vx32

Local 9vx git repository for patches.
git clone git://r-36.net/vx32
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w_gammaf.c (1241B)


      1 /* w_gammaf.c -- float version of w_gamma.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
     11  * software is freely granted, provided that this notice
     12  * is preserved.
     13  * ====================================================
     14  */
     15 
     16 #ifndef lint
     17 static char rcsid[] = "$FreeBSD: src/lib/msun/src/w_gammaf.c,v 1.7 2002/05/28 18:15:04 alfred Exp $";
     18 #endif
     19 
     20 #include "math.h"
     21 #include "math_private.h"
     22 
     23 extern int signgam;
     24 
     25 float
     26 gammaf(float x)
     27 {
     28 #ifdef _IEEE_LIBM
     29 	return __ieee754_gammaf_r(x,&signgam);
     30 #else
     31         float y;
     32         y = __ieee754_gammaf_r(x,&signgam);
     33         if(_LIB_VERSION == _IEEE_) return y;
     34         if(!finitef(y)&&finitef(x)) {
     35             if(floorf(x)==x&&x<=(float)0.0)
     36 	        /* gammaf pole */
     37                 return (float)__kernel_standard((double)x,(double)x,141);
     38             else
     39 	        /* gammaf overflow */
     40                 return (float)__kernel_standard((double)x,(double)x,140);
     41         } else
     42             return y;
     43 #endif
     44 }