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      1 /* @(#)wr_gamma.c 5.1 93/09/24 */
      2 /*
      3  * ====================================================
      4  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
      5  *
      6  * Developed at SunPro, a Sun Microsystems, Inc. business.
      7  * Permission to use, copy, modify, and distribute this
      8  * software is freely granted, provided that this notice
      9  * is preserved.
     10  * ====================================================
     11  */
     12 
     13 #include <sys/cdefs.h>
     14 #if defined(LIBM_SCCS) && !defined(lint)
     15 __RCSID("$NetBSD: w_gamma_r.c,v 1.11 2002/05/26 22:02:00 wiz Exp $");
     16 #endif
     17 
     18 /*
     19  * wrapper double gamma_r(double x, int *signgamp)
     20  */
     21 
     22 #include "math.h"
     23 #include "math_private.h"
     24 
     25 double
     26 gamma_r(double x, int *signgamp) /* wrapper lgamma_r */
     27 {
     28 #ifdef _IEEE_LIBM
     29 	return __ieee754_lgamma_r(x,signgamp);
     30 #else
     31         double y;
     32         y = __ieee754_lgamma_r(x,signgamp);
     33         if(_LIB_VERSION == _IEEE_) return y;
     34         if(!finite(y)&&finite(x)) {
     35             if(floor(x)==x&&x<=0.0)
     36                 return __kernel_standard(x,x,41); /* gamma pole */
     37             else
     38                 return __kernel_standard(x,x,40); /* gamma overflow */
     39         } else
     40             return y;
     41 #endif
     42 }
     43