Unit prefixes now have math methods, and use the expression parser.

1 files changed, 36 insertions, 0 deletions

diff --git a/src/org/unitConverter/unit/UnitPrefix.java b/src/org/unitConverter/unit/UnitPrefix.java
index 289e60f..a1609c6 100755
--- a/src/org/unitConverter/unit/UnitPrefix.java
+++ b/src/org/unitConverter/unit/UnitPrefix.java
@@ -25,9 +25,45 @@ package org.unitConverter.unit;
  */
 public interface UnitPrefix {
 	/**
+	 * Divides this prefix by {@code other}.
+	 * 
+	 * @param other
+	 *            prefix to divide by
+	 * @return quotient of prefixes
+	 * @since 2019-04-13
+	 */
+	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
+	 */
+	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
+	 */
+	default UnitPrefix toExponent(final double exponent) {
+		return new DefaultUnitPrefix(Math.pow(getMultiplier(), exponent));
+	}
 }