Readd ypresp_allfn, now correctly typed.
[dragonfly.git] / lib / msun / src / w_ynf.c
1 /* w_ynf.c -- float version of w_yn.c.
2  * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3  *
4  * $FreeBSD: src/lib/msun/src/w_ynf.c,v 1.3 1999/08/28 00:07:11 peter Exp $
5  * $DragonFly: src/lib/msun/src/Attic/w_ynf.c,v 1.3 2004/12/29 15:22:57 asmodai Exp $
6  */
7
8 /*
9  * ====================================================
10  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
11  *
12  * Developed at SunPro, a Sun Microsystems, Inc. business.
13  * Permission to use, copy, modify, and distribute this
14  * software is freely granted, provided that this notice
15  * is preserved.
16  * ====================================================
17  */
18
19 #include "math.h"
20 #include "math_private.h"
21
22 float
23 ynf(int n, float x)     /* wrapper ynf */
24 {
25 #ifdef _IEEE_LIBM
26         return __ieee754_ynf(n,x);
27 #else
28         float z;
29         z = __ieee754_ynf(n,x);
30         if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z;
31         if(x <= (float)0.0){
32                 if(x==(float)0.0)
33                     /* d= -one/(x-x); */
34                     return (float)__kernel_standard((double)n,(double)x,112);
35                 else
36                     /* d = zero/(x-x); */
37                     return (float)__kernel_standard((double)n,(double)x,113);
38         }
39         if(x>(float)X_TLOSS) {
40             /* yn(x>X_TLOSS,n) */
41             return (float)__kernel_standard((double)n,(double)x,139);
42         } else
43             return z;
44 #endif
45 }