From: dooglus <dooglus@1f10aa63-cdf2-0310-b900-c93c546f37ac>
Date: Sun, 15 Apr 2007 15:11:32 +0000 (+0000)
Subject: Fix 1698604: Moved the quick_rng class into its own header, since it was present... 
X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=6063c6a017d00a2572b6691b055ba22b7de2991e;p=synfig.git

Fix 1698604: Moved the quick_rng class into its own header, since it was present in 2 different source files.  Use 'uint32_t' rather than 'long' as the return type of the methods which expect to be returning 32 bit values.


git-svn-id: http://svn.voria.com/code@469 1f10aa63-cdf2-0310-b900-c93c546f37ac
---

diff --git a/synfig-core/trunk/NEWS b/synfig-core/trunk/NEWS
index 257cad3..767dc3c 100644
--- a/synfig-core/trunk/NEWS
+++ b/synfig-core/trunk/NEWS
@@ -11,6 +11,7 @@
   * Fix some doxygen warnings
   * Some MacOS fixes
   * Misc bug fixes
+  * Fix random number generation for 64 bit CPUs (#1698604)
 
  0.61.05 (SVN 126) - February 27, 2005 - Misc fixes
 
diff --git a/synfig-core/trunk/src/modules/mod_noise/random.cpp b/synfig-core/trunk/src/modules/mod_noise/random.cpp
index 7ebaefa..d84f97e 100644
--- a/synfig-core/trunk/src/modules/mod_noise/random.cpp
+++ b/synfig-core/trunk/src/modules/mod_noise/random.cpp
@@ -30,43 +30,11 @@
 #endif
 
 #include "random.h"
+#include <synfig/quick_rng.h>
 #include <cmath>
 #include <cstdlib>
 #endif
 
-// A fast 32-bit linear congruential random number generator
-class quick_rng
-{
-	unsigned long next;
-public:
-	quick_rng(unsigned long seed):next(seed) { }
-
-	void set_seed(unsigned long x)
-	{
-		next=x;
-	}
-
-	unsigned long i32()
-	{
-		static const unsigned long a(1664525);
-		static const unsigned long c(1013904223);
-
-		return next=next*a+c;
-	}
-
-	unsigned long i16()
-	{
-		return i32()>>16;
-	}
-
-	float f()
-	{
-		static const float m(int(65535));
-
-		return float(i16())/m;
-	}
-};
-
 /* === M A C R O S ========================================================= */
 
 #define PI	(3.1415927)
diff --git a/synfig-core/trunk/src/synfig/guid.cpp b/synfig-core/trunk/src/synfig/guid.cpp
index a2a4ac4..1369aba 100644
--- a/synfig-core/trunk/src/synfig/guid.cpp
+++ b/synfig-core/trunk/src/synfig/guid.cpp
@@ -33,6 +33,7 @@
 #endif
 
 #include "guid.h"
+#include "quick_rng.h"
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
@@ -76,50 +77,6 @@ using namespace synfig;
 
 /* === M E T H O D S ======================================================= */
 
-// A fast 32-bit linear congruential random number generator
-class quick_rng
-{
-	unsigned long next;
-public:
-	quick_rng(unsigned long seed=0):next(seed) { }
-
-	void set_seed(unsigned long x)
-	{
-		next=x;
-	}
-
-	unsigned long i32()
-	{
-		static const unsigned long a(1664525);
-		static const unsigned long c(1013904223);
-
-		return next=next*a+c;
-	}
-
-	unsigned long i16()
-	{
-		return i32()>>16;
-	}
-
-	float f()
-	{
-		static const float m(int(65535));
-
-		return float(i16())/m;
-	}
-
-	unsigned long operator()(const unsigned long& m)
-	{
-		if(m==65536)
-			return i16();
-		else
-		if(m<=65536)
-			return i16()%m;
-		else
-			return i32()%m;
-	}
-};
-
 #define GUID_RNG quick_rng
 //#define GUID_RNG subtractive_rng
 
diff --git a/synfig-core/trunk/src/synfig/quick_rng.h b/synfig-core/trunk/src/synfig/quick_rng.h
new file mode 100644
index 0000000..9f63556
--- /dev/null
+++ b/synfig-core/trunk/src/synfig/quick_rng.h
@@ -0,0 +1,85 @@
+/* === S Y N F I G ========================================================= */
+/*!	\file quick_rng.h
+**	\brief Template Header
+**
+**	$Id: guid.h 335 2007-03-16 00:39:09Z dooglus $
+**
+**	\legal
+**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**	Copyright (c) 2007 Chris Moore
+**
+**	This package is free software; you can redistribute it and/or
+**	modify it under the terms of the GNU General Public License as
+**	published by the Free Software Foundation; either version 2 of
+**	the License, or (at your option) any later version.
+**
+**	This package is distributed in the hope that it will be useful,
+**	but WITHOUT ANY WARRANTY; without even the implied warranty of
+**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+**	General Public License for more details.
+**	\endlegal
+*/
+/* ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __SYNFIG_QUICK_RNG_H
+#define __SYNFIG_QUICK_RNG_H
+
+/* === H E A D E R S ======================================================= */
+
+#include <stdint.h>
+
+/* === M A C R O S ========================================================= */
+
+/* === T Y P E D E F S ===================================================== */
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+// A fast 32-bit linear congruential random number generator
+class quick_rng
+{
+	uint32_t next;
+public:
+	quick_rng(uint32_t seed=0):next(seed) { }
+
+	void set_seed(uint32_t x)
+	{
+		next=x;
+	}
+
+	uint32_t i32()
+	{
+		static const uint32_t a(1664525);
+		static const uint32_t c(1013904223);
+
+		return next=next*a+c;
+	}
+
+	uint32_t i16()
+	{
+		return i32()>>16;
+	}
+
+	float f()
+	{
+		static const float m(int(65535));
+
+		return float(i16())/m;
+	}
+
+	uint32_t operator()(const uint32_t& m)
+	{
+		if(m==65536)
+			return i16();
+		else
+		if(m<=65536)
+			return i16()%m;
+		else
+			return i32()%m;
+	}
+};
+
+/* === E N D =============================================================== */
+
+#endif