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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.binaryprefix;
/**
* Represents binary prefixes.
*
* @author Tony Vaagenes
*/
public enum BinaryPrefix {
//represents the binary prefix 2^(k*10)
unit(0),
kilo(1, 'K'),
mega(2, 'M'),
giga(3, 'G'),
tera(4, 'T'),
peta(5, 'P'),
exa(6, 'E'),
zetta(7, 'Z'),
yotta(8, 'Y');
private final int k;
public final char symbol;
private BinaryPrefix(int k, char symbol) {
this.k = k;
this.symbol = symbol;
}
private BinaryPrefix(int k) {
this(k, (char)0);
}
/* In most cases, BinaryScaledAmount should be prefered instead of this */
public double convertFrom(double value, BinaryPrefix binaryPrefix) {
return value * Math.pow(2,
10 * (binaryPrefix.k - k));
}
public static BinaryPrefix fromSymbol(char c) {
for (BinaryPrefix binaryPrefix : values()) {
if (binaryPrefix.symbol == c)
return binaryPrefix;
}
throw new RuntimeException("No such binary prefix: " + c);
}
}
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