circomlib/circuits/mux1.circom
2019-07-08 14:08:04 +02:00

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/*
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/>.
*/
template MultiMux1(n) {
signal input c[n][2]; // Constants
signal input s; // Selector
signal output out[n];
for (var i=0; i<n; i++) {
out[i] <== (c[i][1] - c[i][0])*s + c[i][0];
}
}
template Mux1() {
var i;
signal input c[2]; // Constants
signal input s; // Selector
signal output out;
component mux = MultiMux1(1);
for (i=0; i<2; i++) {
mux.c[0][i] <== c[i];
}
s ==> mux.s;
mux.out[0] ==> out;
}