sean-m
/
Vanara
mirror of https://github.com/dahall/Vanara.git
1
0
Fork 0
Code Issues Releases Wiki Activity

Added static methods for bit manipulation in BitHelper class.

pull/10/head
David Hall 2018-07-26 16:48:06 -06:00
parent ba0a2313b6
commit 5dfd395653
1 changed files with 27 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
Core/Extensions/BitHelper.cs Normal file
View File

@ -0,0 +1,27 @@
using System;
namespace Vanara.Extensions
{
/// <summary>Static methods to help with bit manipulation.</summary>
public static class BitHelper
{
/// <summary>Gets the bit value at the specified index in a bit vector.</summary>
/// <typeparam name="T">The type of the bit vector. Must be of type <see cref="IConvertible"/>.</typeparam>
/// <param name="bits">The bit vector.</param>
/// <param name="idx">The index of the bit to get.</param>
/// <returns><see langword="true"/> if the bit is set (1); <see langword="false"/> otherwise.</returns>
public static bool GetBit<T>(ref T bits, byte idx) where T : IConvertible => (bits.ToInt64(null) & 1 << idx) != 0;
/// <summary>Sets the bit value at the specified index in a bit vector.</summary>
/// <typeparam name="T">The type of the bit vector. Must be of type <see cref="IConvertible"/>.</typeparam>
/// <param name="bits">The bit vector.</param>
/// <param name="idx">The index of the bit to set.</param>
/// <param name="value">If set to <see langword="true"/>, set the bit (= 1); otherwise, clear the bit (= 0).</param>
public static void SetBit<T>(ref T bits, byte idx, bool value) where T : IConvertible
{
long bit = 1 << idx;
var l = bits.ToInt64(null);
bits = (T)(object)(value ? l | bit : l & ~bit);
}
}
}