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package com.lti.utils;

/**
 *
 * Because java does not support unsigned types, a collection of useful
 * functions for treating types as unsigned. TODO: move to
 * src.utils/com.lti.utils.
 *
 * @author Ken Larson
 */
public final class UnsignedUtils
{
    public static final int MAX_UBYTE = (Byte.MAX_VALUE) * 2 + 1; // 255

    public static final int MAX_USHORT = (Short.MAX_VALUE) * 2 + 1; // 65535
    public static final long MAX_UINT = ((long) Integer.MAX_VALUE) * 2 + 1;

    public static int uByteToInt(byte value)
    {
        if (value >= 0)
            return value;
        else
            return MAX_UBYTE + 1 + value;
    }

    public static long uIntToLong(int value)
    {
        if (value >= 0)
            return value;
        else
            return MAX_UINT + 1L + value;
    }

    public static int uShortToInt(short value)
    {
        if (value >= 0)
            return value;
        else
            return MAX_USHORT + 1 + value;
    }

    private UnsignedUtils()
    {
        super();
    }
}