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/* w_gammal.c -- long double version of w_gamma.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
/* long double gammal(double x)
* Return the Gamma function of x.
*/
#include "math.h"
#include "math_private.h"
#ifdef __STDC__
long double __gammal(long double x)
#else
long double __gammal(x)
long double x;
#endif
{
long double y;
#ifndef _IEEE_LIBM
if (_LIB_VERSION == _SVID_)
{
y = __ieee754_lgammal_r(x,&signgam);
if(!__finitel(y)&&__finitel(x)) {
if(__floorl(x)==x&&x<=(long double)0.0)
/* lgamma pole */
return (long double)__kernel_standard((double)x,(double)x,15);
else
/* lgamma overflow */
return (long double)__kernel_standard((double)x,(double)x,14);
}
}
else
{
#endif
int local_signgam;
y = __ieee754_gammal_r(x,&local_signgam);
if (local_signgam < 0) y = -y;
#ifdef _IEEE_LIBM
return y;
#else
if(_LIB_VERSION == _IEEE_) return y;
if(!__finitel(y)&&__finitel(x)) {
if(__floorl(x)==x&&x<=0.0)
return __kernel_standard(x,x,241); /* gamma pole */
else
return __kernel_standard(x,x,240); /* gamma overflow */
}
}
return y;
#endif
}
weak_alias (__gammal, gammal)
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