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41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
/* w_lgammaf.c -- float version of w_lgamma.c.
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* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@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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#include <math.h>
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#include <math_private.h>
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float
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__lgammaf(float x)
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{
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int local_signgam = 0;
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float y = __ieee754_lgammaf_r(x,
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_LIB_VERSION != _ISOC_
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/* ISO C99 does not define the
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global variable. */
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? &signgam
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: &local_signgam);
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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_f(x, x,
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__floorf(x)==x&&x<=0.0f
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? 115 /* lgamma pole */
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: 114); /* lgamma overflow */
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return y;
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}
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weak_alias (__lgammaf, lgammaf)
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strong_alias (__lgammaf, __gammaf)
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weak_alias (__gammaf, gammaf)
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