xref: /titanic_41/usr/src/lib/libm/common/C/__xpg6.c (revision 5b2ba9d3d1e04dde804c89e9879f7dfc9bcebf61)
1*5b2ba9d3SPiotr Jasiukajtis /*
2*5b2ba9d3SPiotr Jasiukajtis  * CDDL HEADER START
3*5b2ba9d3SPiotr Jasiukajtis  *
4*5b2ba9d3SPiotr Jasiukajtis  * The contents of this file are subject to the terms of the
5*5b2ba9d3SPiotr Jasiukajtis  * Common Development and Distribution License (the "License").
6*5b2ba9d3SPiotr Jasiukajtis  * You may not use this file except in compliance with the License.
7*5b2ba9d3SPiotr Jasiukajtis  *
8*5b2ba9d3SPiotr Jasiukajtis  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*5b2ba9d3SPiotr Jasiukajtis  * or http://www.opensolaris.org/os/licensing.
10*5b2ba9d3SPiotr Jasiukajtis  * See the License for the specific language governing permissions
11*5b2ba9d3SPiotr Jasiukajtis  * and limitations under the License.
12*5b2ba9d3SPiotr Jasiukajtis  *
13*5b2ba9d3SPiotr Jasiukajtis  * When distributing Covered Code, include this CDDL HEADER in each
14*5b2ba9d3SPiotr Jasiukajtis  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*5b2ba9d3SPiotr Jasiukajtis  * If applicable, add the following below this CDDL HEADER, with the
16*5b2ba9d3SPiotr Jasiukajtis  * fields enclosed by brackets "[]" replaced with your own identifying
17*5b2ba9d3SPiotr Jasiukajtis  * information: Portions Copyright [yyyy] [name of copyright owner]
18*5b2ba9d3SPiotr Jasiukajtis  *
19*5b2ba9d3SPiotr Jasiukajtis  * CDDL HEADER END
20*5b2ba9d3SPiotr Jasiukajtis  */
21*5b2ba9d3SPiotr Jasiukajtis 
22*5b2ba9d3SPiotr Jasiukajtis /*
23*5b2ba9d3SPiotr Jasiukajtis  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
24*5b2ba9d3SPiotr Jasiukajtis  */
25*5b2ba9d3SPiotr Jasiukajtis /*
26*5b2ba9d3SPiotr Jasiukajtis  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
27*5b2ba9d3SPiotr Jasiukajtis  * Use is subject to license terms.
28*5b2ba9d3SPiotr Jasiukajtis  */
29*5b2ba9d3SPiotr Jasiukajtis 
30*5b2ba9d3SPiotr Jasiukajtis /*LINTLIBRARY*/
31*5b2ba9d3SPiotr Jasiukajtis 
32*5b2ba9d3SPiotr Jasiukajtis /*
33*5b2ba9d3SPiotr Jasiukajtis  * See /ws/unix200x-gate/usr/src/lib/libc/port/gen/xpg6.c for libc default.
34*5b2ba9d3SPiotr Jasiukajtis  * __xpg6 (C99/SUSv3) is first included in Solaris 10 libc and libm
35*5b2ba9d3SPiotr Jasiukajtis  * as well as the K2 (S1S8) libsunmath and libmopt.
36*5b2ba9d3SPiotr Jasiukajtis  *
37*5b2ba9d3SPiotr Jasiukajtis  * The default setting, _C99SUSv3_mode_OFF, means to retain current Solaris
38*5b2ba9d3SPiotr Jasiukajtis  * behavior which is NOT C99/SUSv3 compliant.  This is normal.  These libraries
39*5b2ba9d3SPiotr Jasiukajtis  * determine which standard to use based on how applications are built.  These
40*5b2ba9d3SPiotr Jasiukajtis  * libraries at runtime determine which behavior to choose based on the value
41*5b2ba9d3SPiotr Jasiukajtis  * of __xpg6.  By default they retain their original Solaris behavior.
42*5b2ba9d3SPiotr Jasiukajtis  *
43*5b2ba9d3SPiotr Jasiukajtis  * __xpg6 is used to control certain behaviors between the C99 standard, the
44*5b2ba9d3SPiotr Jasiukajtis  * SUSv3 standard, and Solaris.  More explanation in lib/libc/inc/xpg6.h.
45*5b2ba9d3SPiotr Jasiukajtis  * The XPG6 C compiler utility (c99) will add an object file that contains
46*5b2ba9d3SPiotr Jasiukajtis  * an alternate definition for __xpg6.  The symbol interposition provided
47*5b2ba9d3SPiotr Jasiukajtis  * by the linker will allow these libraries to find that symbol instead.
48*5b2ba9d3SPiotr Jasiukajtis  *
49*5b2ba9d3SPiotr Jasiukajtis  * Possible settings are available and documented in lib/libc/inc/xpg6.h.
50*5b2ba9d3SPiotr Jasiukajtis  */
51*5b2ba9d3SPiotr Jasiukajtis 
52*5b2ba9d3SPiotr Jasiukajtis #include "xpg6.h"
53*5b2ba9d3SPiotr Jasiukajtis 
54*5b2ba9d3SPiotr Jasiukajtis unsigned int __xpg6 = _C99SUSv3_mode_OFF;
55