Second Life viewer sources 1.13.2.12

1 files changed, 108 insertions, 0 deletions

diff --git a/linden/indra/newview/randgauss.h b/linden/indra/newview/randgauss.h
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+++ b/linden/indra/newview/randgauss.h
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+/** 
+ * @file randgauss.h
+ * @brief randgauss class definition
+ *
+ * Copyright (c) 2003-2007, 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 <stdlib.h>     // for rand()
+
+const F32 table[][2] = {
+{.00f, .5f},
+{.01f, .504f},
+{.02f, .508f},
+{.03f, .512f},
+{.06f, .5239f},
+{.08f, .5319f},
+{.11f, .5438f},
+{.13f, .5517f},
+{.16f, .5636f},
+{.18f, .5714f},
+{.21f, .5832f},
+{.23f, .5910f},
+{.26f, .6026f},
+{.28f, .6103f},
+{.31f, .6217f},
+{.34f, .6331f},
+{.36f, .6406f},
+{.39f, .6517f},
+{.42f, .6628f},
+{.44f, .6700f},
+{.47f, .6808f},
+{.50f, .6915f},
+{.53f, .7019f},
+{.56f, .7123f},
+{.59f, .7224f},
+{.62f, .7324f},
+{.65f, .7422f},
+{.68f, .7517f},
+{.71f, .7611f},
+{.74f, .7703f},
+{.78f, .7823f},
+{.81f, .7910f},
+{.85f, .8023f},
+{.88f, .8106f},
+{.92f, .8212f},
+{.96f, .8315f},
+{1.0f, .8413f},
+{1.04f, .8508f},
+{1.09f, .8621f},
+{1.13f, .8708f},
+{1.18f, .8810f},
+{1.23f, .8907f},
+{1.29f, .9015f},
+{1.35f, .9115f},
+{1.41f, .9207f},
+{1.48f, .9306f},
+{1.56f, .9406f},
+{1.65f, .9505f},
+{1.76f, .9608f},
+{1.89f, .9706f},
+{2.06f, .9803f},
+{2.33f, .9901f},
+{99.0f, 1.0f}};
+
+inline F32 randGauss(F32 mean, F32 stdev)
+{
+        S32 i = 0;
+        F32 u = rand() / (F32) RAND_MAX;
+        F32 n;
+        
+        if (u >= 0.5)
+        {
+                while (u > table[i][1])
+                        i++;
+                
+                n = table[i-1][0];
+                
+        } else {
+                u = 1 - u;
+                while (u > table[i][1])
+                        i++;
+                n = 1 - table[i-1][0];
+        }
+        //printf("u: %f, n: %f, i: %d\n", u, n, i);     //debug
+        
+        return (mean + stdev * n);
+}
+