1 /* w_gammaf_r.c -- float version of w_gamma_r.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 #include <sys/cdefs.h> 17 #if defined(LIBM_SCCS) && !defined(lint) 18 __RCSID("$NetBSD: w_gammaf_r.c,v 1.7 2001/01/06 00:15:00 christos Exp $"); 19 #endif 20 21 /* 22 * wrapper float gammaf_r(float x, int *signgamp) 23 */ 24 25 #include "math.h" 26 #include "math_private.h" 27 28 #ifdef __STDC__ 29 float gammaf_r(float x, int *signgamp) /* wrapper lgammaf_r */ 30 #else 31 float gammaf_r(x,signgamp) /* wrapper lgammaf_r */ 32 float x; int *signgamp; 33 #endif 34 { 35 #ifdef _IEEE_LIBM 36 return __ieee754_lgammaf_r(x,signgamp); 37 #else 38 float y; 39 y = __ieee754_lgammaf_r(x,signgamp); 40 if(_LIB_VERSION == _IEEE_) return y; 41 if(!finitef(y)&&finitef(x)) { 42 if(floorf(x)==x&&x<=(float)0.0) 43 /* gammaf pole */ 44 return (float)__kernel_standard((double)x,(double)x,141); 45 else 46 /* gamma overflow */ 47 return (float)__kernel_standard((double)x,(double)x,140); 48 } else 49 return y; 50 #endif 51 } 52