Commit | Line | Data |
---|---|---|
4acf9396 GCI |
1 | /* @(#)w_gamma_r.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 | #ifndef lint | |
14 | static char rcsid[] = "$Id: w_gamma_r.c,v 1.3 1994/02/18 02:27:30 jtc Exp $"; | |
15 | #endif | |
16 | ||
17 | /* | |
18 | * wrapper double gamma_r(double x, int *signgamp) | |
19 | */ | |
20 | ||
21 | #include "math.h" | |
22 | ||
23 | ||
24 | #ifdef __STDC__ | |
25 | double gamma_r(double x, int *signgamp) /* wrapper lgamma_r */ | |
26 | #else | |
27 | double gamma_r(x,signgamp) /* wrapper lgamma_r */ | |
28 | double x; int *signgamp; | |
29 | #endif | |
30 | { | |
31 | #ifdef _IEEE_LIBM | |
32 | return __ieee754_gamma_r(x,signgamp); | |
33 | #else | |
34 | double y; | |
35 | y = __ieee754_gamma_r(x,signgamp); | |
36 | if(_LIB_VERSION == _IEEE_) return y; | |
37 | if(!finite(y)&&finite(x)) { | |
38 | if(floor(x)==x&&x<=0.0) | |
39 | return __kernel_standard(x,x,41); /* gamma pole */ | |
40 | else | |
41 | return __kernel_standard(x,x,40); /* gamma overflow */ | |
42 | } else | |
43 | return y; | |
44 | #endif | |
45 | } |