glibc/math/w_lgammal_r.c

53 lines
1.4 KiB
C

/* w_lgammal_r.c -- long double version of w_lgamma_r.c.
* Conversion to long double by Ulrich Drepper,
* Cygnus Support, 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.
* ====================================================
*/
#if defined(LIBM_SCCS) && !defined(lint)
static char rcsid[] = "$NetBSD: $";
#endif
/*
* wrapper long double lgammal_r(long double x, int *signgamp)
*/
#include <math.h>
#include "math_private.h"
#ifdef __STDC__
long double __lgammal_r(long double x, int *signgamp)
/* wrapper lgamma_r */
#else
long double __lgammal_r(x,signgamp) /* wrapper lgamma_r */
long double x; int *signgamp;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_lgammal_r(x,signgamp);
#else
long double y;
y = __ieee754_lgammal_r(x,signgamp);
if(_LIB_VERSION == _IEEE_) return y;
if(!__finitel(y)&&__finitel(x)) {
if(__floorl(x)==x&&x<=0.0)
return __kernel_standard(x,x,215); /* lgamma pole */
else
return __kernel_standard(x,x,214); /* lgamma overflow */
} else
return y;
#endif
}
weak_alias (__lgammal_r, lgammal_r)