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perf: Improve Binary

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Crsky
2026-03-23 23:27:28 +08:00
parent 4f7f84ec81
commit 747b0e5009
1 changed files with 18 additions and 0 deletions
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18
GameRes/Utility.cs
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@@ -24,33 +24,45 @@
//
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Text;
namespace GameRes.Utility
{
public static class Binary
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static uint BigEndian (uint u)
{
return u << 24 | (u & 0xff00) << 8 | (u & 0xff0000) >> 8 | u >> 24;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static int BigEndian (int i)
{
return (int)BigEndian ((uint)i);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ushort BigEndian (ushort u)
{
return (ushort)(u << 8 | u >> 8);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static short BigEndian (short i)
{
return (short)BigEndian ((ushort)i);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ulong BigEndian (ulong u)
{
return (ulong)BigEndian((uint)(u & 0xffffffff)) << 32
| (ulong)BigEndian((uint)(u >> 32));
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static long BigEndian (long i)
{
return (long)BigEndian ((ulong)i);
@@ -123,36 +135,42 @@ namespace GameRes.Utility
return GetCString (data, index, data.Length - index, Encodings.cp932);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static uint RotR (uint v, int count)
{
count &= 0x1F;
return v >> count | v << (32-count);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static uint RotL (uint v, int count)
{
count &= 0x1F;
return v << count | v >> (32-count);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ulong RotR (ulong v, int count)
{
count &= 0x3F;
return v >> count | v << (64-count);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ulong RotL (ulong v, int count)
{
count &= 0x3F;
return v << count | v >> (64-count);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static byte RotByteR (byte v, int count)
{
count &= 7;
return (byte)(v >> count | v << (8-count));
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static byte RotByteL (byte v, int count)
{
count &= 7;