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