1/* @(#)w_j0.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_j0.c,v 1.8 1999/07/02 15:37:44 simonb Exp $"); 16#endif 17 18/* 19 * wrapper j0(double x), y0(double x) 20 */ 21 22#include "math.h" 23#include "math_private.h" 24 25double 26j0(double x) /* wrapper j0 */ 27{ 28#ifdef _IEEE_LIBM 29 return __ieee754_j0(x); 30#else 31 double z = __ieee754_j0(x); 32 if(_LIB_VERSION == _IEEE_ || isnan(x)) return z; 33 if(fabs(x)>X_TLOSS) { 34 return __kernel_standard(x,x,34); /* j0(|x|>X_TLOSS) */ 35 } else 36 return z; 37#endif 38} 39 40double 41y0(double x) /* wrapper y0 */ 42{ 43#ifdef _IEEE_LIBM 44 return __ieee754_y0(x); 45#else 46 double z; 47 z = __ieee754_y0(x); 48 if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; 49 if(x <= 0.0){ 50 if(x==0.0) 51 /* d= -one/(x-x); */ 52 return __kernel_standard(x,x,8); 53 else 54 /* d = zero/(x-x); */ 55 return __kernel_standard(x,x,9); 56 } 57 if(x>X_TLOSS) { 58 return __kernel_standard(x,x,35); /* y0(x>X_TLOSS) */ 59 } else 60 return z; 61#endif 62} 63