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 double 25 gamma_r(double x, int *signgamp) /* wrapper lgamma_r */ 26 { 27 #ifdef _IEEE_LIBM 28 return __ieee754_lgamma_r(x,signgamp); 29 #else 30 double y; 31 y = __ieee754_lgamma_r(x,signgamp); 32 if(_LIB_VERSION == _IEEE_) return y; 33 if(!finite(y)&&finite(x)) { 34 if(floor(x)==x&&x<=0.0) 35 return __kernel_standard(x,x,41); /* gamma pole */ 36 else 37 return __kernel_standard(x,x,40); /* gamma overflow */ 38 } else 39 return y; 40 #endif 41 } 42