1
2/* @(#)w_j0.c 1.3 95/01/18 */
3/*
4 * ====================================================
5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
6 *
7 * Developed at SunSoft, a Sun Microsystems, Inc. business.
8 * Permission to use, copy, modify, and distribute this
9 * software is freely granted, provided that this notice
10 * is preserved.
11 * ====================================================
12 */
13
14/*
15 * wrapper ieee_j0(double x), ieee_y0(double x)
16 */
17
18#include "fdlibm.h"
19
20#ifdef __STDC__
21	double ieee_j0(double x)		/* wrapper j0 */
22#else
23	double ieee_j0(x)			/* wrapper j0 */
24	double x;
25#endif
26{
27#ifdef _IEEE_LIBM
28	return __ieee754_j0(x);
29#else
30	double z = __ieee754_j0(x);
31	if(_LIB_VERSION == _IEEE_ || ieee_isnan(x)) return z;
32	if(ieee_fabs(x)>X_TLOSS) {
33	        return __kernel_standard(x,x,34); /* ieee_j0(|x|>X_TLOSS) */
34	} else
35	    return z;
36#endif
37}
38
39#ifdef __STDC__
40	double ieee_y0(double x)		/* wrapper y0 */
41#else
42	double ieee_y0(x)			/* wrapper y0 */
43	double x;
44#endif
45{
46#ifdef _IEEE_LIBM
47	return __ieee754_y0(x);
48#else
49	double z;
50	z = __ieee754_y0(x);
51	if(_LIB_VERSION == _IEEE_ || ieee_isnan(x) ) return z;
52        if(x <= 0.0){
53                if(x==0.0)
54                    /* d= -one/(x-x); */
55                    return __kernel_standard(x,x,8);
56                else
57                    /* d = zero/(x-x); */
58                    return __kernel_standard(x,x,9);
59        }
60	if(x>X_TLOSS) {
61	        return __kernel_standard(x,x,35); /* ieee_y0(x>X_TLOSS) */
62	} else
63	    return z;
64#endif
65}
66