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 |
24 | double |
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 | } |
37 | libm_alias_double_r (__lgamma, lgamma, _r) |
38 | #endif |
39 | |