25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * CDDL HEADER START
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * The contents of this file are subject to the terms of the
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Common Development and Distribution License (the "License").
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * You may not use this file except in compliance with the License.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * or http://www.opensolaris.org/os/licensing.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * See the License for the specific language governing permissions
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * and limitations under the License.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * When distributing Covered Code, include this CDDL HEADER in each
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * CDDL HEADER END
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Use is subject to license terms.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis/*LINTLIBRARY*/
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * See /ws/unix200x-gate/usr/src/lib/libc/port/gen/xpg6.c for libc default.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * __xpg6 (C99/SUSv3) is first included in Solaris 10 libc and libm
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * as well as the K2 (S1S8) libsunmath and libmopt.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * The default setting, _C99SUSv3_mode_OFF, means to retain current Solaris
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * behavior which is NOT C99/SUSv3 compliant. This is normal. These libraries
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * determine which standard to use based on how applications are built. These
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * libraries at runtime determine which behavior to choose based on the value
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * of __xpg6. By default they retain their original Solaris behavior.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * __xpg6 is used to control certain behaviors between the C99 standard, the
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * SUSv3 standard, and Solaris. More explanation in lib/libc/inc/xpg6.h.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * The XPG6 C compiler utility (c99) will add an object file that contains
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * an alternate definition for __xpg6. The symbol interposition provided
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * by the linker will allow these libraries to find that symbol instead.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Possible settings are available and documented in lib/libc/inc/xpg6.h.