glibc/sysdeps/generic/w_exp10f.c
Ulrich Drepper e275093526 Update.
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2001-02-17 01:47:54 +00:00

58 lines
1.3 KiB
C

/* w_exp10f.c -- float version of w_exp10.c.
* Conversion to exp10 by Ulrich Drepper <drepper@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 expf10(x)
*/
#include "math.h"
#include "math_private.h"
#ifdef __STDC__
static const float
#else
static float
#endif
o_threshold= 3.853183944498959298709e+01,
u_threshold= -4.515449934959717928174e+01;
#ifdef __STDC__
float __exp10f(float x) /* wrapper exp10f */
#else
float __exp10f(x) /* wrapper exp10f */
float x;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_exp10f(x);
#else
float z;
z = __ieee754_exp10f(x);
if(_LIB_VERSION == _IEEE_) return z;
if(__finitef(x)) {
if(x>o_threshold)
/* exp overflow */
return (float)__kernel_standard((double)x,(double)x,146);
else if(x<u_threshold)
/* exp underflow */
return (float)__kernel_standard((double)x,(double)x,147);
}
return z;
#endif
}
weak_alias (__exp10f, exp10f)
strong_alias (__exp10f, __pow10f)
weak_alias (__pow10f, pow10f)