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- Changed random seed initialization so that it uses the system's

Browse source 
cryptographically secure random number generator, if available, instead
  of the current time.
- Changed the random number generator from Lee Killough's algorithm to the
  SFMT607 variant of the Mersenne Twister.

SVN r1507 (trunk)
This commit is contained in:
Randy Heit 2009-03-27 04:49:17 +00:00
parent 35fe9ae690
commit 7371c4a516
28 changed files with 2067 additions and 185 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
docs/rh-log.txt
View file

@ -1,6 +1,14 @@
March 25, 2009
- Made fmodex.dll delay-loaded so the game should no be runnable on Windows
95 again, though without sound.
March 26, 2009
- Changed random seed initialization so that it uses the system's
cryptographically secure random number generator, if available, instead
of the current time.
- Changed the random number generator from Lee Killough's algorithm to the
SFMT607 variant of the Mersenne Twister.
<http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html>
March 25, 2009
- Made fmodex.dll delay-loaded so the game should be runnable on Windows 95
again, though without sound.
- Changed gameinfo_t and gameborder_t to be named structs instead of
typedef'ed anonymous structs.
- Fixed: P_AutoUseHealth() used autousemodes 0 and 1 instead of 1 and 2.

1
src/CMakeLists.txt
View file

@ -636,6 +636,7 @@ add_executable( zdoom WIN32
oplsynth/music_opldumper_mididevice.cpp
oplsynth/music_opl_mididevice.cpp
oplsynth/opl_mus_player.cpp
sfmt/SFMT.cpp
sound/fmodsound.cpp
sound/i_music.cpp
sound/i_sound.cpp

2
src/d_main.cpp
View file

@ -1580,7 +1580,7 @@ void D_DoomMain (void)
SetLanguageIDs ();
rngseed = (DWORD)time (NULL);
rngseed = I_MakeRNGSeed();
FRandom::StaticClearRandom ();
M_FindResponseFile ();

2
src/g_level.cpp
View file

@ -480,7 +480,7 @@ void G_InitNew (const char *mapname, bool bTitleLevel)
{
if (!netgame)
{ // [RH] Change the random seed for each new single player game
rngseed = rngseed*3/2;
rngseed = rngseed + 1;
}
FRandom::StaticClearRandom ();
P_ClearACSVars(true);

320
src/m_random.cpp
View file

@ -1,33 +1,61 @@
// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id: m_random.c,v 1.6 1998/05/03 23:13:18 killough Exp $
//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This source is available for distribution and/or modification
// only under the terms of the DOOM Source Code License as
// published by id Software. All rights reserved.
//
// The source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
// for more details.
//
//
// DESCRIPTION:
// Random number LUT.
//
// 1/19/98 killough: Rewrote random number generator for better randomness,
// while at the same time maintaining demo sync and backward compatibility.
//
// 2/16/98 killough: Made each RNG local to each control-equivalent block,
// to reduce the chances of demo sync problems.
//
// [RH] Changed to use different class instances for different RNGs. Be
// sure to compile with _DEBUG if you want to catch bad RNG names.
//
//-----------------------------------------------------------------------------
/*
** m_random.cpp
** Random number generators
**
**---------------------------------------------------------------------------
** Copyright 2002-2009 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
** This file employs the techniques for improving demo sync and backward
** compatibility that Lee Killough introduced with BOOM. However, none of
** the actual code he wrote is left. In contrast to BOOM, each RNG source
** in ZDoom is implemented as a separate class instance that provides an
** interface to the high-quality Mersenne Twister. See
** <http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html>.
**
** As Killough's description from m_random.h is still mostly relevant,
** here it is:
** killough 2/16/98:
**
** Make every random number generator local to each control-equivalent block.
** Critical for demo sync. The random number generators are made local to
** reduce the chances of sync problems. In Doom, if a single random number
** generator call was off, it would mess up all random number generators.
** This reduces the chances of it happening by making each RNG local to a
** control flow block.
**
** Notes to developers: if you want to reduce your demo sync hassles, follow
** this rule: for each call to P_Random you add, add a new class to the enum
** type below for each block of code which calls P_Random. If two calls to
** P_Random are not in "control-equivalent blocks", i.e. there are any cases
** where one is executed, and the other is not, put them in separate classes.
*/
// HEADER FILES ------------------------------------------------------------
#include <assert.h>
@ -41,36 +69,73 @@
#include "c_dispatch.h"
#include "files.h"
// MACROS ------------------------------------------------------------------
#define RAND_ID MAKE_ID('r','a','N','d')
// TYPES -------------------------------------------------------------------
// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
// EXTERNAL DATA DECLARATIONS ----------------------------------------------
extern FRandom pr_spawnmobj;
extern FRandom pr_acs;
extern FRandom pr_chase;
extern FRandom pr_lost;
extern FRandom pr_slam;
extern FRandom pr_exrandom;
// PUBLIC DATA DEFINITIONS -------------------------------------------------
FRandom M_Random;
inline int UpdateSeed (DWORD &seed)
{
DWORD oldseed = seed;
seed = oldseed * 1664525ul + 221297ul;
return (int)oldseed;
}
// Global seed. This is modified predictably to initialize every RNG.
DWORD rngseed;
DWORD rngseed = 1993; // killough 3/26/98: The seed
// PRIVATE DATA DEFINITIONS ------------------------------------------------
FRandom *FRandom::RNGList;
static TDeletingArray<FRandom *> NewRNGs;
// CODE --------------------------------------------------------------------
//==========================================================================
//
// FRandom - Nameless constructor
//
// Constructing an RNG in this way means it won't be stored in savegames.
//
//==========================================================================
FRandom::FRandom ()
: Seed (0), Next (NULL), NameCRC (0)
: NameCRC (0)
{
#ifdef _DEBUG
#ifndef NDEBUG
Name = NULL;
initialized = false;
#endif
Next = RNGList;
RNGList = this;
}
//==========================================================================
//
// FRandom - Named constructor
//
// This is the standard way to construct RNGs.
//
//==========================================================================
FRandom::FRandom (const char *name)
: Seed (0)
{
NameCRC = CalcCRC32 ((const BYTE *)name, (unsigned int)strlen (name));
#ifdef _DEBUG
#ifndef NDEBUG
initialized = false;
Name = name;
// A CRC of 0 is reserved for nameless RNGs that don't get stored
// in savegames. The chance is very low that you would get a CRC of 0,
@ -87,7 +152,7 @@ FRandom::FRandom (const char *name)
probe = probe->Next;
}
#ifdef _DEBUG
#ifndef NDEBUG
if (probe != NULL)
{
// Because RNGs are identified by their CRCs in save games,
@ -101,6 +166,12 @@ FRandom::FRandom (const char *name)
*prev = this;
}
//==========================================================================
//
// FRandom - Destructor
//
//==========================================================================
FRandom::~FRandom ()
{
FRandom *rng, **prev;
@ -122,101 +193,100 @@ FRandom::~FRandom ()
}
}
int FRandom::operator() ()
{
return (UpdateSeed (Seed) >> 20) & 255;
}
int FRandom::operator() (int mod)
{
if (mod <= 256)
{ // The mod is small enough, so a byte is enough to get a good number.
return (*this)() % mod;
}
else
{ // For mods > 256, construct a 32-bit int and modulo that.
int num = (*this)();
num = (num << 8) | (*this)();
num = (num << 8) | (*this)();
num = (num << 8) | (*this)();
return (num&0x7fffffff) % mod;
}
}
int FRandom::Random2 ()
{
int t = (*this)();
int u = (*this)();
return t - u;
}
int FRandom::Random2 (int mask)
{
int t = (*this)() & mask;
int u = (*this)() & mask;
return t - u;
}
int FRandom::HitDice (int count)
{
return (1 + ((UpdateSeed (Seed) >> 20) & 7)) * count;
}
// Initialize all the seeds
//==========================================================================
//
// This initialization method is critical to maintaining demo sync.
// Each seed is initialized according to its class. killough
// FRandom :: StaticClearRandom
//
// Initialize every RNGs. RNGs are seeded based on the global seed and their
// name, so each different RNG can have a different starting value despite
// being derived from a common global seed.
//
//==========================================================================
void FRandom::StaticClearRandom ()
{
const DWORD seed = rngseed*2+1; // add 3/26/98: add rngseed
FRandom *rng = FRandom::RNGList;
// go through each RNG and set each starting seed differently
while (rng != NULL)
for (FRandom *rng = FRandom::RNGList; rng != NULL; rng = rng->Next)
{
// [RH] Use the RNG's name's CRC to modify the original seed.
// This way, new RNGs can be added later, and it doesn't matter
// which order they get initialized in.
rng->Seed = seed * rng->NameCRC;
rng = rng->Next;
rng->Init(rngseed);
}
}
//==========================================================================
//
// FRandom :: Init
//
// Initialize a single RNG with a given seed.
//
//==========================================================================
void FRandom::Init(DWORD seed)
{
// [RH] Use the RNG's name's CRC to modify the original seed.
// This way, new RNGs can be added later, and it doesn't matter
// which order they get initialized in.
DWORD seeds[2] = { NameCRC, seed };
InitByArray(seeds, 2);
}
//==========================================================================
//
// FRandom :: StaticSumSeeds
//
// This function produces a DWORD that can be used to check the consistancy
// of network games between different machines. Only a select few RNGs are
// used for the sum, because not all RNGs are important to network sync.
extern FRandom pr_spawnmobj;
extern FRandom pr_acs;
extern FRandom pr_chase;
extern FRandom pr_lost;
extern FRandom pr_slam;
//
//==========================================================================
DWORD FRandom::StaticSumSeeds ()
{
return pr_spawnmobj.Seed + pr_acs.Seed + pr_chase.Seed + pr_lost.Seed + pr_slam.Seed;
return
pr_spawnmobj.sfmt.u[0] + pr_spawnmobj.idx +
pr_acs.sfmt.u[0] + pr_acs.idx +
pr_chase.sfmt.u[0] + pr_chase.idx +
pr_lost.sfmt.u[0] + pr_lost.idx +
pr_slam.sfmt.u[0] + pr_slam.idx;
}
//==========================================================================
//
// FRandom :: StaticWriteRNGState
//
// Stores the state of every RNG into a savegame.
//
//==========================================================================
void FRandom::StaticWriteRNGState (FILE *file)
{
FRandom *rng;
const DWORD seed = rngseed*2+1;
FPNGChunkArchive arc (file, RAND_ID);
arc << rngseed;
// Only write those RNGs that have been used
for (rng = FRandom::RNGList; rng != NULL; rng = rng->Next)
{
if (rng->NameCRC != 0 && rng->Seed != seed + rng->NameCRC)
// Only write those RNGs that have names
if (rng->NameCRC != 0)
{
arc << rng->NameCRC << rng->Seed;
arc << rng->NameCRC << rng->idx;
for (int i = 0; i < SFMT::N32; ++i)
{
arc << rng->sfmt.u[i];
}
}
}
}
//==========================================================================
//
// FRandom :: StaticReadRNGState
//
// Restores the state of every RNG from a savegame. RNGs that were added
// since the savegame was created are cleared to their initial value.
//
//==========================================================================
void FRandom::StaticReadRNGState (PNGHandle *png)
{
FRandom *rng;
@ -241,29 +311,46 @@ void FRandom::StaticReadRNGState (PNGHandle *png)
{
if (rng->NameCRC == crc)
{
arc << rng->Seed;
arc << rng->idx;
for (int i = 0; i < SFMT::N32; ++i)
{
arc << rng->sfmt.u[i];
}
break;
}
}
if (rng == NULL)
{ // The RNG was removed. Skip it.
int idx;
DWORD sfmt;
arc << idx;
for (int i = 0; i < SFMT::N32; ++i)
{
arc << sfmt;
}
}
}
png->File->ResetFilePtr();
}
}
//==========================================================================
//
// FRandom :: StaticFindRNG
//
// This function attempts to find an RNG with the given name.
// If it can't it will create a new one. Duplicate CRCs will
// be ignored and if it happens map to the same RNG.
// This is for use by DECORATE.
extern FRandom pr_exrandom;
static TDeletingArray<FRandom *> NewRNGs;
//
//==========================================================================
FRandom *FRandom::StaticFindRNG (const char *name)
{
DWORD NameCRC = CalcCRC32 ((const BYTE *)name, (unsigned int)strlen (name));
// Use the default RNG if this one happens to have a CRC of 0.
if (NameCRC==0) return &pr_exrandom;
if (NameCRC == 0) return &pr_exrandom;
// Find the RNG in the list, sorted by CRC
FRandom **prev = &RNGList, *probe = RNGList;
@ -285,14 +372,23 @@ FRandom *FRandom::StaticFindRNG (const char *name)
return probe;
}
#ifdef _DEBUG
//==========================================================================
//
// FRandom :: StaticPrintSeeds
//
// Prints a snapshot of the current RNG states. This is probably wrong.
//
//==========================================================================
#ifndef NDEBUG
void FRandom::StaticPrintSeeds ()
{
FRandom *rng = RNGList;
while (rng != NULL)
{
Printf ("%s: %08x\n", rng->Name, rng->Seed);
int idx = rng->idx < SFMT::N32 ? rng->idx : 0;
Printf ("%s: %08x .. %d\n", rng->Name, rng->sfmt.u[idx], idx);
rng = rng->Next;
}
}

235
src/m_random.h
View file

@ -1,57 +1,43 @@
// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id: m_random.h,v 1.9 1998/05/01 14:20:31 killough Exp $
//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This source is available for distribution and/or modification
// only under the terms of the DOOM Source Code License as
// published by id Software. All rights reserved.
//
// The source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
// for more details.
//
// DESCRIPTION:
//
// [RH] We now use BOOM's random number generator
//
//-----------------------------------------------------------------------------
/*
** m_random.h
** Random number generators
**
**---------------------------------------------------------------------------
** Copyright 2002-2009 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#ifndef __M_RANDOM__
#define __M_RANDOM__
#include <stdio.h>
#include "basictypes.h"
// killough 1/19/98: rewritten to use a better random number generator
// in the new engine, although the old one is available for compatibility.
// killough 2/16/98:
//
// Make every random number generator local to each control-equivalent block.
// Critical for demo sync. Changing the order of this list breaks all previous
// versions' demos. The random number generators are made local to reduce the
// chances of sync problems. In Doom, if a single random number generator call
// was off, it would mess up all random number generators. This reduces the
// chances of it happening by making each RNG local to a control flow block.
//
// Notes to developers: if you want to reduce your demo sync hassles, follow
// this rule: for each call to P_Random you add, add a new class to the enum
// type below for each block of code which calls P_Random. If two calls to
// P_Random are not in "control-equivalent blocks", i.e. there are any cases
// where one is executed, and the other is not, put them in separate classes.
//
// Keep all current entries in this list the same, and in the order
// indicated by the #'s, because they're critical for preserving demo
// sync. Do not remove entries simply because they become unused later.
//
// [RH] Changed to use different class instances for different generators.
// This makes adding new RNGs easier, because I don't need to recompile every
// file that uses random numbers.
#include "sfmt/SFMT.h"
struct PNGHandle;
@ -62,42 +48,169 @@ public:
FRandom (const char *name);
~FRandom ();
int operator() (); // Returns a random number in the range [0,255]
int operator() (int mod); // Returns a random number in the range [0,mod)
int Random2(); // Returns rand# - rand#
int Random2(int mask); // Returns (rand# & mask) - (rand# & mask)
int HitDice(int count); // HITDICE macro used in Heretic and Hexen
// Returns a random number in the range [0,255]
int operator()()
{
return GenRand32() & 255;
}
// Returns a random number in the range [0,mod)
int operator() (int mod)
{
return GenRand32() % mod;
}
// Returns rand# - rand#
int Random2()
{
return Random2(255);
}
// Returns (rand# & mask) - (rand# & mask)
int Random2(int mask)
{
int t = GenRand32() & mask;
return t - (GenRand32() & mask);
}
// HITDICE macro used in Heretic and Hexen
int HitDice(int count)
{
return (1 + (GenRand32() & 7)) * count;
}
int Random() // synonym for ()
{
return operator()();
}
DWORD GetSeed()
void Init(DWORD seed);
// SFMT interface
unsigned int GenRand32();
QWORD GenRand64();
void FillArray32(DWORD *array, int size);
void FillArray64(QWORD *array, int size);
void InitGenRand(DWORD seed);
void InitByArray(DWORD *init_key, int key_length);
int GetMinArraySize32();
int GetMinArraySize64();
/* These real versions are due to Isaku Wada */
/** generates a random number on [0,1]-real-interval */
static inline double ToReal1(DWORD v)
{
return Seed;
return v * (1.0/4294967295.0);
/* divided by 2^32-1 */
}
/** generates a random number on [0,1]-real-interval */
inline double GenRand_Real1()
{
return ToReal1(GenRand32());
}
/** generates a random number on [0,1)-real-interval */
static inline double ToReal2(DWORD v)
{
return v * (1.0/4294967296.0);
/* divided by 2^32 */
}
/** generates a random number on [0,1)-real-interval */
inline double GenRand_Real2()
{
return ToReal2(GenRand32());
}
/** generates a random number on (0,1)-real-interval */
static inline double ToReal3(DWORD v)
{
return (((double)v) + 0.5)*(1.0/4294967296.0);
/* divided by 2^32 */
}
/** generates a random number on (0,1)-real-interval */
inline double GenRand_Real3(void)
{
return ToReal3(GenRand32());
}
/** These real versions are due to Isaku Wada */
/** generates a random number on [0,1) with 53-bit resolution*/
static inline double ToRes53(QWORD v)
{
return v * (1.0/18446744073709551616.0L);
}
/** generates a random number on [0,1) with 53-bit resolution from two
* 32 bit integers */
static inline double ToRes53Mix(DWORD x, DWORD y)
{
return ToRes53(x | ((QWORD)y << 32));
}
/** generates a random number on [0,1) with 53-bit resolution
*/
inline double GenRand_Res53(void)
{
return ToRes53(GenRand64());
}
/** generates a random number on [0,1) with 53-bit resolution
using 32bit integer.
*/
inline double GenRand_Res53_Mix()
{
DWORD x, y;
x = GenRand32();
y = GenRand32();
return ToRes53Mix(x, y);
}
// Static interface
static void StaticClearRandom ();
static DWORD StaticSumSeeds ();
static void StaticReadRNGState (PNGHandle *png);
static void StaticWriteRNGState (FILE *file);
static FRandom *StaticFindRNG(const char *name);
#ifdef _DEBUG
#ifndef NDEBUG
static void StaticPrintSeeds ();
#endif
private:
DWORD Seed;
#ifndef NDEBUG
const char *Name;
#endif
FRandom *Next;
DWORD NameCRC;
#ifdef _DEBUG
const char *Name;
#endif
static FRandom *RNGList;
/*-------------------------------------------
SFMT internal state, index counter and flag
-------------------------------------------*/
void GenRandAll();
void GenRandArray(w128_t *array, int size);
void PeriodCertification();
/** the 128-bit internal state array */
union
{
w128_t w128[SFMT::N];
unsigned int u[SFMT::N32];
QWORD u64[SFMT::N64];
} sfmt;
/** index counter to the 32-bit internal state array */
int idx;
/** a flag: it is 0 if and only if the internal state is not yet
* initialized. */
#ifndef NDEBUG
bool initialized;
#endif
};
extern DWORD rngseed; // The starting seed (not part of state)

24
src/sdl/i_system.cpp
View file

@ -31,6 +31,7 @@
#include <sys/types.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifndef NO_GTK
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
@ -619,3 +620,26 @@ FString I_GetFromClipboard (bool use_primary_selection)
#endif
return "";
}
// Return a random seed, preferably one with lots of entropy.
unsigned int I_MakeRNGSeed()
{
unsigned int seed;
int file;
// Try reading from /dev/urandom first, then /dev/random, then
// if all else fails, use a crappy seed from time().
seed = time(NULL);
file = open("/dev/urandom", O_RDONLY);
if (file < 0)
{
file = open("/dev/random", O_RDONLY);
}
if (file >= 0)
{
read(file, &seed, sizeof(seed));
close(file);
}
return seed;
}

3
src/sdl/i_system.h
View file

@ -64,6 +64,9 @@ extern void (*I_FreezeTime) (bool frozen);
fixed_t I_GetTimeFrac (uint32 *ms);
// Return a seed value for the RNG.
unsigned int I_MakeRNGSeed();
//
// Called by D_DoomLoop,

29
src/sfmt/LICENSE.txt Normal file
View file

@ -0,0 +1,29 @@
Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
University. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* Neither the name of the Hiroshima University nor the names of
its contributors may be used to endorse or promote products
derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

156
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/**
* @file SFMT-alti.h
*
* @brief SIMD oriented Fast Mersenne Twister(SFMT)
* pseudorandom number generator
*
* @author Mutsuo Saito (Hiroshima University)
* @author Makoto Matsumoto (Hiroshima University)
*
* Copyright (C) 2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
* University. All rights reserved.
*
* The new BSD License is applied to this software.
* see LICENSE.txt
*/
#ifndef SFMT_ALTI_H
#define SFMT_ALTI_H
inline static vector unsigned int vec_recursion(vector unsigned int a,
vector unsigned int b,
vector unsigned int c,
vector unsigned int d)
ALWAYSINLINE;
/**
* This function represents the recursion formula in AltiVec and BIG ENDIAN.
* @param a a 128-bit part of the interal state array
* @param b a 128-bit part of the interal state array
* @param c a 128-bit part of the interal state array
* @param d a 128-bit part of the interal state array
* @return output
*/
inline static vector unsigned int vec_recursion(vector unsigned int a,
vector unsigned int b,
vector unsigned int c,
vector unsigned int d) {
const vector unsigned int sl1 = ALTI_SL1;
const vector unsigned int sr1 = ALTI_SR1;
#ifdef ONLY64
const vector unsigned int mask = ALTI_MSK64;
const vector unsigned char perm_sl = ALTI_SL2_PERM64;
const vector unsigned char perm_sr = ALTI_SR2_PERM64;
#else
const vector unsigned int mask = ALTI_MSK;
const vector unsigned char perm_sl = ALTI_SL2_PERM;
const vector unsigned char perm_sr = ALTI_SR2_PERM;
#endif
vector unsigned int v, w, x, y, z;
x = vec_perm(a, (vector unsigned int)perm_sl, perm_sl);
v = a;
y = vec_sr(b, sr1);
z = vec_perm(c, (vector unsigned int)perm_sr, perm_sr);
w = vec_sl(d, sl1);
z = vec_xor(z, w);
y = vec_and(y, mask);
v = vec_xor(v, x);
z = vec_xor(z, y);
z = vec_xor(z, v);
return z;
}
/**
* This function fills the internal state array with pseudorandom
* integers.
*/
inline static void gen_rand_all(void) {
int i;
vector unsigned int r, r1, r2;
r1 = sfmt[N - 2].s;
r2 = sfmt[N - 1].s;
for (i = 0; i < N - POS1; i++) {
r = vec_recursion(sfmt[i].s, sfmt[i + POS1].s, r1, r2);
sfmt[i].s = r;
r1 = r2;
r2 = r;
}
for (; i < N; i++) {
r = vec_recursion(sfmt[i].s, sfmt[i + POS1 - N].s, r1, r2);
sfmt[i].s = r;
r1 = r2;
r2 = r;
}
}
/**
* This function fills the user-specified array with pseudorandom
* integers.
*
* @param array an 128-bit array to be filled by pseudorandom numbers.
* @param size number of 128-bit pesudorandom numbers to be generated.
*/
inline static void gen_rand_array(w128_t *array, int size) {
int i, j;
vector unsigned int r, r1, r2;
r1 = sfmt[N - 2].s;
r2 = sfmt[N - 1].s;
for (i = 0; i < N - POS1; i++) {
r = vec_recursion(sfmt[i].s, sfmt[i + POS1].s, r1, r2);
array[i].s = r;
r1 = r2;
r2 = r;
}
for (; i < N; i++) {
r = vec_recursion(sfmt[i].s, array[i + POS1 - N].s, r1, r2);
array[i].s = r;
r1 = r2;
r2 = r;
}
/* main loop */
for (; i < size - N; i++) {
r = vec_recursion(array[i - N].s, array[i + POS1 - N].s, r1, r2);
array[i].s = r;
r1 = r2;
r2 = r;
}
for (j = 0; j < 2 * N - size; j++) {
sfmt[j].s = array[j + size - N].s;
}
for (; i < size; i++) {
r = vec_recursion(array[i - N].s, array[i + POS1 - N].s, r1, r2);
array[i].s = r;
sfmt[j++].s = r;
r1 = r2;
r2 = r;
}
}
#ifndef ONLY64
#if defined(__APPLE__)
#define ALTI_SWAP (vector unsigned char) \
(4, 5, 6, 7, 0, 1, 2, 3, 12, 13, 14, 15, 8, 9, 10, 11)
#else
#define ALTI_SWAP {4, 5, 6, 7, 0, 1, 2, 3, 12, 13, 14, 15, 8, 9, 10, 11}
#endif
/**
* This function swaps high and low 32-bit of 64-bit integers in user
* specified array.
*
* @param array an 128-bit array to be swaped.
* @param size size of 128-bit array.
*/
inline static void swap(w128_t *array, int size) {
int i;
const vector unsigned char perm = ALTI_SWAP;
for (i = 0; i < size; i++) {
array[i].s = vec_perm(array[i].s, (vector unsigned int)perm, perm);
}
}
#endif
#endif

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#ifndef SFMT_PARAMS_H
#define SFMT_PARAMS_H
/*----------------------
the parameters of SFMT
following definitions are in paramsXXXX.h file.
----------------------*/
/** the pick up position of the array.
#define POS1 122
*/
/** the parameter of shift left as four 32-bit registers.
#define SL1 18
*/
/** the parameter of shift left as one 128-bit register.
* The 128-bit integer is shifted by (SL2 * 8) bits.
#define SL2 1
*/
/** the parameter of shift right as four 32-bit registers.
#define SR1 11
*/
/** the parameter of shift right as one 128-bit register.
* The 128-bit integer is shifted by (SL2 * 8) bits.
#define SR2 1
*/
/** A bitmask, used in the recursion. These parameters are introduced
* to break symmetry of SIMD.
#define MSK1 0xdfffffefU
#define MSK2 0xddfecb7fU
#define MSK3 0xbffaffffU
#define MSK4 0xbffffff6U
*/
/** These definitions are part of a 128-bit period certification vector.
#define PARITY1 0x00000001U
#define PARITY2 0x00000000U
#define PARITY3 0x00000000U
#define PARITY4 0xc98e126aU
*/
#if MEXP == 607
#include "SFMT-params607.h"
#elif MEXP == 1279
#include "SFMT-params1279.h"
#elif MEXP == 2281
#include "SFMT-params2281.h"
#elif MEXP == 4253
#include "SFMT-params4253.h"
#elif MEXP == 11213
#include "SFMT-params11213.h"
#elif MEXP == 19937
#include "SFMT-params19937.h"
#elif MEXP == 44497
#include "SFMT-params44497.h"
#elif MEXP == 86243
#include "SFMT-params86243.h"
#elif MEXP == 132049
#include "SFMT-params132049.h"
#elif MEXP == 216091
#include "SFMT-params216091.h"
#else
#error "MEXP is not valid."
#undef MEXP
#endif
#endif /* SFMT_PARAMS_H */

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#ifndef SFMT_PARAMS11213_H
#define SFMT_PARAMS11213_H
#define POS1 68
#define SL1 14
#define SL2 3
#define SR1 7
#define SR2 3
#define MSK1 0xeffff7fbU
#define MSK2 0xffffffefU
#define MSK3 0xdfdfbfffU
#define MSK4 0x7fffdbfdU
#define PARITY1 0x00000001U
#define PARITY2 0x00000000U
#define PARITY3 0xe8148000U
#define PARITY4 0xd0c7afa3U
/* PARAMETERS FOR ALTIVEC */
#if defined(__APPLE__) /* For OSX */
#define ALTI_SL1 (vector unsigned int)(SL1, SL1, SL1, SL1)
#define ALTI_SR1 (vector unsigned int)(SR1, SR1, SR1, SR1)
#define ALTI_MSK (vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
#define ALTI_MSK64 \
(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
#define ALTI_SL2_PERM \
(vector unsigned char)(3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10)
#define ALTI_SL2_PERM64 \
(vector unsigned char)(3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2)
#define ALTI_SR2_PERM \
(vector unsigned char)(5,6,7,0,9,10,11,4,13,14,15,8,19,19,19,12)
#define ALTI_SR2_PERM64 \
(vector unsigned char)(13,14,15,0,1,2,3,4,19,19,19,8,9,10,11,12)
#else /* For OTHER OSs(Linux?) */
#define ALTI_SL1 {SL1, SL1, SL1, SL1}
#define ALTI_SR1 {SR1, SR1, SR1, SR1}
#define ALTI_MSK {MSK1, MSK2, MSK3, MSK4}
#define ALTI_MSK64 {MSK2, MSK1, MSK4, MSK3}
#define ALTI_SL2_PERM {3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10}
#define ALTI_SL2_PERM64 {3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2}
#define ALTI_SR2_PERM {5,6,7,0,9,10,11,4,13,14,15,8,19,19,19,12}
#define ALTI_SR2_PERM64 {13,14,15,0,1,2,3,4,19,19,19,8,9,10,11,12}
#endif /* For OSX */
#define IDSTR "SFMT-11213:68-14-3-7-3:effff7fb-ffffffef-dfdfbfff-7fffdbfd"
#endif /* SFMT_PARAMS11213_H */

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#ifndef SFMT_PARAMS1279_H
#define SFMT_PARAMS1279_H
#define POS1 7
#define SL1 14
#define SL2 3
#define SR1 5
#define SR2 1
#define MSK1 0xf7fefffdU
#define MSK2 0x7fefcfffU
#define MSK3 0xaff3ef3fU
#define MSK4 0xb5ffff7fU
#define PARITY1 0x00000001U
#define PARITY2 0x00000000U
#define PARITY3 0x00000000U
#define PARITY4 0x20000000U
/* PARAMETERS FOR ALTIVEC */
#if defined(__APPLE__) /* For OSX */
#define ALTI_SL1 (vector unsigned int)(SL1, SL1, SL1, SL1)
#define ALTI_SR1 (vector unsigned int)(SR1, SR1, SR1, SR1)
#define ALTI_MSK (vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
#define ALTI_MSK64 \
(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
#define ALTI_SL2_PERM \
(vector unsigned char)(3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10)
#define ALTI_SL2_PERM64 \
(vector unsigned char)(3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2)
#define ALTI_SR2_PERM \
(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
#define ALTI_SR2_PERM64 \
(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
#else /* For OTHER OSs(Linux?) */
#define ALTI_SL1 {SL1, SL1, SL1, SL1}
#define ALTI_SR1 {SR1, SR1, SR1, SR1}
#define ALTI_MSK {MSK1, MSK2, MSK3, MSK4}
#define ALTI_MSK64 {MSK2, MSK1, MSK4, MSK3}
#define ALTI_SL2_PERM {3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10}
#define ALTI_SL2_PERM64 {3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2}
#define ALTI_SR2_PERM {7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
#define ALTI_SR2_PERM64 {15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
#endif /* For OSX */
#define IDSTR "SFMT-1279:7-14-3-5-1:f7fefffd-7fefcfff-aff3ef3f-b5ffff7f"
#endif /* SFMT_PARAMS1279_H */

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#ifndef SFMT_PARAMS132049_H
#define SFMT_PARAMS132049_H
#define POS1 110
#define SL1 19
#define SL2 1
#define SR1 21
#define SR2 1
#define MSK1 0xffffbb5fU
#define MSK2 0xfb6ebf95U
#define MSK3 0xfffefffaU
#define MSK4 0xcff77fffU
#define PARITY1 0x00000001U
#define PARITY2 0x00000000U
#define PARITY3 0xcb520000U
#define PARITY4 0xc7e91c7dU
/* PARAMETERS FOR ALTIVEC */
#if defined(__APPLE__) /* For OSX */
#define ALTI_SL1 (vector unsigned int)(SL1, SL1, SL1, SL1)
#define ALTI_SR1 (vector unsigned int)(SR1, SR1, SR1, SR1)
#define ALTI_MSK (vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
#define ALTI_MSK64 \
(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
#define ALTI_SL2_PERM \
(vector unsigned char)(1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8)
#define ALTI_SL2_PERM64 \
(vector unsigned char)(1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0)
#define ALTI_SR2_PERM \
(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
#define ALTI_SR2_PERM64 \
(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
#else /* For OTHER OSs(Linux?) */
#define ALTI_SL1 {SL1, SL1, SL1, SL1}
#define ALTI_SR1 {SR1, SR1, SR1, SR1}
#define ALTI_MSK {MSK1, MSK2, MSK3, MSK4}
#define ALTI_MSK64 {MSK2, MSK1, MSK4, MSK3}
#define ALTI_SL2_PERM {1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8}
#define ALTI_SL2_PERM64 {1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0}
#define ALTI_SR2_PERM {7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
#define ALTI_SR2_PERM64 {15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
#endif /* For OSX */
#define IDSTR "SFMT-132049:110-19-1-21-1:ffffbb5f-fb6ebf95-fffefffa-cff77fff"
#endif /* SFMT_PARAMS132049_H */

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#ifndef SFMT_PARAMS19937_H
#define SFMT_PARAMS19937_H
#define POS1 122
#define SL1 18
#define SL2 1
#define SR1 11
#define SR2 1
#define MSK1 0xdfffffefU
#define MSK2 0xddfecb7fU
#define MSK3 0xbffaffffU
#define MSK4 0xbffffff6U
#define PARITY1 0x00000001U
#define PARITY2 0x00000000U
#define PARITY3 0x00000000U
#define PARITY4 0x13c9e684U
/* PARAMETERS FOR ALTIVEC */
#if defined(__APPLE__) /* For OSX */
#define ALTI_SL1 (vector unsigned int)(SL1, SL1, SL1, SL1)
#define ALTI_SR1 (vector unsigned int)(SR1, SR1, SR1, SR1)
#define ALTI_MSK (vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
#define ALTI_MSK64 \
(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
#define ALTI_SL2_PERM \
(vector unsigned char)(1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8)
#define ALTI_SL2_PERM64 \
(vector unsigned char)(1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0)
#define ALTI_SR2_PERM \
(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
#define ALTI_SR2_PERM64 \
(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
#else /* For OTHER OSs(Linux?) */
#define ALTI_SL1 {SL1, SL1, SL1, SL1}
#define ALTI_SR1 {SR1, SR1, SR1, SR1}
#define ALTI_MSK {MSK1, MSK2, MSK3, MSK4}
#define ALTI_MSK64 {MSK2, MSK1, MSK4, MSK3}
#define ALTI_SL2_PERM {1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8}
#define ALTI_SL2_PERM64 {1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0}
#define ALTI_SR2_PERM {7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
#define ALTI_SR2_PERM64 {15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
#endif /* For OSX */
#define IDSTR "SFMT-19937:122-18-1-11-1:dfffffef-ddfecb7f-bffaffff-bffffff6"
#endif /* SFMT_PARAMS19937_H */

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#ifndef SFMT_PARAMS216091_H
#define SFMT_PARAMS216091_H
#define POS1 627
#define SL1 11
#define SL2 3
#define SR1 10
#define SR2 1
#define MSK1 0xbff7bff7U
#define MSK2 0xbfffffffU
#define MSK3 0xbffffa7fU
#define MSK4 0xffddfbfbU
#define PARITY1 0xf8000001U
#define PARITY2 0x89e80709U
#define PARITY3 0x3bd2b64bU
#define PARITY4 0x0c64b1e4U
/* PARAMETERS FOR ALTIVEC */
#if defined(__APPLE__) /* For OSX */
#define ALTI_SL1 (vector unsigned int)(SL1, SL1, SL1, SL1)
#define ALTI_SR1 (vector unsigned int)(SR1, SR1, SR1, SR1)
#define ALTI_MSK (vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
#define ALTI_MSK64 \
(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
#define ALTI_SL2_PERM \
(vector unsigned char)(3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10)
#define ALTI_SL2_PERM64 \
(vector unsigned char)(3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2)
#define ALTI_SR2_PERM \
(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
#define ALTI_SR2_PERM64 \
(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
#else /* For OTHER OSs(Linux?) */
#define ALTI_SL1 {SL1, SL1, SL1, SL1}
#define ALTI_SR1 {SR1, SR1, SR1, SR1}
#define ALTI_MSK {MSK1, MSK2, MSK3, MSK4}
#define ALTI_MSK64 {MSK2, MSK1, MSK4, MSK3}
#define ALTI_SL2_PERM {3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10}
#define ALTI_SL2_PERM64 {3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2}
#define ALTI_SR2_PERM {7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
#define ALTI_SR2_PERM64 {15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
#endif /* For OSX */
#define IDSTR "SFMT-216091:627-11-3-10-1:bff7bff7-bfffffff-bffffa7f-ffddfbfb"
#endif /* SFMT_PARAMS216091_H */

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#ifndef SFMT_PARAMS2281_H
#define SFMT_PARAMS2281_H
#define POS1 12
#define SL1 19
#define SL2 1
#define SR1 5
#define SR2 1
#define MSK1 0xbff7ffbfU
#define MSK2 0xfdfffffeU
#define MSK3 0xf7ffef7fU
#define MSK4 0xf2f7cbbfU
#define PARITY1 0x00000001U
#define PARITY2 0x00000000U
#define PARITY3 0x00000000U
#define PARITY4 0x41dfa600U
/* PARAMETERS FOR ALTIVEC */
#if defined(__APPLE__) /* For OSX */
#define ALTI_SL1 (vector unsigned int)(SL1, SL1, SL1, SL1)
#define ALTI_SR1 (vector unsigned int)(SR1, SR1, SR1, SR1)
#define ALTI_MSK (vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
#define ALTI_MSK64 \
(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
#define ALTI_SL2_PERM \
(vector unsigned char)(1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8)
#define ALTI_SL2_PERM64 \
(vector unsigned char)(1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0)
#define ALTI_SR2_PERM \
(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
#define ALTI_SR2_PERM64 \
(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
#else /* For OTHER OSs(Linux?) */
#define ALTI_SL1 {SL1, SL1, SL1, SL1}
#define ALTI_SR1 {SR1, SR1, SR1, SR1}
#define ALTI_MSK {MSK1, MSK2, MSK3, MSK4}
#define ALTI_MSK64 {MSK2, MSK1, MSK4, MSK3}
#define ALTI_SL2_PERM {1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8}
#define ALTI_SL2_PERM64 {1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0}
#define ALTI_SR2_PERM {7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
#define ALTI_SR2_PERM64 {15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
#endif /* For OSX */
#define IDSTR "SFMT-2281:12-19-1-5-1:bff7ffbf-fdfffffe-f7ffef7f-f2f7cbbf"
#endif /* SFMT_PARAMS2281_H */

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#ifndef SFMT_PARAMS4253_H
#define SFMT_PARAMS4253_H
#define POS1 17
#define SL1 20
#define SL2 1
#define SR1 7
#define SR2 1
#define MSK1 0x9f7bffffU
#define MSK2 0x9fffff5fU
#define MSK3 0x3efffffbU
#define MSK4 0xfffff7bbU
#define PARITY1 0xa8000001U
#define PARITY2 0xaf5390a3U
#define PARITY3 0xb740b3f8U
#define PARITY4 0x6c11486dU
/* PARAMETERS FOR ALTIVEC */
#if defined(__APPLE__) /* For OSX */
#define ALTI_SL1 (vector unsigned int)(SL1, SL1, SL1, SL1)
#define ALTI_SR1 (vector unsigned int)(SR1, SR1, SR1, SR1)
#define ALTI_MSK (vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
#define ALTI_MSK64 \
(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
#define ALTI_SL2_PERM \
(vector unsigned char)(1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8)
#define ALTI_SL2_PERM64 \
(vector unsigned char)(1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0)
#define ALTI_SR2_PERM \
(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
#define ALTI_SR2_PERM64 \
(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
#else /* For OTHER OSs(Linux?) */
#define ALTI_SL1 {SL1, SL1, SL1, SL1}
#define ALTI_SR1 {SR1, SR1, SR1, SR1}
#define ALTI_MSK {MSK1, MSK2, MSK3, MSK4}
#define ALTI_MSK64 {MSK2, MSK1, MSK4, MSK3}
#define ALTI_SL2_PERM {1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8}
#define ALTI_SL2_PERM64 {1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0}
#define ALTI_SR2_PERM {7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
#define ALTI_SR2_PERM64 {15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
#endif /* For OSX */
#define IDSTR "SFMT-4253:17-20-1-7-1:9f7bffff-9fffff5f-3efffffb-fffff7bb"
#endif /* SFMT_PARAMS4253_H */

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#ifndef SFMT_PARAMS44497_H
#define SFMT_PARAMS44497_H
#define POS1 330
#define SL1 5
#define SL2 3
#define SR1 9
#define SR2 3
#define MSK1 0xeffffffbU
#define MSK2 0xdfbebfffU
#define MSK3 0xbfbf7befU
#define MSK4 0x9ffd7bffU
#define PARITY1 0x00000001U
#define PARITY2 0x00000000U
#define PARITY3 0xa3ac4000U
#define PARITY4 0xecc1327aU
/* PARAMETERS FOR ALTIVEC */
#if defined(__APPLE__) /* For OSX */
#define ALTI_SL1 (vector unsigned int)(SL1, SL1, SL1, SL1)
#define ALTI_SR1 (vector unsigned int)(SR1, SR1, SR1, SR1)
#define ALTI_MSK (vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
#define ALTI_MSK64 \
(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
#define ALTI_SL2_PERM \
(vector unsigned char)(3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10)
#define ALTI_SL2_PERM64 \
(vector unsigned char)(3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2)
#define ALTI_SR2_PERM \
(vector unsigned char)(5,6,7,0,9,10,11,4,13,14,15,8,19,19,19,12)
#define ALTI_SR2_PERM64 \
(vector unsigned char)(13,14,15,0,1,2,3,4,19,19,19,8,9,10,11,12)
#else /* For OTHER OSs(Linux?) */
#define ALTI_SL1 {SL1, SL1, SL1, SL1}
#define ALTI_SR1 {SR1, SR1, SR1, SR1}
#define ALTI_MSK {MSK1, MSK2, MSK3, MSK4}
#define ALTI_MSK64 {MSK2, MSK1, MSK4, MSK3}
#define ALTI_SL2_PERM {3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10}
#define ALTI_SL2_PERM64 {3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2}
#define ALTI_SR2_PERM {5,6,7,0,9,10,11,4,13,14,15,8,19,19,19,12}
#define ALTI_SR2_PERM64 {13,14,15,0,1,2,3,4,19,19,19,8,9,10,11,12}
#endif /* For OSX */
#define IDSTR "SFMT-44497:330-5-3-9-3:effffffb-dfbebfff-bfbf7bef-9ffd7bff"
#endif /* SFMT_PARAMS44497_H */

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#ifndef SFMT_PARAMS607_H
#define SFMT_PARAMS607_H
#define POS1 2
#define SL1 15
#define SL2 3
#define SR1 13
#define SR2 3
#define MSK1 0xfdff37ffU
#define MSK2 0xef7f3f7dU
#define MSK3 0xff777b7dU
#define MSK4 0x7ff7fb2fU
#define PARITY1 0x00000001U
#define PARITY2 0x00000000U
#define PARITY3 0x00000000U
#define PARITY4 0x5986f054U
/* PARAMETERS FOR ALTIVEC */
#if defined(__APPLE__) /* For OSX */
#define ALTI_SL1 (vector unsigned int)(SL1, SL1, SL1, SL1)
#define ALTI_SR1 (vector unsigned int)(SR1, SR1, SR1, SR1)
#define ALTI_MSK (vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
#define ALTI_MSK64 \
(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
#define ALTI_SL2_PERM \
(vector unsigned char)(3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10)
#define ALTI_SL2_PERM64 \
(vector unsigned char)(3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2)
#define ALTI_SR2_PERM \
(vector unsigned char)(5,6,7,0,9,10,11,4,13,14,15,8,19,19,19,12)
#define ALTI_SR2_PERM64 \
(vector unsigned char)(13,14,15,0,1,2,3,4,19,19,19,8,9,10,11,12)
#else /* For OTHER OSs(Linux?) */
#define ALTI_SL1 {SL1, SL1, SL1, SL1}
#define ALTI_SR1 {SR1, SR1, SR1, SR1}
#define ALTI_MSK {MSK1, MSK2, MSK3, MSK4}
#define ALTI_MSK64 {MSK2, MSK1, MSK4, MSK3}
#define ALTI_SL2_PERM {3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10}
#define ALTI_SL2_PERM64 {3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2}
#define ALTI_SR2_PERM {5,6,7,0,9,10,11,4,13,14,15,8,19,19,19,12}
#define ALTI_SR2_PERM64 {13,14,15,0,1,2,3,4,19,19,19,8,9,10,11,12}
#endif /* For OSX */
#define IDSTR "SFMT-607:2-15-3-13-3:fdff37ff-ef7f3f7d-ff777b7d-7ff7fb2f"
#endif /* SFMT_PARAMS607_H */

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#ifndef SFMT_PARAMS86243_H
#define SFMT_PARAMS86243_H
#define POS1 366
#define SL1 6
#define SL2 7
#define SR1 19
#define SR2 1
#define MSK1 0xfdbffbffU
#define MSK2 0xbff7ff3fU
#define MSK3 0xfd77efffU
#define MSK4 0xbf9ff3ffU
#define PARITY1 0x00000001U
#define PARITY2 0x00000000U
#define PARITY3 0x00000000U
#define PARITY4 0xe9528d85U
/* PARAMETERS FOR ALTIVEC */
#if defined(__APPLE__) /* For OSX */
#define ALTI_SL1 (vector unsigned int)(SL1, SL1, SL1, SL1)
#define ALTI_SR1 (vector unsigned int)(SR1, SR1, SR1, SR1)
#define ALTI_MSK (vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
#define ALTI_MSK64 \
(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
#define ALTI_SL2_PERM \
(vector unsigned char)(25,25,25,25,3,25,25,25,7,0,1,2,11,4,5,6)
#define ALTI_SL2_PERM64 \
(vector unsigned char)(7,25,25,25,25,25,25,25,15,0,1,2,3,4,5,6)
#define ALTI_SR2_PERM \
(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
#define ALTI_SR2_PERM64 \
(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
#else /* For OTHER OSs(Linux?) */
#define ALTI_SL1 {SL1, SL1, SL1, SL1}
#define ALTI_SR1 {SR1, SR1, SR1, SR1}
#define ALTI_MSK {MSK1, MSK2, MSK3, MSK4}
#define ALTI_MSK64 {MSK2, MSK1, MSK4, MSK3}
#define ALTI_SL2_PERM {25,25,25,25,3,25,25,25,7,0,1,2,11,4,5,6}
#define ALTI_SL2_PERM64 {7,25,25,25,25,25,25,25,15,0,1,2,3,4,5,6}
#define ALTI_SR2_PERM {7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
#define ALTI_SR2_PERM64 {15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
#endif /* For OSX */
#define IDSTR "SFMT-86243:366-6-7-19-1:fdbffbff-bff7ff3f-fd77efff-bf9ff3ff"
#endif /* SFMT_PARAMS86243_H */

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/**
* @file SFMT-sse2.h
* @brief SIMD oriented Fast Mersenne Twister(SFMT) for Intel SSE2
*
* @author Mutsuo Saito (Hiroshima University)
* @author Makoto Matsumoto (Hiroshima University)
*
* @note We assume LITTLE ENDIAN in this file
*
* Copyright (C) 2006, 2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
* University. All rights reserved.
*
* The new BSD License is applied to this software, see LICENSE.txt
*/
#ifndef SFMT_SSE2_H
#define SFMT_SSE2_H
PRE_ALWAYS static __m128i mm_recursion(__m128i *a, __m128i *b, __m128i c,
__m128i d, __m128i mask) ALWAYSINLINE;
/**
* This function represents the recursion formula.
* @param a a 128-bit part of the interal state array
* @param b a 128-bit part of the interal state array
* @param c a 128-bit part of the interal state array
* @param d a 128-bit part of the interal state array
* @param mask 128-bit mask
* @return output
*/
PRE_ALWAYS static __m128i mm_recursion(__m128i *a, __m128i *b,
__m128i c, __m128i d, __m128i mask) {
__m128i v, x, y, z;
x = _mm_load_si128(a);
y = _mm_srli_epi32(*b, SR1);
z = _mm_srli_si128(c, SR2);
v = _mm_slli_epi32(d, SL1);
z = _mm_xor_si128(z, x);
z = _mm_xor_si128(z, v);
x = _mm_slli_si128(x, SL2);
y = _mm_and_si128(y, mask);
z = _mm_xor_si128(z, x);
z = _mm_xor_si128(z, y);
return z;
}
/**
* This function fills the internal state array with pseudorandom
* integers.
*/
inline static void gen_rand_all(void) {
int i;
__m128i r, r1, r2, mask;
mask = _mm_set_epi32(MSK4, MSK3, MSK2, MSK1);
r1 = _mm_load_si128(&sfmt[N - 2].si);
r2 = _mm_load_si128(&sfmt[N - 1].si);
for (i = 0; i < N - POS1; i++) {
r = mm_recursion(&sfmt[i].si, &sfmt[i + POS1].si, r1, r2, mask);
_mm_store_si128(&sfmt[i].si, r);
r1 = r2;
r2 = r;
}
for (; i < N; i++) {
r = mm_recursion(&sfmt[i].si, &sfmt[i + POS1 - N].si, r1, r2, mask);
_mm_store_si128(&sfmt[i].si, r);
r1 = r2;
r2 = r;
}
}
/**
* This function fills the user-specified array with pseudorandom
* integers.
*
* @param array an 128-bit array to be filled by pseudorandom numbers.
* @param size number of 128-bit pesudorandom numbers to be generated.
*/
inline static void gen_rand_array(w128_t *array, int size) {
int i, j;
__m128i r, r1, r2, mask;
mask = _mm_set_epi32(MSK4, MSK3, MSK2, MSK1);
r1 = _mm_load_si128(&sfmt[N - 2].si);
r2 = _mm_load_si128(&sfmt[N - 1].si);
for (i = 0; i < N - POS1; i++) {
r = mm_recursion(&sfmt[i].si, &sfmt[i + POS1].si, r1, r2, mask);
_mm_store_si128(&array[i].si, r);
r1 = r2;
r2 = r;
}
for (; i < N; i++) {
r = mm_recursion(&sfmt[i].si, &array[i + POS1 - N].si, r1, r2, mask);
_mm_store_si128(&array[i].si, r);
r1 = r2;
r2 = r;
}
/* main loop */
for (; i < size - N; i++) {
r = mm_recursion(&array[i - N].si, &array[i + POS1 - N].si, r1, r2,
mask);
_mm_store_si128(&array[i].si, r);
r1 = r2;
r2 = r;
}
for (j = 0; j < 2 * N - size; j++) {
r = _mm_load_si128(&array[j + size - N].si);
_mm_store_si128(&sfmt[j].si, r);
}
for (; i < size; i++) {
r = mm_recursion(&array[i - N].si, &array[i + POS1 - N].si, r1, r2,
mask);
_mm_store_si128(&array[i].si, r);
_mm_store_si128(&sfmt[j++].si, r);
r1 = r2;
r2 = r;
}
}
#endif

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/**
* @file SFMT.c
* @brief SIMD oriented Fast Mersenne Twister(SFMT)
*
* @author Mutsuo Saito (Hiroshima University)
* @author Makoto Matsumoto (Hiroshima University)
*
* Copyright (C) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
* University. All rights reserved.
*
* The new BSD License is applied to this software, see LICENSE.txt
*/
#include <string.h>
#include <assert.h>
#include "m_random.h"
#include "SFMT-params.h"
#if defined(__BIG_ENDIAN__) && !defined(__amd64) && !defined(BIG_ENDIAN64)
#define BIG_ENDIAN64 1
#endif
#if defined(HAVE_ALTIVEC) && !defined(BIG_ENDIAN64)
#define BIG_ENDIAN64 1
#endif
#if defined(ONLY64) && !defined(BIG_ENDIAN64)
#if defined(__GNUC__)
#error "-DONLY64 must be specified with -DBIG_ENDIAN64"
#endif
#undef ONLY64
#endif
/** a parity check vector which certificate the period of 2^{MEXP} */
static const DWORD parity[4] = { PARITY1, PARITY2, PARITY3, PARITY4 };
/*----------------
STATIC FUNCTIONS
----------------*/
inline static int idxof(int i);
inline static void rshift128(w128_t *out, w128_t const *in, int shift);
inline static void lshift128(w128_t *out, w128_t const *in, int shift);
inline static DWORD func1(DWORD x);
inline static DWORD func2(DWORD x);
#if defined(BIG_ENDIAN64) && !defined(ONLY64)
inline static void swap(w128_t *array, int size);
#endif
// These SIMD versions WILL NOT work as-is. I'm not even sure SSE2 is
// safe to provide as a runtime option without significant changes to
// how the state is stored, since the VC++ docs warn that:
// Using variables of type __m128i will cause the compiler to generate
// the SSE2 movdqa instruction. This instruction does not cause a fault
// on Pentium III processors but will result in silent failure, with
// possible side effects caused by whatever instructions movdqa
// translates into on Pentium III processors.
#if defined(HAVE_ALTIVEC)
#include "SFMT-alti.h"
#elif defined(HAVE_SSE2)
#include "SFMT-sse2.h"
#endif
/**
* This function simulate a 64-bit index of LITTLE ENDIAN
* in BIG ENDIAN machine.
*/
#ifdef ONLY64
inline static int idxof(int i) {
return i ^ 1;
}
#else
inline static int idxof(int i) {
return i;
}
#endif
/**
* This function simulates SIMD 128-bit right shift by the standard C.
* The 128-bit integer given in in is shifted by (shift * 8) bits.
* This function simulates the LITTLE ENDIAN SIMD.
* @param out the output of this function
* @param in the 128-bit data to be shifted
* @param shift the shift value
*/
#ifdef ONLY64
inline static void rshift128(w128_t *out, w128_t const *in, int shift) {
QWORD th, tl, oh, ol;
th = ((QWORD)in->u[2] << 32) | ((QWORD)in->u[3]);
tl = ((QWORD)in->u[0] << 32) | ((QWORD)in->u[1]);
oh = th >> (shift * 8);
ol = tl >> (shift * 8);
ol |= th << (64 - shift * 8);
out->u[0] = (DWORD)(ol >> 32);
out->u[1] = (DWORD)ol;
out->u[2] = (DWORD)(oh >> 32);
out->u[3] = (DWORD)oh;
}
#else
inline static void rshift128(w128_t *out, w128_t const *in, int shift) {
QWORD th, tl, oh, ol;
th = ((QWORD)in->u[3] << 32) | ((QWORD)in->u[2]);
tl = ((QWORD)in->u[1] << 32) | ((QWORD)in->u[0]);
oh = th >> (shift * 8);
ol = tl >> (shift * 8);
ol |= th << (64 - shift * 8);
out->u[1] = (DWORD)(ol >> 32);
out->u[0] = (DWORD)ol;
out->u[3] = (DWORD)(oh >> 32);
out->u[2] = (DWORD)oh;
}
#endif
/**
* This function simulates SIMD 128-bit left shift by the standard C.
* The 128-bit integer given in in is shifted by (shift * 8) bits.
* This function simulates the LITTLE ENDIAN SIMD.
* @param out the output of this function
* @param in the 128-bit data to be shifted
* @param shift the shift value
*/
#ifdef ONLY64
inline static void lshift128(w128_t *out, w128_t const *in, int shift) {
QWORD th, tl, oh, ol;
th = ((QWORD)in->u[2] << 32) | ((QWORD)in->u[3]);
tl = ((QWORD)in->u[0] << 32) | ((QWORD)in->u[1]);
oh = th << (shift * 8);
ol = tl << (shift * 8);
oh |= tl >> (64 - shift * 8);
out->u[0] = (DWORD)(ol >> 32);
out->u[1] = (DWORD)ol;
out->u[2] = (DWORD)(oh >> 32);
out->u[3] = (DWORD)oh;
}
#else
inline static void lshift128(w128_t *out, w128_t const *in, int shift) {
QWORD th, tl, oh, ol;
th = ((QWORD)in->u[3] << 32) | ((QWORD)in->u[2]);
tl = ((QWORD)in->u[1] << 32) | ((QWORD)in->u[0]);
oh = th << (shift * 8);
ol = tl << (shift * 8);
oh |= tl >> (64 - shift * 8);
out->u[1] = (DWORD)(ol >> 32);
out->u[0] = (DWORD)ol;
out->u[3] = (DWORD)(oh >> 32);
out->u[2] = (DWORD)oh;
}
#endif
/**
* This function represents the recursion formula.
* @param r output
* @param a a 128-bit part of the internal state array
* @param b a 128-bit part of the internal state array
* @param c a 128-bit part of the internal state array
* @param d a 128-bit part of the internal state array
*/
#if (!defined(HAVE_ALTIVEC)) && (!defined(HAVE_SSE2))
#ifdef ONLY64
inline static void do_recursion(w128_t *r, w128_t *a, w128_t *b, w128_t *c,
w128_t *d) {
w128_t x;
w128_t y;
lshift128(&x, a, SL2);
rshift128(&y, c, SR2);
r->u[0] = a->u[0] ^ x.u[0] ^ ((b->u[0] >> SR1) & MSK2) ^ y.u[0]
^ (d->u[0] << SL1);
r->u[1] = a->u[1] ^ x.u[1] ^ ((b->u[1] >> SR1) & MSK1) ^ y.u[1]
^ (d->u[1] << SL1);
r->u[2] = a->u[2] ^ x.u[2] ^ ((b->u[2] >> SR1) & MSK4) ^ y.u[2]
^ (d->u[2] << SL1);
r->u[3] = a->u[3] ^ x.u[3] ^ ((b->u[3] >> SR1) & MSK3) ^ y.u[3]
^ (d->u[3] << SL1);
}
#else
inline static void do_recursion(w128_t *r, w128_t *a, w128_t *b, w128_t *c,
w128_t *d) {
w128_t x;
w128_t y;
lshift128(&x, a, SL2);
rshift128(&y, c, SR2);
r->u[0] = a->u[0] ^ x.u[0] ^ ((b->u[0] >> SR1) & MSK1) ^ y.u[0]
^ (d->u[0] << SL1);
r->u[1] = a->u[1] ^ x.u[1] ^ ((b->u[1] >> SR1) & MSK2) ^ y.u[1]
^ (d->u[1] << SL1);
r->u[2] = a->u[2] ^ x.u[2] ^ ((b->u[2] >> SR1) & MSK3) ^ y.u[2]
^ (d->u[2] << SL1);
r->u[3] = a->u[3] ^ x.u[3] ^ ((b->u[3] >> SR1) & MSK4) ^ y.u[3]
^ (d->u[3] << SL1);
}
#endif
#endif
#if (!defined(HAVE_ALTIVEC)) && (!defined(HAVE_SSE2))
/**
* This function fills the internal state array with pseudorandom
* integers.
*/
void FRandom::GenRandAll()
{
int i;
w128_t *r1, *r2;
r1 = &sfmt.w128[SFMT::N - 2];
r2 = &sfmt.w128[SFMT::N - 1];
for (i = 0; i < SFMT::N - POS1; i++) {
do_recursion(&sfmt.w128[i], &sfmt.w128[i], &sfmt.w128[i + POS1], r1, r2);
r1 = r2;
r2 = &sfmt.w128[i];
}
for (; i < SFMT::N; i++) {
do_recursion(&sfmt.w128[i], &sfmt.w128[i], &sfmt.w128[i + POS1 - SFMT::N], r1, r2);
r1 = r2;
r2 = &sfmt.w128[i];
}
}
/**
* This function fills the user-specified array with pseudorandom
* integers.
*
* @param array an 128-bit array to be filled by pseudorandom numbers.
* @param size number of 128-bit pseudorandom numbers to be generated.
*/
void FRandom::GenRandArray(w128_t *array, int size)
{
int i, j;
w128_t *r1, *r2;
r1 = &sfmt.w128[SFMT::N - 2];
r2 = &sfmt.w128[SFMT::N - 1];
for (i = 0; i < SFMT::N - POS1; i++) {
do_recursion(&array[i], &sfmt.w128[i], &sfmt.w128[i + POS1], r1, r2);
r1 = r2;
r2 = &array[i];
}
for (; i < SFMT::N; i++) {
do_recursion(&array[i], &sfmt.w128[i], &array[i + POS1 - SFMT::N], r1, r2);
r1 = r2;
r2 = &array[i];
}
for (; i < size - SFMT::N; i++) {
do_recursion(&array[i], &array[i - SFMT::N], &array[i + POS1 - SFMT::N], r1, r2);
r1 = r2;
r2 = &array[i];
}
for (j = 0; j < 2 * SFMT::N - size; j++) {
sfmt.w128[j] = array[j + size - SFMT::N];
}
for (; i < size; i++, j++) {
do_recursion(&array[i], &array[i - SFMT::N], &array[i + POS1 - SFMT::N], r1, r2);
r1 = r2;
r2 = &array[i];
sfmt.w128[j] = array[i];
}
}
#endif
#if defined(BIG_ENDIAN64) && !defined(ONLY64) && !defined(HAVE_ALTIVEC)
inline static void swap(w128_t *array, int size) {
int i;
DWORD x, y;
for (i = 0; i < size; i++) {
x = array[i].u[0];
y = array[i].u[2];
array[i].u[0] = array[i].u[1];
array[i].u[2] = array[i].u[3];
array[i].u[1] = x;
array[i].u[3] = y;
}
}
#endif
/**
* This function represents a function used in the initialization
* by init_by_array
* @param x 32-bit integer
* @return 32-bit integer
*/
static DWORD func1(DWORD x)
{
return (x ^ (x >> 27)) * (DWORD)1664525UL;
}
/**
* This function represents a function used in the initialization
* by init_by_array
* @param x 32-bit integer
* @return 32-bit integer
*/
static DWORD func2(DWORD x)
{
return (x ^ (x >> 27)) * (DWORD)1566083941UL;
}
/**
* This function certificate the period of 2^{MEXP}
*/
void FRandom::PeriodCertification()
{
int inner = 0;
int i, j;
DWORD work;
for (i = 0; i < 4; i++)
inner ^= sfmt.u[idxof(i)] & parity[i];
for (i = 16; i > 0; i >>= 1)
inner ^= inner >> i;
inner &= 1;
/* check OK */
if (inner == 1) {
return;
}
/* check NG, and modification */
for (i = 0; i < 4; i++) {
work = 1;
for (j = 0; j < 32; j++) {
if ((work & parity[i]) != 0) {
sfmt.u[idxof(i)] ^= work;
return;
}
work = work << 1;
}
}
}
/*----------------
PUBLIC FUNCTIONS
----------------*/
/**
* This function returns the minimum size of array used for \b
* fill_array32() function.
* @return minimum size of array used for FillArray32() function.
*/
int FRandom::GetMinArraySize32()
{
return SFMT::N32;
}
/**
* This function returns the minimum size of array used for \b
* fill_array64() function.
* @return minimum size of array used for FillArray64() function.
*/
int FRandom::GetMinArraySize64()
{
return SFMT::N64;
}
#ifndef ONLY64
/**
* This function generates and returns 32-bit pseudorandom number.
* init_gen_rand or init_by_array must be called before this function.
* @return 32-bit pseudorandom number
*/
unsigned int FRandom::GenRand32()
{
DWORD r;
assert(initialized);
if (idx >= SFMT::N32)
{
GenRandAll();
idx = 0;
}
r = sfmt.u[idx++];
return r;
}
#endif
/**
* This function generates and returns 64-bit pseudorandom number.
* init_gen_rand or init_by_array must be called before this function.
* The function gen_rand64 should not be called after gen_rand32,
* unless an initialization is again executed.
* @return 64-bit pseudorandom number
*/
QWORD FRandom::GenRand64()
{
#if defined(BIG_ENDIAN64) && !defined(ONLY64)
DWORD r1, r2;
#else
QWORD r;
#endif
assert(initialized);
assert(idx % 2 == 0);
if (idx >= SFMT::N32)
{
GenRandAll();
idx = 0;
}
#if defined(BIG_ENDIAN64) && !defined(ONLY64)
r1 = sfmt.u[idx];
r2 = sfmt.u[idx + 1];
idx += 2;
return ((QWORD)r2 << 32) | r1;
#else
r = sfmt.u64[idx / 2];
idx += 2;
return r;
#endif
}
#ifndef ONLY64
/**
* This function generates pseudorandom 32-bit integers in the
* specified array[] by one call. The number of pseudorandom integers
* is specified by the argument size, which must be at least 624 and a
* multiple of four. The generation by this function is much faster
* than the following gen_rand function.
*
* For initialization, init_gen_rand or init_by_array must be called
* before the first call of this function. This function can not be
* used after calling gen_rand function, without initialization.
*
* @param array an array where pseudorandom 32-bit integers are filled
* by this function. The pointer to the array must be \b "aligned"
* (namely, must be a multiple of 16) in the SIMD version, since it
* refers to the address of a 128-bit integer. In the standard C
* version, the pointer is arbitrary.
*
* @param size the number of 32-bit pseudorandom integers to be
* generated. size must be a multiple of 4, and greater than or equal
* to (MEXP / 128 + 1) * 4.
*
* @note \b memalign or \b posix_memalign is available to get aligned
* memory. Mac OSX doesn't have these functions, but \b malloc of OSX
* returns the pointer to the aligned memory block.
*/
void FRandom::FillArray32(DWORD *array, int size)
{
assert(initialized);
assert(idx == SFMT::N32);
assert(size % 4 == 0);
assert(size >= SFMT::N32);
GenRandArray((w128_t *)array, size / 4);
idx = SFMT::N32;
}
#endif
/**
* This function generates pseudorandom 64-bit integers in the
* specified array[] by one call. The number of pseudorandom integers
* is specified by the argument size, which must be at least 312 and a
* multiple of two. The generation by this function is much faster
* than the following gen_rand function.
*
* For initialization, init_gen_rand or init_by_array must be called
* before the first call of this function. This function can not be
* used after calling gen_rand function, without initialization.
*
* @param array an array where pseudorandom 64-bit integers are filled
* by this function. The pointer to the array must be "aligned"
* (namely, must be a multiple of 16) in the SIMD version, since it
* refers to the address of a 128-bit integer. In the standard C
* version, the pointer is arbitrary.
*
* @param size the number of 64-bit pseudorandom integers to be
* generated. size must be a multiple of 2, and greater than or equal
* to (MEXP / 128 + 1) * 2
*
* @note \b memalign or \b posix_memalign is available to get aligned
* memory. Mac OSX doesn't have these functions, but \b malloc of OSX
* returns the pointer to the aligned memory block.
*/
void FRandom::FillArray64(QWORD *array, int size)
{
assert(initialized);
assert(idx == SFMT::N32);
assert(size % 2 == 0);
assert(size >= SFMT::N64);
GenRandArray((w128_t *)array, size / 2);
idx = SFMT::N32;
#if defined(BIG_ENDIAN64) && !defined(ONLY64)
swap((w128_t *)array, size / 2);
#endif
}
/**
* This function initializes the internal state array with a 32-bit
* integer seed.
*
* @param seed a 32-bit integer used as the seed.
*/
void FRandom::InitGenRand(DWORD seed)
{
int i;
sfmt.u[idxof(0)] = seed;
for (i = 1; i < SFMT::N32; i++)
{
sfmt.u[idxof(i)] = 1812433253UL * (sfmt.u[idxof(i - 1)]
^ (sfmt.u[idxof(i - 1)] >> 30))
+ i;
}
idx = SFMT::N32;
PeriodCertification();
#ifndef NDEBUG
initialized = 1;
#endif
}
/**
* This function initializes the internal state array,
* with an array of 32-bit integers used as the seeds
* @param init_key the array of 32-bit integers, used as a seed.
* @param key_length the length of init_key.
*/
void FRandom::InitByArray(DWORD *init_key, int key_length)
{
int i, j, count;
DWORD r;
int lag;
int mid;
int size = SFMT::N * 4;
if (size >= 623) {
lag = 11;
} else if (size >= 68) {
lag = 7;
} else if (size >= 39) {
lag = 5;
} else {
lag = 3;
}
mid = (size - lag) / 2;
memset(&sfmt, 0x8b, sizeof(sfmt));
if (key_length + 1 > SFMT::N32) {
count = key_length + 1;
} else {
count = SFMT::N32;
}
r = func1(sfmt.u[idxof(0)] ^ sfmt.u[idxof(mid)] ^ sfmt.u[idxof(SFMT::N32 - 1)]);
sfmt.u[idxof(mid)] += r;
r += key_length;
sfmt.u[idxof(mid + lag)] += r;
sfmt.u[idxof(0)] = r;
count--;
for (i = 1, j = 0; (j < count) && (j < key_length); j++)
{
r = func1(sfmt.u[idxof(i)] ^ sfmt.u[idxof((i + mid) % SFMT::N32)] ^ sfmt.u[idxof((i + SFMT::N32 - 1) % SFMT::N32)]);
sfmt.u[idxof((i + mid) % SFMT::N32)] += r;
r += init_key[j] + i;
sfmt.u[idxof((i + mid + lag) % SFMT::N32)] += r;
sfmt.u[idxof(i)] = r;
i = (i + 1) % SFMT::N32;
}
for (; j < count; j++)
{
r = func1(sfmt.u[idxof(i)] ^ sfmt.u[idxof((i + mid) % SFMT::N32)] ^ sfmt.u[idxof((i + SFMT::N32 - 1) % SFMT::N32)]);
sfmt.u[idxof((i + mid) % SFMT::N32)] += r;
r += i;
sfmt.u[idxof((i + mid + lag) % SFMT::N32)] += r;
sfmt.u[idxof(i)] = r;
i = (i + 1) % SFMT::N32;
}
for (j = 0; j < SFMT::N32; j++)
{
r = func2(sfmt.u[idxof(i)] + sfmt.u[idxof((i + mid) % SFMT::N32)] + sfmt.u[idxof((i + SFMT::N32 - 1) % SFMT::N32)]);
sfmt.u[idxof((i + mid) % SFMT::N32)] ^= r;
r -= i;
sfmt.u[idxof((i + mid + lag) % SFMT::N32)] ^= r;
sfmt.u[idxof(i)] = r;
i = (i + 1) % SFMT::N32;
}
idx = SFMT::N32;
PeriodCertification();
#ifndef NDEBUG
initialized = 1;
#endif
}

120
src/sfmt/SFMT.h Normal file
View file

@ -0,0 +1,120 @@
/**
* @file SFMT.h
*
* @brief SIMD oriented Fast Mersenne Twister(SFMT) pseudorandom
* number generator
*
* @author Mutsuo Saito (Hiroshima University)
* @author Makoto Matsumoto (Hiroshima University)
*
* Copyright (C) 2006, 2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
* University. All rights reserved.
*
* The new BSD License is applied to this software.
* see LICENSE.txt
*
* @note We assume that your system has inttypes.h. If your system
* doesn't have inttypes.h, you have to typedef uint32_t and uint64_t,
* and you have to define PRIu64 and PRIx64 in this file as follows:
* @verbatim
typedef unsigned int uint32_t
typedef unsigned long long uint64_t
#define PRIu64 "llu"
#define PRIx64 "llx"
@endverbatim
* uint32_t must be exactly 32-bit unsigned integer type (no more, no
* less), and uint64_t must be exactly 64-bit unsigned integer type.
* PRIu64 and PRIx64 are used for printf function to print 64-bit
* unsigned int and 64-bit unsigned int in hexadecimal format.
*/
#ifndef SFMT_H
#define SFMT_H
#ifndef PRIu64
#if defined(_MSC_VER) || defined(__BORLANDC__)
#define PRIu64 "I64u"
#define PRIx64 "I64x"
#else
#define PRIu64 "llu"
#define PRIx64 "llx"
#endif
#endif
#if defined(__GNUC__)
#define ALWAYSINLINE __attribute__((always_inline))
#else
#define ALWAYSINLINE
#endif
#if defined(_MSC_VER)
#if _MSC_VER >= 1200
#define PRE_ALWAYS __forceinline
#else
#define PRE_ALWAYS inline
#endif
#else
#define PRE_ALWAYS inline
#endif
/*------------------------------------------------------
128-bit SIMD data type for Altivec, SSE2 or standard C
------------------------------------------------------*/
#if defined(HAVE_ALTIVEC)
#if !defined(__APPLE__)
#include <altivec.h>
#endif
/** 128-bit data structure */
union w128_t {
vector unsigned int s;
DWORD u[4];
QWORD u64[2];
};
#elif defined(HAVE_SSE2)
#include <emmintrin.h>
/** 128-bit data structure */
union w128_t {
__m128i si;
DWORD u[4];
QWORD u64[2];
};
#else
/** 128-bit data structure */
union w128_t {
DWORD u[4];
QWORD u64[2];
};
#endif
/*-----------------
BASIC DEFINITIONS
-----------------*/
/** Mersenne Exponent. The period of the sequence
* is a multiple of 2^MEXP-1. */
#if !defined(MEXP)
// [RH] The default MEXP for SFMT is 19937, but since that consumes
// quite a lot of space for state, and we're using lots of different
// RNGs, default to something smaller.
#define MEXP 607
#endif
namespace SFMT
{
/** SFMT generator has an internal state array of 128-bit integers,
* and N is its size. */
enum { N = MEXP / 128 + 1 };
/** N32 is the size of internal state array when regarded as an array
* of 32-bit integers.*/
enum { N32 = N * 4 };
/** N64 is the size of internal state array when regarded as an array
* of 64-bit integers.*/
enum { N64 = N * 2 };
};
#endif

4
src/version.h
View file

@ -54,7 +54,7 @@
// Version identifier for network games.
// Bump it every time you do a release unless you're certain you
// didn't change anything that will affect sync.
#define NETGAMEVERSION 221
#define NETGAMEVERSION 222
// Version stored in the ini's [LastRun] section.
// Bump it if you made some configuration change that you want to
@ -75,7 +75,7 @@
// SAVESIG should match SAVEVER.
// MINSAVEVER is the minimum level snapshot version that can be loaded.
#define MINSAVEVER 1452
#define MINSAVEVER 1507
#if SVN_REVISION_NUMBER < MINSAVEVER
// Never write a savegame with a version lower than what we need

41
src/win32/i_system.cpp
View file

@ -27,6 +27,7 @@
#include <direct.h>
#include <string.h>
#include <process.h>
#include <time.h>
#include <stdarg.h>
#include <sys/types.h>
@ -36,6 +37,7 @@
#include <windows.h>
#include <mmsystem.h>
#include <richedit.h>
#include <wincrypt.h>
#define USE_WINDOWS_DWORD
#include "hardware.h"
@ -564,7 +566,7 @@ void I_PrintStr (const char *cp)
int bpos = 0;
CHARRANGE selection;
CHARRANGE endselection;
LONG lines_before, lines_after;
LONG lines_before = 0, lines_after;
CHARFORMAT format;
if (edit != NULL)
@ -876,10 +878,39 @@ FString I_GetSteamPath()
return path;
}
long long QueryPerfCounter()
// Return a random seed, preferably one with lots of entropy.
unsigned int I_MakeRNGSeed()
{
LARGE_INTEGER counter;
unsigned int seed;
QueryPerformanceCounter(&counter);
return counter.QuadPart;
// If RtlGenRandom is available, use that to avoid increasing the
// working set by pulling in all of the crytographic API.
HMODULE advapi = GetModuleHandle("advapi32.dll");
if (advapi != NULL)
{
BOOLEAN (APIENTRY *RtlGenRandom)(void *, ULONG) =
(BOOLEAN (APIENTRY *)(void *, ULONG))GetProcAddress(advapi, "SystemFunction036");
if (RtlGenRandom != NULL)
{
if (RtlGenRandom(&seed, sizeof(seed)))
{
return seed;
}
}
}
// Use the full crytographic API to produce a seed. If that fails,
// time() is used as a fallback.
HCRYPTPROV prov;
if (!CryptAcquireContext(&prov, NULL, MS_DEF_PROV, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
{
return (unsigned int)time(NULL);
}
if (!CryptGenRandom(prov, sizeof(seed), (BYTE *)&seed))
{
seed = (unsigned int)time(NULL);
}
CryptReleaseContext(prov, 0);
return seed;
}

3
src/win32/i_system.h
View file

@ -68,6 +68,9 @@ extern void (*I_FreezeTime) (bool frozen);
fixed_t I_GetTimeFrac (uint32 *ms);
// Return a seed value for the RNG.
unsigned int I_MakeRNGSeed();
//
// Called by D_DoomLoop,

64
zdoom.vcproj
View file

@ -6294,6 +6294,70 @@
</FileConfiguration>
</File>
</Filter>
<Filter
Name="SFMT"
>
<File
RelativePath=".\src\sfmt\SFMT-alti.h"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT-params.h"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT-params11213.h"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT-params1279.h"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT-params132049.h"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT-params19937.h"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT-params216091.h"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT-params2281.h"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT-params4253.h"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT-params44497.h"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT-params607.h"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT-params86243.h"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT-sse2.h"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT.cpp"
>
</File>
<File
RelativePath=".\src\sfmt\SFMT.h"
>
</File>
</Filter>
</Files>
<Globals>
</Globals>