mirror of
https://github.com/rn10950/RetroZilla.git
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94 lines
2.0 KiB
C
94 lines
2.0 KiB
C
/*
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* Simple test driver for MPI library
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*
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* Test 4: Modular arithmetic tests
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <limits.h>
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#include "mpi.h"
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int main(int argc, char *argv[])
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{
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int ix;
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mp_int a, b, c, m;
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mp_digit r;
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if(argc < 4) {
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fprintf(stderr, "Usage: %s <a> <b> <m>\n", argv[0]);
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return 1;
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}
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printf("Test 4: Modular arithmetic\n\n");
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mp_init(&a);
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mp_init(&b);
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mp_init(&m);
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mp_read_radix(&a, argv[1], 10);
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mp_read_radix(&b, argv[2], 10);
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mp_read_radix(&m, argv[3], 10);
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printf("a = "); mp_print(&a, stdout); fputc('\n', stdout);
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printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
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printf("m = "); mp_print(&m, stdout); fputc('\n', stdout);
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mp_init(&c);
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printf("\nc = a (mod m)\n");
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mp_mod(&a, &m, &c);
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printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
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printf("\nc = b (mod m)\n");
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mp_mod(&b, &m, &c);
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printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
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printf("\nc = b (mod 1853)\n");
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mp_mod_d(&b, 1853, &r);
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printf("c = %04X\n", r);
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printf("\nc = (a + b) mod m\n");
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mp_addmod(&a, &b, &m, &c);
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printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
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printf("\nc = (a - b) mod m\n");
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mp_submod(&a, &b, &m, &c);
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printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
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printf("\nc = (a * b) mod m\n");
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mp_mulmod(&a, &b, &m, &c);
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printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
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printf("\nc = (a ** b) mod m\n");
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mp_exptmod(&a, &b, &m, &c);
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printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
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printf("\nIn-place modular squaring test:\n");
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for(ix = 0; ix < 5; ix++) {
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printf("a = (a * a) mod m a = ");
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mp_sqrmod(&a, &m, &a);
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mp_print(&a, stdout);
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fputc('\n', stdout);
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}
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mp_clear(&c);
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mp_clear(&m);
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mp_clear(&b);
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mp_clear(&a);
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return 0;
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}
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