/*
* Copyright 2011, Zettabyte Storage LLC
*
* This file is part of Vash.
*
* Vash is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Vash 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Vash. If not, see <http://www.gnu.org/licenses/>.
*/
package vash.operation;
import vash.ImageParameters;
import vash.Plane;
import vash.Seed;
public class Modulus extends BinaryOperationNode {
public Modulus(OperationNode a, OperationNode b) {super(a,b);}
public Modulus(Seed s) {super(s);}
@Override
public OperationNode clone() {
return new Modulus(_children[0].clone(), _children[1].clone());
}
@Override
public Plane compute(ImageParameters ip) {
Plane A = _children[0].compute(ip);
Plane B = _children[1].compute(ip);
Plane out = ip.getPlane();
for(int j = 0; j < ip.getH(); j++ ) {
for(int i = 0; i < ip.getW(); i++) {
if(B.data[i][j] == 0.0f) {
if(A.data[i][j] > 0.0f) out.data[i][j] = 1.0f;
else if(A.data[i][j] < 0.0f) out.data[i][j] = -1.0f;
else out.data[i][j] = 0.0f;
} else {
// Note: this is a separate function; fmod is simply % in
// java. Experiment with and consider rolling a new
// op with IEEEremainder, if it looks good.
//out.data[i][j] = (float)Math.IEEEremainder(A.data[i][j], B.data[i][j]);
out.data[i][j] = A.data[i][j] % B.data[i][j];
}
}
}
ip.putPlane(A);
ip.putPlane(B);
return out;
}
}