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/*
* Simple test driver for MPI library
*
* Test 3: Multiplication, division, and exponentiation test
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#include <time.h>
#include "mpi.h"
#define EXPT 0 /* define nonzero to get exponentiate test */
int
main(int argc, char *argv[])
{
int ix;
mp_int a, b, c, d;
mp_digit r;
mp_err res;
if (argc < 3) {
fprintf(stderr, "Usage: %s <a> <b>\n", argv[0]);
return 1;
}
printf("Test 3: Multiplication and division\n\n");
srand(time(NULL));
mp_init(&a);
mp_init(&b);
mp_read_variable_radix(&a, argv[1], 10);
mp_read_variable_radix(&b, argv[2], 10);
printf("a = ");
mp_print(&a, stdout);
fputc('\n', stdout);
printf("b = ");
mp_print(&b, stdout);
fputc('\n', stdout);
mp_init(&c);
printf("\nc = a * b\n");
mp_mul(&a, &b, &c);
printf("c = ");
mp_print(&c, stdout);
fputc('\n', stdout);
printf("\nc = b * 32523\n");
mp_mul_d(&b, 32523, &c);
printf("c = ");
mp_print(&c, stdout);
fputc('\n', stdout);
mp_init(&d);
printf("\nc = a / b, d = a mod b\n");
mp_div(&a, &b, &c, &d);
printf("c = ");
mp_print(&c, stdout);
fputc('\n', stdout);
printf("d = ");
mp_print(&d, stdout);
fputc('\n', stdout);
ix = rand() % 256;
printf("\nc = a / %d, r = a mod %d\n", ix, ix);
mp_div_d(&a, (mp_digit)ix, &c, &r);
printf("c = ");
mp_print(&c, stdout);
fputc('\n', stdout);
printf("r = %04X\n", r);
#if EXPT
printf("\nc = a ** b\n");
mp_expt(&a, &b, &c);
printf("c = ");
mp_print(&c, stdout);
fputc('\n', stdout);
#endif
ix = rand() % 256;
printf("\nc = 2^%d\n", ix);
mp_2expt(&c, ix);
printf("c = ");
mp_print(&c, stdout);
fputc('\n', stdout);
mp_clear(&d);
mp_clear(&c);
mp_clear(&b);
mp_clear(&a);
return 0;
}
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