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Diffstat (limited to 'mozilla/security/nss/lib/freebl/mpi/tests/mptest-3a.c')
-rw-r--r-- | mozilla/security/nss/lib/freebl/mpi/tests/mptest-3a.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/mozilla/security/nss/lib/freebl/mpi/tests/mptest-3a.c b/mozilla/security/nss/lib/freebl/mpi/tests/mptest-3a.c new file mode 100644 index 0000000..46dc297 --- /dev/null +++ b/mozilla/security/nss/lib/freebl/mpi/tests/mptest-3a.c @@ -0,0 +1,144 @@ +/* + * 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: mptest-3a.c,v 1.3 2004/04/27 23:04:37 gerv%gerv.net Exp $ */ + +#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; +} |