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