summaryrefslogtreecommitdiff
path: root/libm/w_j0.c
blob: 61f4f20fc5b0fe6d96ed74de6580c2bbd0e39434 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
/* @(#)w_j0.c 5.1 93/09/24 */
/*
 * ====================================================
 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
 *
 * Developed at SunPro, a Sun Microsystems, Inc. business.
 * Permission to use, copy, modify, and distribute this
 * software is freely granted, provided that this notice
 * is preserved.
 * ====================================================
 */

#if defined(LIBM_SCCS) && !defined(lint)
static char rcsid[] = "$NetBSD: w_j0.c,v 1.6 1995/05/10 20:49:11 jtc Exp $";
#endif

/*
 * wrapper j0(double x), y0(double x)
 */

#include "math.h"
#include "math_private.h"

#ifdef __STDC__
	double j0(double x)		/* wrapper j0 */
#else
	double j0(x)			/* wrapper j0 */
	double x;
#endif
{
#ifdef _IEEE_LIBM
	return __ieee754_j0(x);
#else
	double z = __ieee754_j0(x);
	if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
	if(fabs(x)>X_TLOSS) {
	        return __kernel_standard(x,x,34); /* j0(|x|>X_TLOSS) */
	} else
	    return z;
#endif
}

#ifdef __STDC__
	double y0(double x)		/* wrapper y0 */
#else
	double y0(x)			/* wrapper y0 */
	double x;
#endif
{
#ifdef _IEEE_LIBM
	return __ieee754_y0(x);
#else
	double z;
	z = __ieee754_y0(x);
	if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z;
        if(x <= 0.0){
                if(x==0.0)
                    /* d= -one/(x-x); */
                    return __kernel_standard(x,x,8);
                else
                    /* d = zero/(x-x); */
                    return __kernel_standard(x,x,9);
        }
	if(x>X_TLOSS) {
	        return __kernel_standard(x,x,35); /* y0(x>X_TLOSS) */
	} else
	    return z;
#endif
}