diff options
Diffstat (limited to 'math/w_lgammaf.c')
| -rw-r--r-- | math/w_lgammaf.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/math/w_lgammaf.c b/math/w_lgammaf.c new file mode 100644 index 0000000..7c3c058 --- /dev/null +++ b/math/w_lgammaf.c @@ -0,0 +1,53 @@ +/* w_lgammaf.c -- float version of w_lgamma.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_lgammaf.c,v 1.3 1995/05/10 20:49:30 jtc Exp $"; +#endif + +#include <math.h> +#include "math_private.h" + +#ifdef __STDC__ + float __lgammaf(float x) +#else + float __lgammaf(x) + float x; +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_lgammaf_r(x,&signgam); +#else + float y; + int local_signgam = 0; + y = __ieee754_lgammaf_r(x,&local_signgam); + if (_LIB_VERSION != _ISOC_) + /* ISO C99 does not define the global variable. */ + signgam = local_signgam; + if(_LIB_VERSION == _IEEE_) return y; + if(!__finitef(y)&&__finitef(x)) { + if(__floorf(x)==x&&x<=(float)0.0) + /* lgamma pole */ + return (float)__kernel_standard((double)x,(double)x,115); + else + /* lgamma overflow */ + return (float)__kernel_standard((double)x,(double)x,114); + } else + return y; +#endif +} +weak_alias (__lgammaf, lgammaf) +strong_alias (__lgammaf, __gammaf) +weak_alias (__gammaf, gammaf) |