/***************************************************************************** * btree-mem-C/random.c * * COPYRIGHT (c) 1995, 1997 by David Van Wagner ALL RIGHTS RESERVED * Source and executables may be distributed under the terms of the GNU * General Public License version 2, see the file COPYING for details. * * davevw@alumni.cse.ucsc.edu * http://alumni.cse.ucsc.edu/~davevw/ *****************************************************************************/#include <stdlib.h>#include <stdio.h>#include <memory.h>#include <math.h>#include <time.h>#include "my_assert.h"#ifndef RAND_MAX#define RAND_MAX ((unsigned long)(2<<30))-1#endif#define random_int(x) (int)((double)(rand())*x/(double)((unsigned long)RAND_MAX+1))int main(int argc, char *argv[]){	long data[10000];	const int count=sizeof(data)/sizeof(*data);	int i;	if (argc > 1)		srand(atoi(argv[1]));	/* initialize the data */	for (i=0; i<count; ++i) {		data[i] =i;	}	/* randomize the data via swapping each element with a random position */	for (i=0; i<count; ++i) {		long temp;		int swap = random_int(10000);		if (swap < 0 || swap >= 10000)			printf("swap = %d\n", swap);		assert(swap >=0 && swap <10000);		temp=data[swap];		data[swap]=data[i];		data[i]=temp;	}	for (i=0; i<count; ++i)		printf("%ld\n",data[i]);	return 0;}