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1 | /* @(#)wr_gamma.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 | |
cccda09f | 8 | * software is freely granted, provided that this notice |
f7eac6eb RM |
9 | * is preserved. |
10 | * ==================================================== | |
11 | */ | |
12 | ||
13 | #if defined(LIBM_SCCS) && !defined(lint) | |
14 | static char rcsid[] = "$NetBSD: w_gamma_r.c,v 1.7 1995/11/20 22:06:45 jtc Exp $"; | |
15 | #endif | |
16 | ||
cccda09f | 17 | /* |
f7eac6eb RM |
18 | * wrapper double gamma_r(double x, int *signgamp) |
19 | */ | |
20 | ||
21 | #include "math.h" | |
22 | #include "math_private.h" | |
23 | ||
24 | ||
25 | #ifdef __STDC__ | |
26 | double __gamma_r(double x, int *signgamp) /* wrapper lgamma_r */ | |
27 | #else | |
28 | double __gamma_r(x,signgamp) /* wrapper lgamma_r */ | |
29 | double x; int *signgamp; | |
30 | #endif | |
31 | { | |
32 | #ifdef _IEEE_LIBM | |
33 | return __ieee754_lgamma_r(x,signgamp); | |
34 | #else | |
35 | double y; | |
36 | y = __ieee754_lgamma_r(x,signgamp); | |
37 | if(_LIB_VERSION == _IEEE_) return y; | |
38 | if(!__finite(y)&&__finite(x)) { | |
39 | if(__floor(x)==x&&x<=0.0) | |
40 | return __kernel_standard(x,x,41); /* gamma pole */ | |
41 | else | |
42 | return __kernel_standard(x,x,40); /* gamma overflow */ | |
43 | } else | |
44 | return y; | |
45 | #endif | |
cccda09f | 46 | } |
f7eac6eb | 47 | weak_alias (__gamma_r, gamma_r) |
cccda09f UD |
48 | #ifdef NO_LONG_DOUBLE |
49 | strong_alias (__gamma_r, __gammal_r) | |
50 | weak_alias (__gamma_r, gammal_r) | |
51 | #endif |