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