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27 lines
609 B
C
27 lines
609 B
C
#include <stdio.h>
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#include <math.h>
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#include <stdlib.h>
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static unsigned long Q[4096], c = 362436;
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/* choose random initial c<809430660 and */
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/* 4096 random 32-bit integers for Q[] */
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unsigned long mwc(void)
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{
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unsigned long long t, a = 18782LL;
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static unsigned long i = 4095;
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unsigned long x, r = 0xfffffffe;
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i= (i+1)&4095;
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t = a * Q[i] + c;
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c=(t >> 32);
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x = t + c;
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if(x < c)
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{
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x++;
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c++;
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}
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return (Q[i] = r - x);
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}
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int main(void)
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{
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printf("\nRandom Number generated : %lld\n", mwc());
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return 0;
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} |