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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.binaryprefix;
/**
* An amount scaled by a binary prefix.
*
* <p>
* Examples: 2 kilo, 2 mega, ...
* </p>
*
* @author tonytv
*/
public final class BinaryScaledAmount {
public final double amount;
public final BinaryPrefix binaryPrefix;
public BinaryScaledAmount(double amount, BinaryPrefix binaryPrefix) {
this.amount = amount;
this.binaryPrefix = binaryPrefix;
}
public BinaryScaledAmount() {
this(0, BinaryPrefix.unit);
}
public long as(BinaryPrefix newBinaryPrefix) {
return Math.round(newBinaryPrefix.convertFrom(amount, binaryPrefix));
}
public boolean equals(BinaryScaledAmount candidate) {
return BinaryPrefix.unit.convertFrom(amount, binaryPrefix) ==
BinaryPrefix.unit.convertFrom(candidate.amount, candidate.binaryPrefix);
}
public BinaryScaledAmount multiply(double d) {
return new BinaryScaledAmount(d*amount, binaryPrefix);
}
public BinaryScaledAmount divide(double d) {
return multiply(1/d);
}
@Override
public boolean equals(Object candidate) {
if (!(candidate instanceof BinaryScaledAmount)) {
return false;
} else {
return equals((BinaryScaledAmount)candidate);
}
}
@Override
public int hashCode() {
return (int)BinaryPrefix.unit.convertFrom(amount, binaryPrefix);
}
}
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