The Tor Browser: security/nss/lib/freebl/mpi/tests/mptest-5.c@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /*

     2  * Simple test driver for MPI library

     3  *

     4  * Test 5: Other number theoretic functions

     5  *

     6  * This Source Code Form is subject to the terms of the Mozilla Public

     7  * License, v. 2.0. If a copy of the MPL was not distributed with this

     8  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

    10 #include <stdio.h>

    11 #include <stdlib.h>

    12 #include <string.h>

    13 #include <ctype.h>

    14 #include <limits.h>

    16 #include "mpi.h"

    18 int main(int argc, char *argv[])

    19 {

    20   mp_int   a, b, c, x, y;

    22   if(argc < 3) {

    23     fprintf(stderr, "Usage: %s <a> <b>\n", argv[0]);

    24     return 1;

    25   }

    27   printf("Test 5: Number theoretic functions\n\n");

    29   mp_init(&a);

    30   mp_init(&b);

    32   mp_read_radix(&a, argv[1], 10);

    33   mp_read_radix(&b, argv[2], 10);

    35   printf("a = "); mp_print(&a, stdout); fputc('\n', stdout);

    36   printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);

    38   mp_init(&c);

    39   printf("\nc = (a, b)\n");

    41   mp_gcd(&a, &b, &c);

    42   printf("Euclid: c = "); mp_print(&c, stdout); fputc('\n', stdout);

    43 /*

    44   mp_bgcd(&a, &b, &c);

    45   printf("Binary: c = "); mp_print(&c, stdout); fputc('\n', stdout);

    46 */

    47   mp_init(&x);

    48   mp_init(&y);

    49   printf("\nc = (a, b) = ax + by\n");

    51   mp_xgcd(&a, &b, &c, &x, &y);

    52   printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);

    53   printf("x = "); mp_print(&x, stdout); fputc('\n', stdout);

    54   printf("y = "); mp_print(&y, stdout); fputc('\n', stdout);

    56   printf("\nc = a^-1 (mod b)\n");

    57   if(mp_invmod(&a, &b, &c) == MP_UNDEF) {

    58     printf("a has no inverse mod b\n");

    59   } else {

    60     printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);

    61   }

    63   mp_clear(&y);

    64   mp_clear(&x);

    65   mp_clear(&c);

    66   mp_clear(&b);

    67   mp_clear(&a);

    69   return 0;

    70 }

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