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/*
* Copyright (c) 2009-2020, Peter Abeles. All Rights Reserved.
*
* This file is part of Efficient Java Matrix Library (EJML).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.ejml.masks;
import org.ejml.data.DMatrixRMaj;
import org.ejml.dense.row.RandomMatrices_DDRM;
import org.junit.jupiter.api.Test;
import java.util.Random;
import static org.junit.jupiter.api.Assertions.assertEquals;
public class TestDMasksPrimitive {
@Test
void primitiveArray() {
double[] values = {2, 0, 4, 0, 0, -1};
DMaskPrimitive.Builder maskBuilder = DMaskFactory.builder(values);
DMaskPrimitive mask = maskBuilder.withNegated(false).build();
DMaskPrimitive negated_mask = maskBuilder.withNegated(true).build();
boolean[] expected = {true, false, true, false, false, true};
for (int i = 0; i < values.length; i++) {
assertEquals(mask.isSet(i), expected[i]);
assertEquals(negated_mask.isSet(i), !expected[i]);
}
}
@Test
void denseMatrix() {
int dim = 20;
DMatrixRMaj matrix = RandomMatrices_DDRM.rectangle(dim, dim, new Random(42));
DMaskPrimitive.Builder maskBuilder = DMaskFactory.builder(matrix);
DMaskPrimitive mask = maskBuilder.withNegated(false).build();
DMaskPrimitive negated_mask = maskBuilder.withNegated(true).build();
for (int row = 0; row < dim; row++) {
for (int col = 0; col < dim; col++) {
boolean expected = (matrix.get(row, col) != 0);
assertEquals(mask.isSet(row, col), expected);
assertEquals(negated_mask.isSet(row, col), !expected);
}
}
}
@Test
void maxEntries() {
Mask mask = DMaskFactory.builder(new double[100]).build();
assertEquals(100, mask.maxMaskedEntries());
}
}
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