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-/*
- * Simple test driver for MPI library
- *
- * Test 3a: Multiplication vs. squaring timing test
- *
- * ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
- *
- * The Initial Developer of the Original Code is
- * Michael J. Fromberger.
- * Portions created by the Initial Developer are Copyright (C) 1998
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-/* $Id$ */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <limits.h>
-
-#include <time.h>
-
-#include "mpi.h"
-#include "mpprime.h"
-
-int main(int argc, char *argv[])
-{
- int ix, num, prec = 8;
- double d1, d2;
- clock_t start, finish;
- time_t seed;
- mp_int a, c, d;
-
- seed = time(NULL);
-
- if(argc < 2) {
- fprintf(stderr, "Usage: %s <num-tests> [<precision>]\n", argv[0]);
- return 1;
- }
-
- if((num = atoi(argv[1])) < 0)
- num = -num;
-
- if(!num) {
- fprintf(stderr, "%s: must perform at least 1 test\n", argv[0]);
- return 1;
- }
-
- if(argc > 2) {
- if((prec = atoi(argv[2])) <= 0)
- prec = 8;
- else
- prec = (prec + (DIGIT_BIT - 1)) / DIGIT_BIT;
- }
-
- printf("Test 3a: Multiplication vs squaring timing test\n"
- "Precision: %d digits (%u bits)\n"
- "# of tests: %d\n\n", prec, prec * DIGIT_BIT, num);
-
- mp_init_size(&a, prec);
-
- mp_init(&c); mp_init(&d);
-
- printf("Verifying accuracy ... \n");
- srand((unsigned int)seed);
- for(ix = 0; ix < num; ix++) {
- mpp_random_size(&a, prec);
- mp_mul(&a, &a, &c);
- mp_sqr(&a, &d);
-
- if(mp_cmp(&c, &d) != 0) {
- printf("Error! Results not accurate:\n");
- printf("a = "); mp_print(&a, stdout); fputc('\n', stdout);
- printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
- printf("d = "); mp_print(&d, stdout); fputc('\n', stdout);
- mp_sub(&c, &d, &d);
- printf("dif "); mp_print(&d, stdout); fputc('\n', stdout);
- mp_clear(&c); mp_clear(&d);
- mp_clear(&a);
- return 1;
- }
- }
- printf("Accuracy is confirmed for the %d test samples\n", num);
- mp_clear(&d);
-
- printf("Testing squaring ... \n");
- srand((unsigned int)seed);
- start = clock();
- for(ix = 0; ix < num; ix++) {
- mpp_random_size(&a, prec);
- mp_sqr(&a, &c);
- }
- finish = clock();
-
- d2 = (double)(finish - start) / CLOCKS_PER_SEC;
-
- printf("Testing multiplication ... \n");
- srand((unsigned int)seed);
- start = clock();
- for(ix = 0; ix < num; ix++) {
- mpp_random(&a);
- mp_mul(&a, &a, &c);
- }
- finish = clock();
-
- d1 = (double)(finish - start) / CLOCKS_PER_SEC;
-
- printf("Multiplication time: %.3f sec (%.3f each)\n", d1, d1 / num);
- printf("Squaring time: %.3f sec (%.3f each)\n", d2, d2 / num);
- printf("Improvement: %.2f%%\n", (1.0 - (d2 / d1)) * 100.0);
-
- mp_clear(&c);
- mp_clear(&a);
-
- return 0;
-}