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// This file is part of the Noddybox.Emulation C# suite.
//
// Noddybox.Emulation is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Noddybox.Emulation is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Noddybox.Emulation. If not, see <http://www.gnu.org/licenses/>.
//
// Copyright (c) Ian Cowburn 2012
//
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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