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
70
|
/* @(#)w_jn.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.
* ====================================================
*/
#ifndef lint
static char rcsid[] = "$FreeBSD$";
#endif
/*
* wrapper jn(int n, double x), yn(int n, double x)
*/
#include "math.h"
#include "math_private.h"
#ifdef __STDC__
double jn(int n, double x) /* wrapper jn */
#else
double jn(n,x) /* wrapper jn */
double x; int n;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_jn(n,x);
#else
double z;
z = __ieee754_jn(n,x);
if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z;
if(fabs(x)>X_TLOSS) {
return __kernel_standard((double)n,x,38); /* jn(|x|>X_TLOSS,n) */
} else
return z;
#endif
}
#ifdef __STDC__
double yn(int n, double x) /* wrapper yn */
#else
double yn(n,x) /* wrapper yn */
double x; int n;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_yn(n,x);
#else
double z;
z = __ieee754_yn(n,x);
if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z;
if(x <= 0.0){
if(x==0.0)
/* d= -one/(x-x); */
return __kernel_standard((double)n,x,12);
else
/* d = zero/(x-x); */
return __kernel_standard((double)n,x,13);
}
if(x>X_TLOSS) {
return __kernel_standard((double)n,x,39); /* yn(x>X_TLOSS,n) */
} else
return z;
#endif
}
|