forked from KolibriOS/kolibrios
4e9602a915
New lib: lexer.h git-svn-id: svn://kolibrios.org@5598 a494cfbc-eb01-0410-851d-a64ba20cac60
83 lines
1.6 KiB
C
83 lines
1.6 KiB
C
#ifndef INCLUDE_RANDOM_H
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#define INCLUDE_RANDOM_H
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#ifndef INCLUDE_KOLIBRI_H
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#include "../lib/kolibri.h"
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#endif
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#define MASK_RAND 123456789
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#define IQ_RAND 12773
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#define IA_RAND 16807
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#define IR_RAND 2836
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#define IM_RAND 2147483647
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#define AM_RAND (1./2147483647)
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inline fastcall int random( ECX)
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// get pseudo-random number - ïîëó÷èòü ïñåâäîñëó÷àéíîå ÷èñëî
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{
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$push ebx
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$rdtsc // eax & edx
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$xor eax,edx
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$not eax
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EBX = __generator;
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$ror ebx,3
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$xor ebx,0xdeadbeef
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EBX += EAX;
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__generator = EBX;
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EAX += EBX;
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EAX = EAX % ECX;
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$pop ebx
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}
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inline long unirand0(void)
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{
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long k,ans,tmp,save;
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save = __generator;
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__generator^=MASK_RAND; /* avoid __generator==0 */
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k=__generator/IQ_RAND;
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tmp=__generator-k*IQ_RAND;
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__generator*=IA_RAND*tmp;
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__generator-=IR_RAND*k;
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if(__generator<0) __generator+=IM_RAND;
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if(save == __generator) return unirand0();
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ans=__generator;
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__generator^=MASK_RAND; /* restore unmasked dummy */
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return ans;
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}
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:long RAND_A,RAND_C,RAND_TMP;
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inline long rand(signed long x1,x2)
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{
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long tmp,xx;
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RAND_A = __generator;
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__generator = RAND_A*__generator+RAND_C;
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RAND_C = __generator^RAND_A;
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RAND_C>>=1;
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RAND_A<<=1;
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__generator^=RAND_A;
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xx=x2;
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if(x1<0)xx+=-x1;
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tmp = __generator%xx;
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if(tmp<0)tmp=-tmp;
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tmp+=x1;
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return tmp;
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}
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inline fastcall randomize()
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// initialize random number __generator - èíèöèàëèçèðîâàòü ãåíåðàòîð ñëó÷àéíûõ ÷èñåë
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{
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asm
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{
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mov eax,3
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int 0x40
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ror eax,16
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}
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//if(EAX == __generator)return randomize();
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__generator = EAX;
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}
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#endif |