Category : Recently Uploaded Files
Archive   : OXCC1432.ZIP
Filename : LRANDOM.C

 
Output of file : LRANDOM.C contained in archive : OXCC1432.ZIP
/* ================ Random Number Generator from BSD ======================= */

/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
* modified by NORMAN D. CULVER Oxbow Software
* Redistribution and use in source and binary forms are permitted
* provided that: (1) source distributions retain this entire copyright
* notice and comment, and (2) distributions including binaries display
* the following acknowledgement: ``This product includes software
* developed by the University of California, Berkeley and its contributors''
* in the documentation or other materials provided with the distribution
* and in all advertising materials mentioning features or use of this
* software. Neither the name of the 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

static long randtbl[32] = { 0L,
0x9a319039L, 0x32d9c024L, 0x9b663182L, 0x5da1f342L,
0xde3b81e0L, 0xdf0a6fb5L, 0xf103bc02L, 0x48f340fbL,
0x7449e56bL, 0xbeb1dbb0L, 0xab5c5918L, 0x946554fdL,
0x8c2e680fL, 0xeb3d799fL, 0xb11ee0b7L, 0x2d436b86L,
0xda672e2aL, 0x1588ca88L, 0xe369735dL, 0x904f35f7L,
0xd7158fd6L, 0x6fa6f051L, 0x616e6b96L, 0xac94efdcL,
0x36413f93L, 0xc622c298L, 0xf5a42ab8L, 0x8a88d77bL,
0xf5ad9d0eL, 0x8999220bL, 0x27fb47b9L
};

static long *fptr = &randtbl[4];
static long *rptr = &randtbl[1];

/*
* Returns a really good 31-bit random number.
*/
static long
lrandom()
{
long i;

*fptr += *rptr;
i = (*fptr >> 1) & 0x7fffffffUL; /* chucking least random bit */
if(++fptr > &randtbl[31])
{
fptr = &randtbl[1];
++rptr;
}
else
{
if(++rptr > &randtbl[31])
rptr = &randtbl[1];
}
return( i );
}
/* ========================= END Random Number Generator ==================== */



  3 Responses to “Category : Recently Uploaded Files
Archive   : OXCC1432.ZIP
Filename : LRANDOM.C

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/