| 0,0 → 1,59 |
|---|
| /* w_gammaf.c -- float version of w_gamma.c. |
| * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. |
| */ |
| |
| /* |
| * ==================================================== |
| * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
| * |
| * Developed at SunPro, a Sun Microsystems, Inc. business. |
| * Permission to use, copy, modify, and distribute this |
| * software is freely granted, provided that this notice |
| * is preserved. |
| * ==================================================== |
| */ |
| |
| #include "math.h" |
| #include "fdlibm.h" |
| |
| #ifdef __STDC__ |
| float tgammaf(float x) |
| #else |
| float tgammaf(x) |
| float x; |
| #endif |
| { |
| float y; |
| int local_signgam; |
| y = __ieee754_gammaf_r(x,&local_signgam); |
| if (local_signgam < 0) y = -y; |
| #ifdef _IEEE_LIBM |
| return y; |
| #else |
| if(_LIB_VERSION == _IEEE_) return y; |
| |
| if(!finitef(y)&&finitef(x)) { |
| if(floorf(x)==x&&x<=(float)0.0) |
| /* tgammaf pole */ |
| return (float)__kernel_standard((double)x,(double)x,141); |
| else |
| /* tgammaf overflow */ |
| return (float)__kernel_standard((double)x,(double)x,140); |
| } |
| return y; |
| #endif |
| } |
| |
| #ifdef _DOUBLE_IS_32BITS |
| |
| #ifdef __STDC__ |
| double tgamma(double x) |
| #else |
| double tgamma(x) |
| double x; |
| #endif |
| { |
| return (double) tgammaf((float) x); |
| } |
| |
| #endif /* defined(_DOUBLE_IS_32BITS) */ |