OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libm/] [math/] [wf_atanh.c] - Blame information for rev 455

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 148 jeremybenn 
/* wf_atanh.c -- float version of w_atanh.c.
2 
 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 
 */
4 
 
5 
/*
6 
 * ====================================================
7 
 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
8 
 *
9 
 * Developed at SunPro, a Sun Microsystems, Inc. business.
10 
 * Permission to use, copy, modify, and distribute this
11 
 * software is freely granted, provided that this notice
12 
 * is preserved.
13 
 * ====================================================
14 
 */
15 
/*
16 
 * wrapper atanhf(x)
17 
 */
18 
 
19 
#include "fdlibm.h"
20 
#include <errno.h>
21 
 
22 
#ifdef __STDC__
23 
        float atanhf(float x)           /* wrapper atanhf */
24 
#else
25 
        float atanhf(x)                 /* wrapper atanhf */
26 
        float x;
27 
#endif
28 
{
29 
#ifdef _IEEE_LIBM
30 
        return __ieee754_atanhf(x);
31 
#else
32 
        float z,y;
33 
        struct exception exc;
34 
        z = __ieee754_atanhf(x);
35 
        if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z;
36 
        y = fabsf(x);
37 
        if(y>=(float)1.0) {
38 
            if(y>(float)1.0) {
39 
                /* atanhf(|x|>1) */
40 
                exc.type = DOMAIN;
41 
                exc.name = "atanhf";
42 
                exc.err = 0;
43 
                exc.arg1 = exc.arg2 = (double)x;
44 
                exc.retval = 0.0/0.0;
45 
                if (_LIB_VERSION == _POSIX_)
46 
                  errno = EDOM;
47 
                else if (!matherr(&exc)) {
48 
                  errno = EDOM;
49 
                }
50 
            } else {
51 
                /* atanhf(|x|=1) */
52 
                exc.type = SING;
53 
                exc.name = "atanhf";
54 
                exc.err = 0;
55 
                exc.arg1 = exc.arg2 = (double)x;
56 
                exc.retval = x/0.0;     /* sign(x)*inf */
57 
                if (_LIB_VERSION == _POSIX_)
58 
                  errno = EDOM;
59 
                else if (!matherr(&exc)) {
60 
                  errno = EDOM;
61 
                }
62 
            }
63 
            if (exc.err != 0)
64 
              errno = exc.err;
65 
            return (float)exc.retval;
66 
        } else
67 
            return z;
68 
#endif
69 
}
70 
 
71 
#ifdef _DOUBLE_IS_32BITS
72 
 
73 
#ifdef __STDC__
74 
        double atanh(double x)
75 
#else
76 
        double atanh(x)
77 
        double x;
78 
#endif
79 
{
80 
        return (double) atanhf((float) x);
81 
}
82 
 
83 
#endif /* defined(_DOUBLE_IS_32BITS) */

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.