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Diffstat (limited to 'src/org/unitConverter/math/DecimalComparison.java')
-rw-r--r-- | src/org/unitConverter/math/DecimalComparison.java | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/src/org/unitConverter/math/DecimalComparison.java b/src/org/unitConverter/math/DecimalComparison.java deleted file mode 100644 index 7cdbe5b..0000000 --- a/src/org/unitConverter/math/DecimalComparison.java +++ /dev/null @@ -1,114 +0,0 @@ -/** - * Copyright (C) 2019 Adrien Hopkins - * - * This program 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. - * - * This program 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 this program. If not, see <https://www.gnu.org/licenses/>. - */ -package org.unitConverter.math; - -/** - * A class that contains methods to compare float and double values. - * - * @author Adrien Hopkins - * @since 2019-03-18 - * @since v0.2.0 - */ -public final class DecimalComparison { - /** - * The value used for double comparison. If two double values are within this value multiplied by the larger value, - * they are considered equal. - * - * @since 2019-03-18 - * @since v0.2.0 - */ - public static final double DOUBLE_EPSILON = 1.0e-15; - - /** - * The value used for float comparison. If two float values are within this value multiplied by the larger value, - * they are considered equal. - * - * @since 2019-03-18 - * @since v0.2.0 - */ - public static final float FLOAT_EPSILON = 1.0e-6f; - - /** - * Tests for equality of double values using {@link #DOUBLE_EPSILON}. - * - * @param a - * first value to test - * @param b - * second value to test - * @return whether they are equal - * @since 2019-03-18 - * @since v0.2.0 - */ - public static final boolean equals(final double a, final double b) { - return DecimalComparison.equals(a, b, DOUBLE_EPSILON); - } - - /** - * Tests for double equality using a custom epsilon value. - * - * @param a - * first value to test - * @param b - * second value to test - * @param epsilon - * allowed difference - * @return whether they are equal - * @since 2019-03-18 - * @since v0.2.0 - */ - public static final boolean equals(final double a, final double b, final double epsilon) { - return Math.abs(a - b) <= epsilon * Math.max(Math.abs(a), Math.abs(b)); - } - - /** - * Tests for equality of float values using {@link #FLOAT_EPSILON}. - * - * @param a - * first value to test - * @param b - * second value to test - * @return whether they are equal - * @since 2019-03-18 - * @since v0.2.0 - */ - public static final boolean equals(final float a, final float b) { - return DecimalComparison.equals(a, b, FLOAT_EPSILON); - } - - /** - * Tests for float equality using a custom epsilon value. - * - * @param a - * first value to test - * @param b - * second value to test - * @param epsilon - * allowed difference - * @return whether they are equal - * @since 2019-03-18 - * @since v0.2.0 - */ - public static final boolean equals(final float a, final float b, final float epsilon) { - return Math.abs(a - b) <= epsilon * Math.max(Math.abs(a), Math.abs(b)); - } - - // You may NOT get any DecimalComparison instances - private DecimalComparison() { - throw new AssertionError(); - } - -} |