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/*
* Copyright (c) 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;
import org.ejml.data.DMatrixRMaj;
import org.ejml.data.DMatrixSparseCSC;
import org.junit.jupiter.api.Test;
import java.text.DecimalFormat;
import java.util.Random;
import static org.junit.jupiter.api.Assertions.*;
/**
* @author Peter Abeles
*/
@SuppressWarnings("FloatingPointLiteralPrecision")
public class TestUtilEjml {
Random rand = new Random(23423);
@Test
void max_array() {
double[] a = new double[]{-1, 2, 3, 4, 5, 6, 3, 4, 5, 7, 8, 2, 3, -5, -6};
assertEquals(UtilEjml.max(a, 0, a.length), 8);
assertEquals(UtilEjml.max(a, 6, 3), 5);
}
/**
* Provide it a couple of different strings to parse. Then compare
* the results against the expect answer
*/
@Test
void parse_DDRM() {
String a = "-0.779094 1.682750\n" +
" 1.304014 -1.880739\n";
DMatrixRMaj m = UtilEjml.parse_DDRM(a, 2);
assertEquals(2, m.numCols);
assertEquals(2, m.numRows);
assertEquals(-0.779094, m.get(0, 0), UtilEjml.TEST_F64);
assertEquals(1.682750, m.get(0, 1), UtilEjml.TEST_F64);
assertEquals(1.304014, m.get(1, 0), UtilEjml.TEST_F64);
assertEquals(-1.880739, m.get(1, 1), UtilEjml.TEST_F64);
// give it a matrix with a space in the first element, see if that screws it up
a = " -0.779094 1.682750 5\n" +
" 1.304014 -1.880739 8\n";
m = UtilEjml.parse_DDRM(a, 3);
assertEquals(3, m.numCols);
assertEquals(2, m.numRows);
assertEquals(-0.779094, m.get(0, 0), UtilEjml.TEST_F64);
}
@Test
void parse_DSCC() {
String a = "-0.779094 1.682750\n" +
" 0 -1.880739\n";
DMatrixSparseCSC m = UtilEjml.parse_DSCC(a, 2);
assertEquals(3, m.nz_length);
assertEquals(2, m.numCols);
assertEquals(2, m.numRows);
assertEquals(-0.779094, m.get(0, 0), UtilEjml.TEST_F64);
assertEquals(1.682750, m.get(0, 1), UtilEjml.TEST_F64);
assertEquals(0, m.get(1, 0), UtilEjml.TEST_F64);
assertEquals(-1.880739, m.get(1, 1), UtilEjml.TEST_F64);
}
@Test
void checkTooLarge() {
UtilEjml.checkTooLarge(0, 0);
UtilEjml.checkTooLarge(1000, 100);
try {
UtilEjml.checkTooLarge(Integer.MAX_VALUE, 600);
fail("Exception should have been thrown");
} catch( IllegalArgumentException ignore){}
}
@Test
void checkTooLargeComplex() {
UtilEjml.checkTooLargeComplex(0, 0);
UtilEjml.checkTooLargeComplex(1000, 100);
UtilEjml.checkTooLargeComplex(Integer.MAX_VALUE/2, 1);
try {
UtilEjml.checkTooLargeComplex(Integer.MAX_VALUE/2, 2);
fail("Exception should have been thrown");
} catch (IllegalArgumentException ignore) {}
try {
UtilEjml.checkTooLargeComplex(Integer.MAX_VALUE, 600);
fail("Exception should have been thrown");
} catch (IllegalArgumentException ignore) {}
}
@Test
void shuffle() {
int[] m = new int[200];
for (int i = 0; i < m.length; i++) {
m[i] = i;
}
int N = m.length - 5;
UtilEjml.shuffle(m, N, 0, 40, rand);
// end should be untouched
for (int i = N; i < m.length; i++) {
assertEquals(i, m[i]);
}
// the order should be drastically changed
int numOrdered = 0;
for (int i = 0; i < 40; i++) {
if (m[i] == i) {
numOrdered++;
}
}
assertTrue(numOrdered < 10);
}
@Test
void fancyStringF() {
DecimalFormat format = new DecimalFormat("#");
assertEquals("-0 ", UtilEjml.fancyStringF(-0.0, format, 11, 4));
assertEquals(" 0 ", UtilEjml.fancyStringF(0.0, format, 11, 4));
assertEquals("-1 ", UtilEjml.fancyStringF(-1, format, 11, 4));
assertEquals(" 1 ", UtilEjml.fancyStringF(1, format, 11, 4));
assertEquals("-12 ", UtilEjml.fancyStringF(-12, format, 11, 4));
assertEquals(" 12 ", UtilEjml.fancyStringF(12, format, 11, 4));
assertEquals("-1.1234 ", UtilEjml.fancyStringF(-1.1234, format, 11, 4));
assertEquals(" 1.1234 ", UtilEjml.fancyStringF(1.1234, format, 11, 4));
assertEquals("-1234.1234 ", UtilEjml.fancyStringF(-1234.1234, format, 11, 4));
assertEquals(" 1234.1234 ", UtilEjml.fancyStringF(1234.1234, format, 11, 4));
assertEquals("-1234.12343", UtilEjml.fancyStringF(-1234.123433, format, 11, 4)); // check rounding here
assertEquals(" 1234.12343", UtilEjml.fancyStringF(1234.123433, format, 11, 4));
assertEquals("-1234.12346", UtilEjml.fancyStringF(-1234.123456, format, 11, 4)); // no rounding needed
assertEquals(" 1234.12346", UtilEjml.fancyStringF(1234.123456, format, 11, 4));
assertEquals("-123456.123", UtilEjml.fancyStringF(-123456.123456, format, 11, 4));
assertEquals(" 123456.123", UtilEjml.fancyStringF(123456.123456, format, 11, 4));
assertEquals("-1.2346E+10", UtilEjml.fancyStringF(-12345678901.123456, format, 11, 4));
assertEquals(" 1.2346E+10", UtilEjml.fancyStringF(12345678901.123456, format, 11, 4));
assertEquals("-.1234 ", UtilEjml.fancyStringF(-0.1234, format, 11, 4));
assertEquals(" .1234 ", UtilEjml.fancyStringF(0.1234, format, 11, 4));
assertEquals("-.12345678 ", UtilEjml.fancyStringF(-0.12345678, format, 11, 4));
assertEquals(" .12345678 ", UtilEjml.fancyStringF(0.12345678, format, 11, 4));
assertEquals("-.123456789", UtilEjml.fancyStringF(-0.12345678901, format, 11, 4));
assertEquals(" .123456789", UtilEjml.fancyStringF(0.12345678901, format, 11, 4));
assertEquals("-.0000123 ", UtilEjml.fancyStringF(-0.0000123, format, 11, 4));
assertEquals(" .0000123 ", UtilEjml.fancyStringF(0.0000123, format, 11, 4));
assertEquals("-.000012345", UtilEjml.fancyStringF(-0.0000123451, format, 11, 4));
assertEquals(" .000012345", UtilEjml.fancyStringF(0.0000123451, format, 11, 4));
assertEquals("-.000012346", UtilEjml.fancyStringF(-0.0000123456, format, 11, 4));
assertEquals(" .000012346", UtilEjml.fancyStringF(0.0000123456, format, 11, 4));
assertEquals("-.000001235", UtilEjml.fancyStringF(-0.000001234567, format, 11, 3)); // see if reduction of significant digits changes output
assertEquals(" .000001235", UtilEjml.fancyStringF(0.000001234567, format, 11, 3));
assertEquals("-1.2345E-06", UtilEjml.fancyStringF(-0.0000012345, format, 11, 4));
assertEquals(" 1.2345E-06", UtilEjml.fancyStringF(0.0000012345, format, 11, 4));
assertEquals("-1.2346E-06", UtilEjml.fancyStringF(-0.00000123456, format, 11, 4));
assertEquals(" 1.2346E-06", UtilEjml.fancyStringF(0.00000123456, format, 11, 4));
assertEquals("-1.235E-07 ", UtilEjml.fancyStringF(-0.0000001234567, format, 11, 3));
assertEquals(" 1.235E-07 ", UtilEjml.fancyStringF(0.0000001234567, format, 11, 3));
assertEquals("-1.2346E-06", UtilEjml.fancyStringF(-0.000001234567, format, 11, 4));
assertEquals(" 1.2346E-06", UtilEjml.fancyStringF(0.000001234567, format, 11, 4));
assertEquals("-1.2346E-07", UtilEjml.fancyStringF(-0.0000001234567, format, 11, 4));
assertEquals(" 1.2346E-07", UtilEjml.fancyStringF(0.0000001234567, format, 11, 4));
assertEquals("-1.235E-102", UtilEjml.fancyStringF(-1.234567E-102, format, 11, 4));
assertEquals(" 1.235E-102", UtilEjml.fancyStringF(1.234567E-102, format, 11, 4));
assertEquals("-1.235E+102", UtilEjml.fancyStringF(-1.234567E102, format, 11, 4));
assertEquals(" 1.235E+102", UtilEjml.fancyStringF(1.234567E102, format, 11, 4));
}
@Test
void exceedsMaxMatrixSize() {
assertFalse(UtilEjml.exceedsMaxMatrixSize(100, 200));
assertFalse(UtilEjml.exceedsMaxMatrixSize(1, 200));
assertFalse(UtilEjml.exceedsMaxMatrixSize(50, 0));
assertTrue(UtilEjml.exceedsMaxMatrixSize(1_000_000, 1_000_000));
}
}
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