| 0,0 → 1,76 |
|---|
| ; C4 |
| ; Copyright (c) 2002 Thomas Mathys |
| ; killer@vantage.ch |
| ; |
| ; This file is part of C4. |
| ; |
| ; C4 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. |
| ; |
| ; C4 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 C4; if not, write to the Free Software |
| ; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| |
| %ifndef _RNG_INC |
| %define _RNG_INC |
| |
| section .data |
| |
| |
| ; random seed |
| seed dd 0 |
| |
| |
| |
| section .text |
| |
| |
| ;********************************************************** |
| ; randomize |
| ; initialize random number generator. |
| ; initialization is done using the get system clock syscall |
| ; |
| ; input : nothing |
| ; output : nothing |
| ; destroys : nothing |
| ;********************************************************** |
| randomize: |
| push eax |
| mov eax,MOS_SC_GETSYSCLOCK |
| int 0x40 |
| mov [seed],eax |
| pop eax |
| ret |
| |
| |
| |
| ;********************************************************** |
| ; rand |
| ; return an unsigned 32 bit "random" number |
| ; |
| ; input : nothing |
| ; output : eax = unsigned 32 bit random number |
| ; destroys : nothing |
| ;********************************************************** |
| rand: |
| pushfd |
| push edx |
| mov eax,32719 |
| mul dword [seed] |
| add eax,123 |
| xchg al,ah |
| rol eax,16 |
| xchg al,ah |
| mov [seed],eax |
| pop edx |
| popfd |
| ret |
| |
| %endif |
| Property changes: |
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| Added: svn:eol-style |
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| +native |
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| \ No newline at end of property |
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