2018-12-16 13:27:29 +03:00
|
|
|
/*
|
|
|
|
|
Copyright 2018 0KIMS association.
|
|
|
|
|
|
|
|
|
|
This file is part of circom (Zero Knowledge Circuit Compiler).
|
|
|
|
|
|
|
|
|
|
circom is a free software: you can redistribute it and/or modify it
|
|
|
|
|
under the terms of the GNU General Public License as published by
|
|
|
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
|
|
|
(at your option) any later version.
|
|
|
|
|
|
|
|
|
|
circom is distributed in the hope that it will be useful, but WITHOUT
|
|
|
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
|
|
|
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
|
|
|
|
|
License for more details.
|
|
|
|
|
|
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
|
|
|
along with circom. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
|
*/
|
|
|
|
|
|
2018-12-11 19:25:21 +03:00
|
|
|
/*
|
|
|
|
|
Assume sel is binary.
|
|
|
|
|
|
|
|
|
|
If sel == 0 then outL = L and outR=R
|
|
|
|
|
If sel == 1 then outL = R and outR=L
|
|
|
|
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
template Switcher() {
|
|
|
|
|
signal input sel;
|
|
|
|
|
signal input L;
|
|
|
|
|
signal input R;
|
|
|
|
|
signal output outL;
|
|
|
|
|
signal output outR;
|
|
|
|
|
|
|
|
|
|
signal aux;
|
|
|
|
|
|
|
|
|
|
aux <== (R-L)*sel; // We create aux in order to have only one multiplication
|
|
|
|
|
outL <== aux + L;
|
|
|
|
|
outR <== -aux + R;
|
|
|
|
|
}
|
