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Remove unused fast random stuff.

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git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@2544 8092fc87-c524-0410-9efc-e669fe64eaf9
This commit is contained in:
meep-eep
2006-11-25 20:59:06 +00:00
parent db03a8c6c3
commit 55a56221b2
4 changed files with 4 additions and 144 deletions
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sc2/src/sc2code/libs/math/Makeinfo
+1 -1
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@@ -1 +1 @@
uqm_CFILES="fastrand.c random.c sqrt.c"
uqm_CFILES="random.c sqrt.c"
sc2/src/sc2code/libs/math/fastrand.c
-125
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@@ -1,125 +0,0 @@
//Copyright Paul Reiche, Fred Ford. 1992-2002
/*
* This program 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 program 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "mthintrn.h"
#include "random.h" /* get the externs for error checking */
/* ----------------------------GLOBAL DATA-------------------------------- */
DWORD random_table[TABLE_SIZE];
COUNT fast_index = 0; /* fast random cycling index */
/* ----------------------------PROTOTYPES--------------------------------- */
DWORD indexed_random_table(COUNT index);
void reseed_fast_random(void);
DWORD fast_random(void);
DWORD seed_fast_random(DWORD seed);
/*****************************************************************************
* FUNC: DWORD seed_fast_random(DWORD seed)
*
* DESC:generate a small table of random numbers for later use by fast_random()
*
* NOTES: the table has a prime number of entries
*
* HISTORY: Created By Robert Leyland
*
*****************************************************************************/
DWORD
seed_fast_random(DWORD seed)
{
DWORD retval;
COUNT index;
retval = TFB_SeedRandom(seed);
for( index = 0; index < TABLE_SIZE; index++ )
random_table[index] = TFB_Random();
fast_index = 0; /* must be set to the start of the table for
repeatability... */
return (retval);
}
/*****************************************************************************
* FUNC: DWORD fast_random()
*
* DESC:return the next random number from the random number table
*
* NOTES:
*
* HISTORY: Created By Robert Leyland
*
*****************************************************************************/
DWORD
fast_random(void)
{
fast_index++;
if( fast_index == TABLE_SIZE )
fast_index = 0;
return( random_table[fast_index] );
}
/*****************************************************************************
* FUNC: void reseed_fast_random()
*
* DESC:shifts the table pointer by calling the "real" random
*
* NOTES:
*
* HISTORY: Created By Robert Leyland
*
*****************************************************************************/
void
reseed_fast_random(void)
{
fast_index = (COUNT)(TFB_Random() % TABLE_SIZE);
}
/*****************************************************************************
* FUNC: DWORD indexed_random_table(COUNT index)
*
* DESC:return a "random" number from the random number table, as indexed
* for repeatability
*
* NOTES:used by texturing functions
*
* HISTORY: Created By Robert Leyland
*
*****************************************************************************/
DWORD
indexed_random_table(COUNT index)
{
if( index > TABLE_SIZE ) /* only do % if really needed */
index = index % TABLE_SIZE;
return(random_table[index]);
}
sc2/src/sc2code/libs/math/random.h
+2 -16
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@@ -28,27 +28,13 @@
/* ----------------------------DEFINES------------------------------------ */
#ifndef SLOW_N_STUPID
#define TABLE_SIZE 1117 /* a "nice" prime number */
#define _FAST_ fast_random()
#else /* FAST_N_UGLY */
#define TABLE_SIZE ( (1 << 10) - 1 )
#define _FAST_ ( random_table[ fast_index++ & TABLE_SIZE ] )
#endif
#define FASTRAND(n) ( (int) ( (unsigned int)_FAST_ % (n) ) )
#define SFASTRAND(n) ( (int)_FAST_ % (n) )
#define AND_FASTRAND(n) ( (int)_FAST_ & (n) )
#define RAND(n) ( (int) ( (unsigned int)TFB_Random() % (n) ) )
#define SRAND(n) ( (int)TFB_Random() % (n) )
#define AND_RAND(n) ( (int)TFB_Random() & (n) )
#define INDEXED_RANDOM(x) (random_table[x])
/* ----------------------------GLOBALS/EXTERNS---------------------------- */
extern DWORD random_table[TABLE_SIZE];
extern COUNT fast_index; /* fast random cycling index */
DWORD TFB_SeedRandom (DWORD seed);
DWORD TFB_Random (void);
sc2/src/sc2code/libs/mathlib.h
+1 -2
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@@ -20,9 +20,8 @@
#define _MATHLIB_H
#include "compiler.h"
#include "math/random.h"
extern DWORD TFB_SeedRandom (DWORD seed);
extern DWORD TFB_Random (void);
extern COUNT square_root (DWORD value);
#endif /* _MATHLIB_H */