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/* w_lgammal.c -- long double version of w_lgamma.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.
* ====================================================
*/
/* long double lgammal(long double x)
* Return the logarithm of the Gamma function of x.
*
* Method: call __ieee754_lgammal_r
*/
#include <math.h>
#include <math_private.h>
#include <math-svid-compat.h>
#include <libm-alias-ldouble.h>
#include <lgamma-compat.h>
#if BUILD_LGAMMA
long double
LGFUNC (__lgammal) (long double x)
{
long double y = CALL_LGAMMA (long double, __ieee754_lgammal_r, x);
if(__builtin_expect(!isfinite(y), 0)
&& isfinite(x) && _LIB_VERSION != _IEEE_)
return __kernel_standard_l(x, x,
__floorl(x)==x&&x<=0.0L
? 215 /* lgamma pole */
: 214); /* lgamma overflow */
return y;
}
# if USE_AS_COMPAT
compat_symbol (libm, __lgammal_compat, lgammal, LGAMMA_OLD_VER);
# else
versioned_symbol (libm, __lgammal, lgammal, LGAMMA_NEW_VER);
libm_alias_ldouble_other (__lgamma, lgamma)
# endif
# if GAMMA_ALIAS
strong_alias (LGFUNC (__lgammal), __gammal)
weak_alias (__gammal, gammal)
# endif
#endif
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