1 files changed, 76 insertions, 0 deletions
diff --git a/src/unitConverter/unit/BaseUnit.java b/src/unitConverter/unit/BaseUnit.java
index 339b7bf..46316bf 100755
--- a/src/unitConverter/unit/BaseUnit.java
+++ b/src/unitConverter/unit/BaseUnit.java
@@ -16,6 +16,8 @@
  */
 package unitConverter.unit;
 
+import java.util.Objects;
+
 import unitConverter.dimension.UnitDimension;
 
 /**
@@ -61,6 +63,80 @@ public final class BaseUnit extends AbstractUnit {
 		return value;
 	}
 
+	/**
+	 * Divides this unit by another unit.
+	 * 
+	 * @param other
+	 *            unit to divide by
+	 * @return quotient of two units
+	 * @throws IllegalArgumentException
+	 *             if this unit's system is not other's system
+	 * @throws NullPointerException
+	 *             if other is null
+	 * @since 2018-12-22
+	 */
+	public BaseUnit dividedBy(final BaseUnit other) {
+		Objects.requireNonNull(other, "other must not be null.");
+		if (!this.getSystem().equals(other.getSystem()))
+			throw new IllegalArgumentException("Incompatible base units for division.");
+		return new BaseUnit(this.getDimension().dividedBy(other.getDimension()), this.getSystem());
+	}
+
+	/**
+	 * Divides this unit by a divisor
+	 * 
+	 * @param divisor
+	 *            amount to divide by
+	 * @return quotient
+	 * @since 2018-12-23
+	 */
+	public LinearUnit dividedBy(final double divisor) {
+		return new LinearUnit(this, 1 / divisor);
+	}
+
+	/**
+	 * Multiplies this unit by another unit.
+	 * 
+	 * @param other
+	 *            unit to multiply by
+	 * @return product of two units
+	 * @throws IllegalArgumentException
+	 *             if this unit's system is not other's system
+	 * @throws NullPointerException
+	 *             if other is null
+	 * @since 2018-12-22
+	 */
+	public BaseUnit times(final BaseUnit other) {
+		Objects.requireNonNull(other, "other must not be null.");
+		if (!this.getSystem().equals(other.getSystem()))
+			throw new IllegalArgumentException("Incompatible base units for multiplication.");
+		return new BaseUnit(this.getDimension().times(other.getDimension()), this.getSystem());
+	}
+
+	/**
+	 * Multiplies this unit by a multiplier.
+	 * 
+	 * @param multiplier
+	 *            amount to multiply by
+	 * @return product
+	 * @since 2018-12-23B
+	 */
+	public LinearUnit times(final double multiplier) {
+		return new LinearUnit(this, multiplier);
+	}
+
+	/**
+	 * Returns this unit, but to an exponent.
+	 * 
+	 * @param exponent
+	 *            exponent
+	 * @return result of exponentiation
+	 * @since 2019-01-15
+	 */
+	public BaseUnit toExponent(final int exponent) {
+		return this.toExponent(exponent);
+	}
+
 	@Override
 	public String toString() {
 		return String.format("%s base unit of%s dimension %s", this.getSystem(), this.isFullBase ? " base" : "",