52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/* w_lgammal.c -- long double version of w_lgamma.c.
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* Conversion to long double by Ulrich Drepper,
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* Cygnus Support, drepper@cygnus.com.
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*/
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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/* long double lgammal(long double x)
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* Return the logarithm of the Gamma function of x.
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*
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* Method: call __ieee754_lgammal_r
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*/
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#include <math.h>
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#include <math_private.h>
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#include <lgamma-compat.h>
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#if BUILD_LGAMMA
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long double
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LGFUNC (__lgammal) (long double x)
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{
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long double y = CALL_LGAMMA (long double, __ieee754_lgammal_r, x);
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if(__builtin_expect(!isfinite(y), 0)
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&& isfinite(x) && _LIB_VERSION != _IEEE_)
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return __kernel_standard_l(x, x,
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__floorl(x)==x&&x<=0.0L
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? 215 /* lgamma pole */
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: 214); /* lgamma overflow */
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return y;
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}
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# if USE_AS_COMPAT
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compat_symbol (libm, __lgammal_compat, lgammal, LGAMMA_OLD_VER);
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# else
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versioned_symbol (libm, __lgammal, lgammal, LGAMMA_NEW_VER);
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# endif
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# if GAMMA_ALIAS
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strong_alias (LGFUNC (__lgammal), __gammal)
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weak_alias (__gammal, gammal)
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# endif
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#endif
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