From 38d6d37f2d982fa959e9e8a4a3f7e1ccfad7b5d4 Mon Sep 17 00:00:00 2001
From: Jacek Antonelli
Date: Fri, 15 Aug 2008 23:44:46 -0500
Subject: Second Life viewer sources 1.13.2.12

---
 linden/indra/llmath/llrand.cpp | 74 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 linden/indra/llmath/llrand.cpp

(limited to 'linden/indra/llmath/llrand.cpp')

diff --git a/linden/indra/llmath/llrand.cpp b/linden/indra/llmath/llrand.cpp
new file mode 100644
index 0000000..38e0639
--- /dev/null
+++ b/linden/indra/llmath/llrand.cpp
@@ -0,0 +1,74 @@
+/** 
+ * @file llrand.cpp
+ * @brief a few useful math functions.
+ *
+ * Copyright (c) 2000-2007, Linden Research, Inc.
+ * 
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ */
+
+#include "linden_common.h"
+
+#include "llrand.h"
+#include "lluuid.h"
+
+/* Put this back if you re-enabled slamFPCW
+#if LL_WINDOWS
+#include <float.h>
+#else
+#include <stdlib.h>
+#endif
+*/
+
+void slamFPCW( void )
+{
+/*
+#if LL_WINDOWS
+	// for Intel based CPUs, slam the FP control word directly
+    WORD wTemp, wSave;
+ 
+    __asm fstcw wSave
+    if (  (wSave & 0x300)            // Not single mode
+        ||(0x3f != (wSave & 0x3f))   // Exceptions enabled
+        ||(wSave & 0xC00))           // Not round to nearest mode
+    {
+        __asm
+        {
+            mov ax, wSave
+            and ax, not 300h    ;; single mode
+            or  ax, 3fh         ;; disable all exceptions
+            and ax, not 0xC00   ;; round to nearest mode
+            mov wTemp, ax
+            fldcw   wTemp
+        }
+    }
+#endif
+*/
+}
+
+LLRand	gLindenLabRandomNumber(LLUUID::getRandomSeed());
+
+F32	frand(F32 val)
+{
+//	return (val * (F32)rand()/(F32)RAND_MAX);
+	return gLindenLabRandomNumber.llfrand(val);
+}
+
-- 
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