1996-03-06 05:41:30 +08:00
|
|
|
/* w_lgammaf.c -- float version of w_lgamma.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
|
1998-04-09 22:14:20 +08:00
|
|
|
* software is freely granted, provided that this notice
|
1996-03-06 05:41:30 +08:00
|
|
|
* is preserved.
|
|
|
|
|
* ====================================================
|
|
|
|
|
*/
|
|
|
|
|
|
2005-12-14 23:06:39 +08:00
|
|
|
#include <math.h>
|
2011-10-08 17:16:04 +08:00
|
|
|
#include <math_private.h>
|
1996-03-06 05:41:30 +08:00
|
|
|
|
2011-10-12 23:27:51 +08:00
|
|
|
float
|
|
|
|
|
__lgammaf(float x)
|
1996-03-06 05:41:30 +08:00
|
|
|
{
|
2002-04-04 13:10:14 +08:00
|
|
|
int local_signgam = 0;
|
2011-10-12 23:27:51 +08:00
|
|
|
float y = __ieee754_lgammaf_r(x,
|
|
|
|
|
_LIB_VERSION != _ISOC_
|
|
|
|
|
/* ISO C99 does not define the
|
|
|
|
|
global variable. */
|
|
|
|
|
? &signgam
|
|
|
|
|
: &local_signgam);
|
2015-06-03 22:36:34 +08:00
|
|
|
if(__builtin_expect(!isfinite(y), 0)
|
|
|
|
|
&& isfinite(x) && _LIB_VERSION != _IEEE_)
|
2011-10-12 23:27:51 +08:00
|
|
|
return __kernel_standard_f(x, x,
|
|
|
|
|
__floorf(x)==x&&x<=0.0f
|
|
|
|
|
? 115 /* lgamma pole */
|
|
|
|
|
: 114); /* lgamma overflow */
|
|
|
|
|
|
|
|
|
|
return y;
|
1998-04-09 22:14:20 +08:00
|
|
|
}
|
1996-03-06 05:41:30 +08:00
|
|
|
weak_alias (__lgammaf, lgammaf)
|
1998-07-29 00:26:04 +08:00
|
|
|
strong_alias (__lgammaf, __gammaf)
|
|
|
|
|
weak_alias (__gammaf, gammaf)
|
