diff options
Diffstat (limited to 'math/w_tgammaf.c')
| -rw-r--r-- | math/w_tgammaf.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/math/w_tgammaf.c b/math/w_tgammaf.c new file mode 100644 index 0000000000..152f4be156 --- /dev/null +++ b/math/w_tgammaf.c @@ -0,0 +1,50 @@ +/* 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. + * ==================================================== + */ + +#if defined(LIBM_SCCS) && !defined(lint) +static char rcsid[] = "$NetBSD: w_gammaf.c,v 1.4 1995/11/20 22:06:48 jtc Exp $"; +#endif + +#include "math.h" +#include "math_private.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 +} +weak_alias (__tgammaf, tgammaf) |