The Tor Browser: security/nss/lib/freebl/mpi/tests/mptest-3.c@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /*

     2  * Simple test driver for MPI library

     3  *

     4  * Test 3: Multiplication, division, and exponentiation test

     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 <time.h>

    18 #include "mpi.h"

    20 #define  SQRT 1  /* define nonzero to get square-root test  */

    21 #define  EXPT 0  /* define nonzero to get exponentiate test */

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

    24 {

    25   int      ix;

    26   mp_int   a, b, c, d;

    27   mp_digit r;

    28   mp_err   res;

    30   if(argc < 3) {

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

    32     return 1;

    33   }

    35   printf("Test 3: Multiplication and division\n\n");

    36   srand(time(NULL));

    38   mp_init(&a);

    39   mp_init(&b);

    41   mp_read_variable_radix(&a, argv[1], 10);

    42   mp_read_variable_radix(&b, argv[2], 10);

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

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

    46   mp_init(&c);

    47   printf("\nc = a * b\n");

    49   mp_mul(&a, &b, &c);

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

    52   printf("\nc = b * 32523\n");

    54   mp_mul_d(&b, 32523, &c);

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

    57   mp_init(&d);

    58   printf("\nc = a / b, d = a mod b\n");

    60   mp_div(&a, &b, &c, &d);

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

    62   printf("d = "); mp_print(&d, stdout); fputc('\n', stdout);

    64   ix = rand() % 256;

    65   printf("\nc = a / %d, r = a mod %d\n", ix, ix);

    66   mp_div_d(&a, (mp_digit)ix, &c, &r);

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

    68   printf("r = %04X\n", r);

    70 #if EXPT

    71   printf("\nc = a ** b\n");

    72   mp_expt(&a, &b, &c);

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

    74 #endif

    76   ix = rand() % 256;

    77   printf("\nc = 2^%d\n", ix);

    78   mp_2expt(&c, ix);

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

    81 #if SQRT

    82   printf("\nc = sqrt(a)\n");

    83   if((res = mp_sqrt(&a, &c)) != MP_OKAY) {

    84     printf("mp_sqrt: %s\n", mp_strerror(res));

    85   } else {

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

    87     mp_sqr(&c, &c);

    88     printf("c^2 = "); mp_print(&c, stdout); fputc('\n', stdout);

    89   }

    90 #endif

    92   mp_clear(&d);

    93   mp_clear(&c);

    94   mp_clear(&b);

    95   mp_clear(&a);

    97   return 0;

    98 }

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