1 | /* w_lgammaf.c -- float version of w_lgamma.c. |
2 | */ |
3 | |
4 | /* |
5 | * ==================================================== |
6 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
7 | * |
8 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
9 | * Permission to use, copy, modify, and distribute this |
10 | * software is freely granted, provided that this notice |
11 | * is preserved. |
12 | * ==================================================== |
13 | */ |
14 | |
15 | #include <math.h> |
16 | #include <math_private.h> |
17 | #include <math-svid-compat.h> |
18 | #include <libm-alias-float.h> |
19 | |
20 | #include <lgamma-compat.h> |
21 | |
22 | #if BUILD_LGAMMA |
23 | float |
24 | LGFUNC (__lgammaf) (float x) |
25 | { |
26 | float y = CALL_LGAMMA (float, __ieee754_lgammaf_r, x); |
27 | if(__builtin_expect(!isfinite(y), 0) |
28 | && isfinite(x) && _LIB_VERSION != _IEEE_) |
29 | return __kernel_standard_f(x, x, |
30 | floorf(x)==x&&x<=0.0f |
31 | ? 115 /* lgamma pole */ |
32 | : 114); /* lgamma overflow */ |
33 | |
34 | return y; |
35 | } |
36 | # if USE_AS_COMPAT |
37 | compat_symbol (libm, __lgammaf_compat, lgammaf, LGAMMA_OLD_VER); |
38 | # else |
39 | versioned_symbol (libm, __lgammaf, lgammaf, LGAMMA_NEW_VER); |
40 | libm_alias_float_other (__lgamma, lgamma) |
41 | # endif |
42 | # if GAMMA_ALIAS |
43 | strong_alias (LGFUNC (__lgammaf), __gammaf) |
44 | weak_alias (__gammaf, gammaf) |
45 | # endif |
46 | #endif |
47 | |