projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f7eac6eb RM |
1 | /* w_lgammaf.c -- float version of w_lgamma.c. |
| 2 | * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. | |
| 3 | */ | |
| 4 | ||
| 5 | /* | |
| 6 | * ==================================================== | |
| 7 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. | |
| 8 | * | |
| 9 | * Developed at SunPro, a Sun Microsystems, Inc. business. | |
| 10 | * Permission to use, copy, modify, and distribute this | |
| 356d7100 | 11 | * software is freely granted, provided that this notice |
| f7eac6eb RM |
12 | * is preserved. |
| 13 | * ==================================================== | |
| 14 | */ | |
| 15 | ||
| 9d13fb24 | 16 | #include <math.h> |
| 9277c064 | 17 | #include <math_private.h> |
| f7eac6eb | 18 | |
| 0ac5ae23 UD |
19 | float |
| 20 | __lgammaf(float x) | |
| f7eac6eb | 21 | { |
| 4a10c7fe | 22 | int local_signgam = 0; |
| 0ac5ae23 UD |
23 | float y = __ieee754_lgammaf_r(x, |
| 24 | _LIB_VERSION != _ISOC_ | |
| 25 | /* ISO C99 does not define the | |
| 26 | global variable. */ | |
| 27 | ? &signgam | |
| 28 | : &local_signgam); | |
| d81f90cc WD |
29 | if(__builtin_expect(!isfinite(y), 0) |
| 30 | && isfinite(x) && _LIB_VERSION != _IEEE_) | |
| 0ac5ae23 UD |
31 | return __kernel_standard_f(x, x, |
| 32 | __floorf(x)==x&&x<=0.0f | |
| 33 | ? 115 /* lgamma pole */ | |
| 34 | : 114); /* lgamma overflow */ | |
| 35 | ||
| 36 | return y; | |
| 356d7100 | 37 | } |
| f7eac6eb | 38 | weak_alias (__lgammaf, lgammaf) |
| e852e889 UD |
39 | strong_alias (__lgammaf, __gammaf) |
| 40 | weak_alias (__gammaf, gammaf) |