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d709042a | 1 | /* w_lgammal.c -- long double version of w_lgamma.c. |
d709042a JM |
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 | /* long double lgammal(long double x) | |
16 | * Return the logarithm of the Gamma function of x. | |
17 | * | |
18 | * Method: call __ieee754_lgammal_r | |
19 | */ | |
20 | ||
21 | #include <math.h> | |
22 | #include <math_private.h> | |
813378e9 | 23 | #include <math-svid-compat.h> |
24b6515d | 24 | #include <libm-alias-ldouble.h> |
d709042a JM |
25 | |
26 | #include <lgamma-compat.h> | |
27 | ||
28 | #if BUILD_LGAMMA | |
29 | long double | |
30 | LGFUNC (__lgammal) (long double x) | |
31 | { | |
32 | long double y = CALL_LGAMMA (long double, __ieee754_lgammal_r, x); | |
33 | if(__builtin_expect(!isfinite(y), 0) | |
34 | && isfinite(x) && _LIB_VERSION != _IEEE_) | |
35 | return __kernel_standard_l(x, x, | |
e44acb20 | 36 | floorl(x)==x&&x<=0.0L |
d709042a JM |
37 | ? 215 /* lgamma pole */ |
38 | : 214); /* lgamma overflow */ | |
39 | ||
40 | return y; | |
41 | } | |
42 | # if USE_AS_COMPAT | |
43 | compat_symbol (libm, __lgammal_compat, lgammal, LGAMMA_OLD_VER); | |
44 | # else | |
45 | versioned_symbol (libm, __lgammal, lgammal, LGAMMA_NEW_VER); | |
24b6515d | 46 | libm_alias_ldouble_other (__lgamma, lgamma) |
d709042a JM |
47 | # endif |
48 | # if GAMMA_ALIAS | |
49 | strong_alias (LGFUNC (__lgammal), __gammal) | |
50 | weak_alias (__gammal, gammal) | |
51 | # endif | |
52 | #endif |