w_gammaf.c - vx32 - Local 9vx git repository for patches.
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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 }