1/* @(#)wr_lgamma.c 5.1 93/09/24 */
2/*
3 * ====================================================
4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
5 *
6 * Developed at SunPro, a Sun Microsystems, Inc. business.
7 * Permission to use, copy, modify, and distribute this
8 * software is freely granted, provided that this notice
9 * is preserved.
10 * ====================================================
11 */
12
13/*
14 * wrapper double lgamma_r(double x, int *signgamp)
15 */
16
17#include <math.h>
18#include <math_private.h>
19#include <math-svid-compat.h>
20#include <libm-alias-double.h>
21
22
23#if LIBM_SVID_COMPAT
24double
25__lgamma_r(double x, int *signgamp)
26{
27 double y = __ieee754_lgamma_r(x,signgamp);
28 if(__builtin_expect(!isfinite(y), 0)
29 && isfinite(x) && _LIB_VERSION != _IEEE_)
30 return __kernel_standard(x, x,
31 floor(x)==x&&x<=0.0
32 ? 15 /* lgamma pole */
33 : 14); /* lgamma overflow */
34
35 return y;
36}
37libm_alias_double_r (__lgamma, lgamma, _r)
38#endif
39