Subversion Repositories an-fpga-implementation-of-low-latency-noc-based-mpsoc

// a simple delay function

void delay ( unsigned int num ){

        while (num>0){

                num--;

                nop(); // asm volatile ("nop");

        }

        return;

}

#ifndef RANDOM_H

        #define RANDOM_H

// KISS is one random number generator according to three numbers.

static unsigned int x=123456789,y=234567891,z=345678912,w=456789123,c=0;

unsigned int JKISS32() {

    unsigned int t;

    y ^= (y<<5); y ^= (y>>7); y ^= (y<<22);

    t = z+w+c; z = w; c = t < 0; w = t&2147483647;

    x += 1411392427;

    return x + y + w;

}

unsigned int rand(void){

        return JKISS32();

}

void srand(unsigned int seed){

        x^=seed; y+=seed; z^=seed; w-=seed;

}

#endif