mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-11-10 01:40:17 +01:00
116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
/*
|
|
* Test whether to include squaring code given the current settings
|
|
*
|
|
* ***** 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) 1997
|
|
* 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 ***** */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <limits.h>
|
|
#include <time.h>
|
|
|
|
#define MP_SQUARE 1 /* make sure squaring code is included */
|
|
|
|
#include "mpi.h"
|
|
#include "mpprime.h"
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int ntests, prec, ix;
|
|
unsigned int seed;
|
|
clock_t start, stop;
|
|
double multime, sqrtime;
|
|
mp_int a, c;
|
|
|
|
seed = (unsigned int)time(NULL);
|
|
|
|
if(argc < 3) {
|
|
fprintf(stderr, "Usage: %s <ntests> <nbits>\n", argv[0]);
|
|
return 1;
|
|
}
|
|
|
|
if((ntests = abs(atoi(argv[1]))) == 0) {
|
|
fprintf(stderr, "%s: must request at least 1 test.\n", argv[0]);
|
|
return 1;
|
|
}
|
|
if((prec = abs(atoi(argv[2]))) < CHAR_BIT) {
|
|
fprintf(stderr, "%s: must request at least %d bits.\n", argv[0],
|
|
CHAR_BIT);
|
|
return 1;
|
|
}
|
|
|
|
prec = (prec + (DIGIT_BIT - 1)) / DIGIT_BIT;
|
|
|
|
mp_init_size(&a, prec);
|
|
mp_init_size(&c, 2 * prec);
|
|
|
|
/* Test multiplication by self */
|
|
srand(seed);
|
|
start = clock();
|
|
for(ix = 0; ix < ntests; ix++) {
|
|
mpp_random_size(&a, prec);
|
|
mp_mul(&a, &a, &c);
|
|
}
|
|
stop = clock();
|
|
|
|
multime = (double)(stop - start) / CLOCKS_PER_SEC;
|
|
|
|
/* Test squaring */
|
|
srand(seed);
|
|
start = clock();
|
|
for(ix = 0; ix < ntests; ix++) {
|
|
mpp_random_size(&a, prec);
|
|
mp_sqr(&a, &c);
|
|
}
|
|
stop = clock();
|
|
|
|
sqrtime = (double)(stop - start) / CLOCKS_PER_SEC;
|
|
|
|
printf("Multiply: %.4f\n", multime);
|
|
printf("Square: %.4f\n", sqrtime);
|
|
if(multime < sqrtime) {
|
|
printf("Speedup: %.1f%%\n", 100.0 * (1.0 - multime / sqrtime));
|
|
printf("Prefer: multiply\n");
|
|
} else {
|
|
printf("Speedup: %.1f%%\n", 100.0 * (1.0 - sqrtime / multime));
|
|
printf("Prefer: square\n");
|
|
}
|
|
|
|
mp_clear(&a); mp_clear(&c);
|
|
return 0;
|
|
|
|
}
|