0,0 → 1,52 |
/* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */ |
/* w_lgammaf_r.c -- float version of w_lgamma_r.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. |
* ==================================================== |
*/ |
|
#if defined(LIBM_SCCS) && !defined(lint) |
static char rcsid[] = "$Id: w_lgammaf_r.c,v 1.1 1994/08/10 20:35:05 jtc Exp $"; |
#endif |
|
/* |
* wrapper float lgammaf_r(float x, int *signgamp) |
*/ |
|
#include "math.h" |
#include "math_private.h" |
|
|
#ifdef __STDC__ |
float lgammaf_r(float x, int *signgamp) /* wrapper lgammaf_r */ |
#else |
float lgammaf_r(x,signgamp) /* wrapper lgammaf_r */ |
float x; int *signgamp; |
#endif |
{ |
#ifdef _IEEE_LIBM |
return __ieee754_lgammaf_r(x,signgamp); |
#else |
float y; |
y = __ieee754_lgammaf_r(x,signgamp); |
if(_LIB_VERSION == _IEEE_) return y; |
if(!finitef(y)&&finitef(x)) { |
if(floorf(x)==x&&x<=(float)0.0) |
/* lgamma pole */ |
return (float)__kernel_standard((double)x,(double)x,115); |
else |
/* lgamma overflow */ |
return (float)__kernel_standard((double)x,(double)x,114); |
} else |
return y; |
#endif |
} |