1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
24 */
25 /*
26 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
27 * Use is subject to license terms.
28 */
29
30 #include "libm.h"
31
32 #if defined(__sparc)
33 int
finitel(long double x)34 finitel(long double x) {
35 int *px = (int *) &x;
36 return ((px[0] & ~0x80000000) < 0x7fff0000);
37 }
38 #elif defined(__x86)
39 int
finitel(long double x)40 finitel(long double x) {
41 int *px = (int *) &x, t = px[2] & 0x7fff;
42 #if defined(HANDLE_UNSUPPORTED)
43 return (t != 0x7fff && ((px[1] & 0x80000000) != 0 || t == 0));
44 #else
45 return (t != 0x7fff);
46 #endif
47 }
48 #endif /* defined(__sparc) || defined(__x86) */
49