1 /* w_lgammal.c -- long double version of w_lgamma.c.
2 * Conversion to long double by Ulrich Drepper,
3 * Cygnus Support, drepper@cygnus.com.
7 * ====================================================
8 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
10 * Developed at SunPro, a Sun Microsystems, Inc. business.
11 * Permission to use, copy, modify, and distribute this
12 * software is freely granted, provided that this notice
14 * ====================================================
17 #if defined(LIBM_SCCS) && !defined(lint)
18 static char rcsid[] = "$NetBSD: $";
21 /* long double lgammal(long double x)
22 * Return the logarithm of the Gamma function of x.
24 * Method: call __ieee754_lgammal_r
28 #include "math_private.h"
31 long double __lgammal(long double x)
33 long double __lgammal(x)
38 return __ieee754_lgammal_r(x,&signgam);
42 y = __ieee754_lgammal_r(x,&local_signgam);
43 if (_LIB_VERSION != _ISOC_)
44 /* ISO C 9x does not define the global variable. */
45 signgam = local_signgam;
46 if(_LIB_VERSION == _IEEE_) return y;
47 if(!__finitel(y)&&__finitel(x)) {
48 if(__floorl(x)==x&&x<=0.0)
49 return __kernel_standard(x,x,215); /* lgamma pole */
51 return __kernel_standard(x,x,214); /* lgamma overflow */
56 weak_alias (__lgammal, lgammal)
57 strong_alias (__lgammal, __gammal)
58 weak_alias (__gammal, gammal)