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- /******************************************************************************
- Online C Compiler.
- Code, Compile, Run and Debug C program online.
- Write your code in this editor and press "Run" button to compile and execute it.
- *******************************************************************************/
- #include <stdio.h>
- /* Period parameters */
- #define N 624
- #define M 397
- #define MATRIX_A 0x9908b0dfUL /* constant vector a */
- #define UPPER_MASK 0x80000000UL /* most significant w-r bits */
- #define LOWER_MASK 0x7fffffffUL /* least significant r bits */
- static unsigned long mt[N]; /* the array for the state vector */
- static int mti=N+1; /* mti==N+1 means mt[N] is not initialized */
- void init_genrand(unsigned long s); //unsigned long seed;
- void init_by_array(unsigned long init_key[], int key_length);
- unsigned long genrand_int32(void);
- int main()
- {
- unsigned int seed = 0x0F0E0E65;
- unsigned int MULT = 0x41C64E6D, ADD = 0x6073;
- int loop, loopNb = 4;
- int rng = seed;
- for(loop = 0; loop < loopNb; loop++){
- rng = rng * MULT + ADD;
- }
- printf("LID: %5d\n",rng/65536);
- init_genrand(seed);
- unsigned long mersenne;
- int mersenneLoopNb = 2;
- for(loop = 0; loop < mersenneLoopNb; loop++){
- mersenne = genrand_int32();
- }
- printf("TID: %5d\n", mersenne%65536);
- return 0;
- }
- /* initializes mt[N] with a seed */
- void init_genrand(unsigned long s)
- {
- mt[0]= s & 0xffffffffUL;
- for (mti=1; mti<N; mti++) {
- mt[mti] =
- (1812433253UL * (mt[mti-1] ^ (mt[mti-1] >> 30)) + mti);
- /* See Knuth TAOCP Vol2. 3rd Ed. P.106 for multiplier. */
- /* In the previous versions, MSBs of the seed affect */
- /* only MSBs of the array mt[]. */
- /* 2002/01/09 modified by Makoto Matsumoto */
- mt[mti] &= 0xffffffffUL;
- /* for >32 bit machines */
- }
- }
- /* initialize by an array with array-length */
- /* init_key is the array for initializing keys */
- /* key_length is its length */
- /* slight change for C++, 2004/2/26 */
- void init_by_array(unsigned long init_key[], int key_length)
- {
- int i, j, k;
- init_genrand(19650218UL);
- i=1; j=0;
- k = (N>key_length ? N : key_length);
- for (; k; k--) {
- mt[i] = (mt[i] ^ ((mt[i-1] ^ (mt[i-1] >> 30)) * 1664525UL))
- + init_key[j] + j; /* non linear */
- mt[i] &= 0xffffffffUL; /* for WORDSIZE > 32 machines */
- i++; j++;
- if (i>=N) { mt[0] = mt[N-1]; i=1; }
- if (j>=key_length) j=0;
- }
- for (k=N-1; k; k--) {
- mt[i] = (mt[i] ^ ((mt[i-1] ^ (mt[i-1] >> 30)) * 1566083941UL))
- - i; /* non linear */
- mt[i] &= 0xffffffffUL; /* for WORDSIZE > 32 machines */
- i++;
- if (i>=N) { mt[0] = mt[N-1]; i=1; }
- }
- mt[0] = 0x80000000UL; /* MSB is 1; assuring non-zero initial array */
- }
- /* generates a random number on [0,0xffffffff]-interval */
- unsigned long genrand_int32(void)
- {
- unsigned long y;
- static unsigned long mag01[2]={0x0UL, MATRIX_A};
- /* mag01[x] = x * MATRIX_A for x=0,1 */
- if (mti >= N) { /* generate N words at one time */
- int kk;
- if (mti == N+1) /* if init_genrand() has not been called, */
- init_genrand(5489UL); /* a default initial seed is used */
- for (kk=0;kk<N-M;kk++) {
- y = (mt[kk]&UPPER_MASK)|(mt[kk+1]&LOWER_MASK);
- mt[kk] = mt[kk+M] ^ (y >> 1) ^ mag01[y & 0x1UL];
- }
- for (;kk<N-1;kk++) {
- y = (mt[kk]&UPPER_MASK)|(mt[kk+1]&LOWER_MASK);
- mt[kk] = mt[kk+(M-N)] ^ (y >> 1) ^ mag01[y & 0x1UL];
- }
- y = (mt[N-1]&UPPER_MASK)|(mt[0]&LOWER_MASK);
- mt[N-1] = mt[M-1] ^ (y >> 1) ^ mag01[y & 0x1UL];
- mti = 0;
- }
- y = mt[mti++];
- /* Tempering */
- y ^= (y >> 11);
- y ^= (y << 7) & 0x9d2c5680UL;
- y ^= (y << 15) & 0xefc60000UL;
- y ^= (y >> 18);
- return y;
- }
- /* generates a random number on [0,0x7fffffff]-interval */
- long genrand_int31(void)
- {
- return (long)(genrand_int32()>>1);
- }
- /* generates a random number on [0,1]-real-interval */
- double genrand_real1(void)
- {
- return genrand_int32()*(1.0/4294967295.0);
- /* divided by 2^32-1 */
- }
- /* generates a random number on [0,1)-real-interval */
- double genrand_real2(void)
- {
- return genrand_int32()*(1.0/4294967296.0);
- /* divided by 2^32 */
- }
- /* generates a random number on (0,1)-real-interval */
- double genrand_real3(void)
- {
- return (((double)genrand_int32()) + 0.5)*(1.0/4294967296.0);
- /* divided by 2^32 */
- }
- /* generates a random number on [0,1) with 53-bit resolution*/
- double genrand_res53(void)
- {
- unsigned long a=genrand_int32()>>5, b=genrand_int32()>>6;
- return(a*67108864.0+b)*(1.0/9007199254740992.0);
- }
- /* These real versions are due to Isaku Wada, 2002/01/09 added */
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