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6 years ago
  1. /*
  2. Copyright 2018 0KIMS association.
  3. This file is part of circom (Zero Knowledge Circuit Compiler).
  4. circom is a free software: you can redistribute it and/or modify it
  5. under the terms of the GNU General Public License as published by
  6. the Free Software Foundation, either version 3 of the License, or
  7. (at your option) any later version.
  8. circom is distributed in the hope that it will be useful, but WITHOUT
  9. ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  10. or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
  11. License for more details.
  12. You should have received a copy of the GNU General Public License
  13. along with circom. If not, see <https://www.gnu.org/licenses/>.
  14. */
  15. template ShR(n, r) {
  16. signal input in[n];
  17. signal output out[n];
  18. for (var i=0; i<n; i++) {
  19. if (i+r >= n) {
  20. out[i] <== 0;
  21. } else {
  22. out[i] <== in[ i+r ];
  23. }
  24. }
  25. }