/*
** sbnr.c -- area/speed estimation, extrapolates data from actual layouts
**	- performs initializtation and overall control of estimation
**	- area estimation generation for entire layout, SBNR algorithm
**		Joseph B. Evans, 1/29/89
*/

#include <stdio.h>
#include <math.h>
#include "estimate.h"

#define CONV 1000000.		/* convert from sq microns to sq mm */

main(argc,argv)
char **argv;
int argc;
{
	double area,time;
	double line = DEF_PR;
	int minbits = MINBITS;
	int maxbits = MAXBITS;
	FILE *fp_a,*fp_t;
	char **targv;
	int targc;

	if (argc == 3) {
		taps = atoi(argv[1]);
		q.data = atoi(argv[2]);
	} else if (argc == 4) {
		taps = atoi(argv[1]);
		q.data = atoi(argv[2]);
		line = atof(argv[3]);
	} else {
		printf("usage: %s taps data_bits [line_width]\n",argv[0]);
		exit(1);
	}
	initialize(line);
	estimate(&area,&time);
/*
	printf("\nArea/Speed Estimates\n");
	printf("process: single level metal, poly, %g microns\n",line);
	printf("%d taps, %d data bits\n",taps,q.data);
	printf("area = %g sq mm\tcycle time = %g ns\n\n",area/CONV,time);
*/
	printf("%g\t%g\n",area/CONV,time);
}

estimate(area,time)
double *area,*time;
{
	struct pe systolic;
	struct pe glue;

	/* systolic cells */
	systolic.area = 25.*X_GATE*Y_GATE + 3.*X_DFF*Y_DFF;
	systolic.time = 7.*T_GATE + T_DFF;

	glue.area = 30.*X_GATE*Y_GATE + X_FA*Y_FA;
	glue.time = 5.*T_GATE;

	*area = (double)((2*taps+1)*q.data)*systolic.area + glue.area;
	*time = (double)(3*q.data+1)*systolic.time + glue.time;
}