dummy.c
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	/* program to generate dummy data set */
	/* Mike Uttormark 7/16/92 */
	/* Sandia Nat'l Labs 1421 */
	/* On leave from University of Wisconsin--Madison */

	#include <math.h>
	#include <stdio.h>
	#include <stdlib.h>

	#define RANGE 5.0
	#define STEPS 2000
	#define PI 3.14159
	#define S 50

	#ifdef MISSINGDEFS
	int printf(char *, ...);
	#endif

	int main(int argc, char **argv);

	int main(int argc, char **argv)
	{
	int i, j, step, npart;
	int nsteps;

	if (argc < 2)
	nsteps = STEPS;
	else
	nsteps = atoi(argv[1]);

	if (argc < 3)
	npart = 1;
	else
	npart = atoi(argv[2]);

	for(step = 0; step < nsteps; step++) {

	printf("ITEM: TIME\n%g\n", (float) step);

	if (step == 0) {
	printf("ITEM: BOUNDS\n");
	for (i = 3; i; i--)
	printf("%g, %g\n", -RANGE, RANGE);
	}
	printf("ITEM: POSITIONS\n");

	for( j = 0; j < npart; j++)
	printf("%i, %i, %g, %g, %g\n",
	j+1,
	1 + j%4,
	RANGEsin(2PI*(step+j)/S),
	RANGEcos(0.25PI*(step+j)/S),
	RANGEsin(5PI*(step+j)/S));

	if (npart > 1) {
	printf("ITEM: BONDS\n");
	for ( j = 0; j < npart-1; j++)
	printf("%i %i %i\n", 1 + j%4, j+1, j+2);
	}
	}
	}