49 lines
975 B
C
49 lines
975 B
C
/* wf_exp2.c -- float version of w_exp2.c.
|
|
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
|
|
*/
|
|
|
|
/*
|
|
* ====================================================
|
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
|
*
|
|
* Developed at SunPro, a Sun Microsystems, Inc. business.
|
|
* Permission to use, copy, modify, and distribute this
|
|
* software is freely granted, provided that this notice
|
|
* is preserved.
|
|
* ====================================================
|
|
*/
|
|
|
|
/*
|
|
* wrapper exp2f(x)
|
|
*/
|
|
|
|
#include "fdlibm.h"
|
|
#if __OBSOLETE_MATH
|
|
#include <errno.h>
|
|
#include <math.h>
|
|
|
|
#ifdef __STDC__
|
|
float exp2f(float x) /* wrapper exp2f */
|
|
#else
|
|
float exp2f(x) /* wrapper exp2f */
|
|
float x;
|
|
#endif
|
|
{
|
|
return powf(2.0, x);
|
|
}
|
|
|
|
#ifdef _DOUBLE_IS_32BITS
|
|
|
|
#ifdef __STDC__
|
|
double exp2(double x)
|
|
#else
|
|
double exp2(x)
|
|
double x;
|
|
#endif
|
|
{
|
|
return (double) exp2f((float) x);
|
|
}
|
|
|
|
#endif /* defined(_DOUBLE_IS_32BITS) */
|
|
#endif /* __OBSOLETE_MATH */
|