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kolibrios/programs/cmm/lib/random.h
Kirill Lipatov (Leency) 263a9a4c7d C Minus Minus programs in one location, one library, uploaded src new @rb, new end, new notify. dicty, tmpdisk and browser moved
git-svn-id: svn://kolibrios.org@3067 a494cfbc-eb01-0410-851d-a64ba20cac60
2012-11-26 15:26:15 +00:00

55 lines
1.5 KiB
C

/*******************************************************************************
MenuetOS MineSweeper
Copyright (C) 2003 Ivan Poddubny
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
*******************************************************************************/
dword generator; // random number generator - äëÿ ãåíåðàöèè ñëó÷àéíûõ ÷èñåë
inline fastcall int random( ECX)
// get pseudo-random number - ïîëó÷èòü ïñåâäîñëó÷àéíîå ÷èñëî
{
$push ebx
$rdtsc // eax & edx
$xor eax,edx
$not eax
EBX = generator;
$ror ebx,3
$xor ebx,0xdeadbeef
EBX += EAX;
generator = EBX;
EAX += EBX;
EAX = EAX % ECX;
$pop ebx
}
inline fastcall randomize()
// initialize random number generator - èíèöèàëèçèðîâàòü ãåíåðàòîð ñëó÷àéíûõ ÷èñåë
{
asm
{
mov eax,3
int 0x40
ror eax,16
}
generator = EAX;
}