projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| e852e889 UD |
1 | /* w_gammal.c -- long double version of w_gamma.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 | #if defined(LIBM_SCCS) && !defined(lint) | |
| 18 | static char rcsid[] = "$NetBSD: $"; | |
| 19 | #endif | |
| 20 | ||
| 21 | /* long double gammal(double x) | |
| 22 | * Return the Gamma function of x. | |
| 23 | */ | |
| 24 | ||
| 9d13fb24 | 25 | #include <math.h> |
| 9277c064 | 26 | #include <math_private.h> |
| e852e889 UD |
27 | |
| 28 | #ifdef __STDC__ | |
| 29 | long double __tgammal(long double x) | |
| 30 | #else | |
| 31 | long double __tgammal(x) | |
| 32 | long double x; | |
| 33 | #endif | |
| 34 | { | |
| 35 | long double y; | |
| 36 | int local_signgam; | |
| 37 | y = __ieee754_gammal_r(x,&local_signgam); | |
| 38 | if (local_signgam < 0) y = -y; | |
| 39 | #ifdef _IEEE_LIBM | |
| 40 | return y; | |
| 41 | #else | |
| 42 | if(_LIB_VERSION == _IEEE_) return y; | |
| 43 | ||
| 44 | if(!__finitel(y)&&__finitel(x)) { | |
| 52495f29 UD |
45 | if(x==0.0) |
| 46 | return __kernel_standard(x,x,250); /* tgamma pole */ | |
| 47 | else if(__floorl(x)==x&&x<0.0) | |
| 48 | return __kernel_standard(x,x,241); /* tgamma domain */ | |
| e852e889 UD |
49 | else |
| 50 | return __kernel_standard(x,x,240); /* tgamma overflow */ | |
| 51 | } | |
| 52 | return y; | |
| 53 | #endif | |
| 54 | } | |
| 55 | weak_alias (__tgammal, tgammal) |