/security/nss/lib/freebl/mpi/tests/mptest-5.c

http://github.com/zpao/v8monkey · C · 103 lines · 44 code · 14 blank · 45 comment · 4 complexity · d8c45751e9f4595e7dd5cde1eb712c86 MD5 · raw file

  1. /*
  2. * Simple test driver for MPI library
  3. *
  4. * Test 5: Other number theoretic functions
  5. *
  6. * ***** BEGIN LICENSE BLOCK *****
  7. * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  8. *
  9. * The contents of this file are subject to the Mozilla Public License Version
  10. * 1.1 (the "License"); you may not use this file except in compliance with
  11. * the License. You may obtain a copy of the License at
  12. * http://www.mozilla.org/MPL/
  13. *
  14. * Software distributed under the License is distributed on an "AS IS" basis,
  15. * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  16. * for the specific language governing rights and limitations under the
  17. * License.
  18. *
  19. * The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
  20. *
  21. * The Initial Developer of the Original Code is
  22. * Michael J. Fromberger.
  23. * Portions created by the Initial Developer are Copyright (C) 1998
  24. * the Initial Developer. All Rights Reserved.
  25. *
  26. * Contributor(s):
  27. *
  28. * Alternatively, the contents of this file may be used under the terms of
  29. * either the GNU General Public License Version 2 or later (the "GPL"), or
  30. * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  31. * in which case the provisions of the GPL or the LGPL are applicable instead
  32. * of those above. If you wish to allow use of your version of this file only
  33. * under the terms of either the GPL or the LGPL, and not to allow others to
  34. * use your version of this file under the terms of the MPL, indicate your
  35. * decision by deleting the provisions above and replace them with the notice
  36. * and other provisions required by the GPL or the LGPL. If you do not delete
  37. * the provisions above, a recipient may use your version of this file under
  38. * the terms of any one of the MPL, the GPL or the LGPL.
  39. *
  40. * ***** END LICENSE BLOCK ***** */
  41. /* $Id: mptest-5.c,v 1.4 2004/04/27 23:04:37 gerv%gerv.net Exp $ */
  42. #include <stdio.h>
  43. #include <stdlib.h>
  44. #include <string.h>
  45. #include <ctype.h>
  46. #include <limits.h>
  47. #include "mpi.h"
  48. int main(int argc, char *argv[])
  49. {
  50. mp_int a, b, c, x, y;
  51. if(argc < 3) {
  52. fprintf(stderr, "Usage: %s <a> <b>\n", argv[0]);
  53. return 1;
  54. }
  55. printf("Test 5: Number theoretic functions\n\n");
  56. mp_init(&a);
  57. mp_init(&b);
  58. mp_read_radix(&a, argv[1], 10);
  59. mp_read_radix(&b, argv[2], 10);
  60. printf("a = "); mp_print(&a, stdout); fputc('\n', stdout);
  61. printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
  62. mp_init(&c);
  63. printf("\nc = (a, b)\n");
  64. mp_gcd(&a, &b, &c);
  65. printf("Euclid: c = "); mp_print(&c, stdout); fputc('\n', stdout);
  66. /*
  67. mp_bgcd(&a, &b, &c);
  68. printf("Binary: c = "); mp_print(&c, stdout); fputc('\n', stdout);
  69. */
  70. mp_init(&x);
  71. mp_init(&y);
  72. printf("\nc = (a, b) = ax + by\n");
  73. mp_xgcd(&a, &b, &c, &x, &y);
  74. printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
  75. printf("x = "); mp_print(&x, stdout); fputc('\n', stdout);
  76. printf("y = "); mp_print(&y, stdout); fputc('\n', stdout);
  77. printf("\nc = a^-1 (mod b)\n");
  78. if(mp_invmod(&a, &b, &c) == MP_UNDEF) {
  79. printf("a has no inverse mod b\n");
  80. } else {
  81. printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
  82. }
  83. mp_clear(&y);
  84. mp_clear(&x);
  85. mp_clear(&c);
  86. mp_clear(&b);
  87. mp_clear(&a);
  88. return 0;
  89. }