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 #if defined(LIBM_SCCS) && !defined(lint) 14 static char rcsid[] = "$NetBSD: w_gamma_r.c,v 1.7 1995/11/20 22:06:45 jtc Exp $"; 15 #endif 16 17 /* 18 * wrapper double gamma_r(double x, int *signgamp) 19 */ 20 21 #include "math.h" 22 #include "math_private.h" 23 24 25 #ifdef __STDC__ 26 double gamma_r(double x, int *signgamp) /* wrapper lgamma_r */ 27 #else 28 double gamma_r(x,signgamp) /* wrapper lgamma_r */ 29 double x; int *signgamp; 30 #endif 31 { 32 #ifdef _IEEE_LIBM 33 return __ieee754_lgamma_r(x,signgamp); 34 #else 35 double y; 36 y = __ieee754_lgamma_r(x,signgamp); 37 if(_LIB_VERSION == _IEEE_) return y; 38 if(!finite(y)&&finite(x)) { 39 if(floor(x)==x&&x<=0.0) 40 return __kernel_standard(x,x,41); /* gamma pole */ 41 else 42 return __kernel_standard(x,x,40); /* gamma overflow */ 43 } else 44 return y; 45 #endif 46 } 47