mingw-w64-crt/math/arm-common/exp2.c

/**
 * This file has no copyright assigned and is placed in the Public Domain.
 * This file is part of the mingw-w64 runtime package.
 * No warranty is given; refer to the file DISCLAIMER.PD within this package.
 */

#include <math.h>

double exp2(double x)
{
    return pow(2.0, x);
}