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      1 /* w_gammaf.c -- float version of w_gamma.c.
      2  * Conversion to float by Ian Lance Taylor, Cygnus Support, ian (at) 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
     11  * software is freely granted, provided that this notice
     12  * is preserved.
     13  * ====================================================
     14  */
     15 
     16 #include <sys/cdefs.h>
     17 #if defined(LIBM_SCCS) && !defined(lint)
     18 __RCSID("$NetBSD: w_gammaf.c,v 1.8 2002/05/26 22:02:01 wiz Exp $");
     19 #endif
     20 
     21 #include "math.h"
     22 #include "math_private.h"
     23 
     24 float
     25 gammaf(float x)
     26 {
     27 #ifdef _IEEE_LIBM
     28 	return __ieee754_lgammaf_r(x,&signgam);
     29 #else
     30         float y;
     31         y = __ieee754_lgammaf_r(x,&signgam);
     32         if(_LIB_VERSION == _IEEE_) return y;
     33         if(!finitef(y)&&finitef(x)) {
     34             if(floorf(x)==x&&x<=(float)0.0)
     35 	        /* gammaf pole */
     36                 return (float)__kernel_standard((double)x,(double)x,141);
     37             else
     38 	        /* gammaf overflow */
     39                 return (float)__kernel_standard((double)x,(double)x,140);
     40         } else
     41             return y;
     42 #endif
     43 }
     44