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using System;
namespace Noddybox.Emulation.EightBit
{
/// <summary>
/// Provides helpers for shifting smaller values around without casts all over the shop.
/// </summary>
public static class Binary
{
/// <summary>
/// Shift 8-bits to the left.
/// </summary>
/// <param name="b">The byte.</param>
/// <param name="shift">How many bits to shift.</param>
/// <returns>The shifted value.</returns>
public static byte ShiftLeft(byte b, int shift)
{
return (byte)((b << shift) & 0xff);
}
/// <summary>
/// Shift 8-bits to the right.
/// </summary>
/// <param name="b">The byte.</param>
/// <param name="shift">How many bits to shift.</param>
/// <returns>The shifted value.</returns>
public static byte ShiftRight(byte b, int shift)
{
return (byte)((b >> shift) & 0xff);
}
/// <summary>
/// Shift 16-bits to the left.
/// </summary>
/// <param name="w">The word.</param>
/// <param name="shift">How many bits to shift.</param>
/// <returns>The shifted value.</returns>
public static ushort ShiftLeft(ushort w, int shift)
{
return (ushort)((w << shift) & 0xffff);
}
/// <summary>
/// Shift 16-bits to the right.
/// </summary>
/// <param name="w">The word.</param>
/// <param name="shift">How many bits to shift.</param>
/// <returns>The shifted value.</returns>
public static ushort ShiftRight(ushort w, int shift)
{
return (ushort)((w >> shift) & 0xffff);
}
}
}
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