Release v0.2.0v0.2.0

1 files changed, 72 insertions, 0 deletions

diff --git a/src/org/unitConverter/unit/UnitPrefix.java b/src/org/unitConverter/unit/UnitPrefix.java
new file mode 100755
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+++ b/src/org/unitConverter/unit/UnitPrefix.java
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+/**
+ * Copyright (C) 2018 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.unit;
+
+/**
+ * A prefix that can be attached onto the front of any unit, which multiplies it by a certain value
+ * 
+ * @author Adrien Hopkins
+ * @since 2019-01-14
+ * @since v0.1.0
+ */
+public interface UnitPrefix {
+	/**
+	 * Divides this prefix by {@code other}.
+	 * 
+	 * @param other
+	 *            prefix to divide by
+	 * @return quotient of prefixes
+	 * @since 2019-04-13
+	 * @since v0.2.0
+	 */
+	default UnitPrefix dividedBy(final UnitPrefix other) {
+		return new DefaultUnitPrefix(this.getMultiplier() / other.getMultiplier());
+	}
+
+	/**
+	 * @return this prefix's multiplier
+	 * @since 2019-01-14
+	 * @since v0.1.0
+	 */
+	double getMultiplier();
+
+	/**
+	 * Multiplies this prefix by {@code other}.
+	 * 
+	 * @param other
+	 *            prefix to multiply by
+	 * @return product of prefixes
+	 * @since 2019-04-13
+	 * @since v0.2.0
+	 */
+	default UnitPrefix times(final UnitPrefix other) {
+		return new DefaultUnitPrefix(this.getMultiplier() * other.getMultiplier());
+	}
+
+	/**
+	 * Raises this prefix to an exponent.
+	 * 
+	 * @param exponent
+	 *            exponent to raise to
+	 * @return result of exponentiation.
+	 * @since 2019-04-13
+	 * @since v0.2.0
+	 */
+	default UnitPrefix toExponent(final double exponent) {
+		return new DefaultUnitPrefix(Math.pow(getMultiplier(), exponent));
+	}
+}