rg1/server/Sog/Core/System/BitUtils.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.IO;

namespace Sog
{
    public static class BitUtils
    {
        /// <summary>
        /// value的某一位是否是1
        /// </summary>
        /// <param name="value"></param>
        /// <param name="bit">从1开始，1-32</param>
        /// <returns></returns>
        public static bool IsBitSet(uint value, int bit)
        {
            uint bitValue = ((uint)1) << (bit - 1);

            return (value & bitValue) > 0;
        }

        /// <summary>
        /// value的某一位是否是1
        /// </summary>
        /// <param name="value"></param>
        /// <param name="bit">从1开始，1-32</param>
        /// <returns></returns>
        public static bool IsBitSet(ulong value, int bit)
        {
            ulong bitValue = ((ulong)1) << (bit - 1);

            if ((value & bitValue) > 0)
            {
                return true;
            }

            return false;
        }

        public static uint BitSet(uint value, int bit)
        {
            uint bitValue = ((uint)1) << (bit - 1);

            value |= bitValue;

            return value;
        }

        public static ulong BitSet(ulong value, int bit)
        {
            ulong bitValue = ((ulong)1) << (bit - 1);

            value |= bitValue;

            return value;
        }

        public static uint BitClear(uint value, int bit)
        {
            uint bitValue = ((uint)1) << (bit - 1);

            value &= (~bitValue);

            return value;
        }

        public static ulong BitClear(ulong value, int bit)
        {
            ulong bitValue = ((ulong)1) << (bit - 1);

            value &= (~bitValue);

            return value;
        }
    }
}