1 /* $NetBSD: setovfl.c,v 1.7 2012/02/04 17:03:10 skrll Exp $ */
2
3 /* $OpenBSD: setovfl.c,v 1.4 2001/03/29 03:58:19 mickey Exp $ */
4
5 /*
6 * Copyright 1996 1995 by Open Software Foundation, Inc.
7 * All Rights Reserved
8 *
9 * Permission to use, copy, modify, and distribute this software and
10 * its documentation for any purpose and without fee is hereby granted,
11 * provided that the above copyright notice appears in all copies and
12 * that both the copyright notice and this permission notice appear in
13 * supporting documentation.
14 *
15 * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
16 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
17 * FOR A PARTICULAR PURPOSE.
18 *
19 * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
20 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
21 * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
22 * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
23 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 *
25 */
26 /*
27 * pmk1.1
28 */
29 /*
30 * (c) Copyright 1986 HEWLETT-PACKARD COMPANY
31 *
32 * To anyone who acknowledges that this file is provided "AS IS"
33 * without any express or implied warranty:
34 * permission to use, copy, modify, and distribute this file
35 * for any purpose is hereby granted without fee, provided that
36 * the above copyright notice and this notice appears in all
37 * copies, and that the name of Hewlett-Packard Company not be
38 * used in advertising or publicity pertaining to distribution
39 * of the software without specific, written prior permission.
40 * Hewlett-Packard Company makes no representations about the
41 * suitability of this software for any purpose.
42 */
43
44 #include <sys/cdefs.h>
45 __KERNEL_RCSID(0, "$NetBSD: setovfl.c,v 1.7 2012/02/04 17:03:10 skrll Exp $");
46
47 #include "../spmath/float.h"
48 #include "../spmath/sgl_float.h"
49 #include "../spmath/dbl_float.h"
50
51 sgl_floating_point
sgl_setoverflow(unsigned int sign)52 sgl_setoverflow(unsigned int sign)
53 {
54 sgl_floating_point result;
55
56 /* set result to infinity or largest number */
57 #if 0
58 switch (Rounding_mode()) {
59 case ROUNDPLUS:
60 if (sign) {
61 Sgl_setlargestnegative(result);
62 } else {
63 Sgl_setinfinitypositive(result);
64 }
65 break;
66 case ROUNDMINUS:
67 if (sign==0) {
68 Sgl_setlargestpositive(result);
69 } else {
70 Sgl_setinfinitynegative(result);
71 }
72 break;
73 case ROUNDNEAREST:
74 Sgl_setinfinity(result,sign);
75 break;
76 default:
77 case ROUNDZERO:
78 Sgl_setlargest(result,sign);
79 break;
80 }
81 #endif
82 Sgl_setinfinity(result,sign);
83 return(result);
84 }
85
dbl_setoverflow(unsigned int sign)86 dbl_floating_point dbl_setoverflow(unsigned int sign)
87 {
88 dbl_floating_point result;
89
90 /* set result to infinity or largest number */
91 /* ignore for now
92 switch (Rounding_mode()) {
93 case ROUNDPLUS:
94 if (sign) {
95 Dbl_setlargestnegative(result);
96 }
97 else {
98 Dbl_setinfinitypositive(result);
99 }
100 break;
101 case ROUNDMINUS:
102 if (sign==0) {
103 Dbl_setlargestpositive(result);
104 }
105 else {
106 Dbl_setinfinitynegative(result);
107 }
108 break;
109 case ROUNDNEAREST:
110 Dbl_setinfinity(result,sign);
111 break;
112 case ROUNDZERO:
113 Dbl_setlargest(result,sign);
114 }
115 */
116 Dbl_setinfinity(result.wd0,result.wd1,sign);
117 return(result);
118 }
119