dummy.c
3b4412d782eflammm-master-deprecated

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);
			}
			}
			}