77 lines
No EOL
2.1 KiB
C#
77 lines
No EOL
2.1 KiB
C#
/*
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* MIT License
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*
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* Copyright (c) 2018 Bonosoft, 2021 Lars Brubaker c# port
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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using System.Collections;
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/**
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* by bn on 01/07/2018.
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*/
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namespace Photon.Parts
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{
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public static class BitArrayExtensions
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{
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/// <summary>
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/// returns the next set bit or -1 if no more set bits
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/// </summary>
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/// <param name="bitArray">The array to check</param>
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/// <param name="startIndex">The index to start checking from</param>
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/// <returns>The next set bit or -1</returns>
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public static int NextSetBit(this BitArray bitArray, int startIndex)
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{
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int offset = startIndex >> 6;
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long mask = 1L << startIndex;
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while (offset < bitArray.Length)
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{
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var h = bitArray[offset] ? 1 : 0;
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do
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{
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if ((h & mask) != 0)
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{
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return startIndex;
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}
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mask <<= 1;
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startIndex++;
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}
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while (mask != 0);
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mask = 1;
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offset++;
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}
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return -1;
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}
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public static void Set(this BitArray bitArray, int start, int end)
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{
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for (int i = start; i < end; i++)
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{
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bitArray[i] = true;
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}
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}
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}
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} |