projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| d709042a JM |
1 | /* w_lgammal.c -- long double version of w_lgamma.c. |
| 2 | * Conversion to long double by Ulrich Drepper, | |
| 3 | * Cygnus Support, drepper@cygnus.com. | |
| 4 | */ | |
| 5 | ||
| 6 | /* | |
| 7 | * ==================================================== | |
| 8 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. | |
| 9 | * | |
| 10 | * Developed at SunPro, a Sun Microsystems, Inc. business. | |
| 11 | * Permission to use, copy, modify, and distribute this | |
| 12 | * software is freely granted, provided that this notice | |
| 13 | * is preserved. | |
| 14 | * ==================================================== | |
| 15 | */ | |
| 16 | ||
| 17 | /* long double lgammal(long double x) | |
| 18 | * Return the logarithm of the Gamma function of x. | |
| 19 | * | |
| 20 | * Method: call __ieee754_lgammal_r | |
| 21 | */ | |
| 22 | ||
| 23 | #include <math.h> | |
| 24 | #include <math_private.h> | |
| 813378e9 | 25 | #include <math-svid-compat.h> |
| 24b6515d | 26 | #include <libm-alias-ldouble.h> |
| d709042a JM |
27 | |
| 28 | #include <lgamma-compat.h> | |
| 29 | ||
| 30 | #if BUILD_LGAMMA | |
| 31 | long double | |
| 32 | LGFUNC (__lgammal) (long double x) | |
| 33 | { | |
| 34 | long double y = CALL_LGAMMA (long double, __ieee754_lgammal_r, x); | |
| 35 | if(__builtin_expect(!isfinite(y), 0) | |
| 36 | && isfinite(x) && _LIB_VERSION != _IEEE_) | |
| 37 | return __kernel_standard_l(x, x, | |
| e44acb20 | 38 | floorl(x)==x&&x<=0.0L |
| d709042a JM |
39 | ? 215 /* lgamma pole */ |
| 40 | : 214); /* lgamma overflow */ | |
| 41 | ||
| 42 | return y; | |
| 43 | } | |
| 44 | # if USE_AS_COMPAT | |
| 45 | compat_symbol (libm, __lgammal_compat, lgammal, LGAMMA_OLD_VER); | |
| 46 | # else | |
| 47 | versioned_symbol (libm, __lgammal, lgammal, LGAMMA_NEW_VER); | |
| 24b6515d | 48 | libm_alias_ldouble_other (__lgamma, lgamma) |
| d709042a JM |
49 | # endif |
| 50 | # if GAMMA_ALIAS | |
| 51 | strong_alias (LGFUNC (__lgammal), __gammal) | |
| 52 | weak_alias (__gammal, gammal) | |
| 53 | # endif | |
| 54 | #endif |