382 - 113;
                if (n < -16382) {
                        x *= 0x1p-16382L * 0x1p113L;
                        n += 16382 - 113;
                        if (n < -16382)
                                n = -16382;
                }
        }
        u.e = 1.0;
        u.xbits.expsign = 0x3fff + n;
        return x * u.e;
}
__strong_reference(scalbnl, ldexpl);
#endif