693 Opensource replacement of sunwlibm

Reviewed by: Igor Kozhukhov ikozhukhov@gmail.com
Reviewed by: Keith M Wesolowski <keith.wesolowski@joyent.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Approved by: Dan McDonald <danmcd@omniti.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/usr/src/lib/libm/common/C/__xpg6.c b/usr/src/lib/libm/common/C/__xpg6.c
new file mode 100644
index 0000000000..a6a9580a90
--- /dev/null
+++ b/usr/src/lib/libm/common/C/__xpg6.c
@@ -0,0 +1,54 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
+ */
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*LINTLIBRARY*/
+
+/*
+ * See /ws/unix200x-gate/usr/src/lib/libc/port/gen/xpg6.c for libc default.
+ * __xpg6 (C99/SUSv3) is first included in Solaris 10 libc and libm
+ * as well as the K2 (S1S8) libsunmath and libmopt.
+ *
+ * The default setting, _C99SUSv3_mode_OFF, means to retain current Solaris
+ * behavior which is NOT C99/SUSv3 compliant.  This is normal.  These libraries
+ * determine which standard to use based on how applications are built.  These
+ * libraries at runtime determine which behavior to choose based on the value
+ * of __xpg6.  By default they retain their original Solaris behavior.
+ *
+ * __xpg6 is used to control certain behaviors between the C99 standard, the
+ * SUSv3 standard, and Solaris.  More explanation in lib/libc/inc/xpg6.h.
+ * The XPG6 C compiler utility (c99) will add an object file that contains
+ * an alternate definition for __xpg6.  The symbol interposition provided
+ * by the linker will allow these libraries to find that symbol instead.
+ *
+ * Possible settings are available and documented in lib/libc/inc/xpg6.h.
+ */
+
+#include "xpg6.h"
+
+unsigned int __xpg6 = _C99SUSv3_mode_OFF;