sf_exp2.c

来自「Newlib 嵌入式 C库 标准实现代码」· C语言 代码 · 共 24 行

/* Copyright (C) 2002 by  Red Hat, Incorporated. All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software
 * is freely granted, provided that this notice is preserved.
 */

#include "fdlibm.h"

float
_DEFUN (exp2f, (float),
        float x)
{
  return powf(2.0, x);
}

#ifdef _DOUBLE_IS_32BITS

double exp2 (double x)
{
  return (double) exp2f ((float) x);
}

#endif /* _DOUBLE_IS_32BITS */