Crc32Helper.cs

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using System.Runtime.InteropServices;
 
namespace System.IO.Compression;
 
internal static class Crc32Helper
{
    public unsafe static uint UpdateCrc32(uint crc32, byte[] buffer, int offset, int length)
    {
        fixed (byte* buffer2 = &buffer[offset])
        {
            return global::Interop.zlib.crc32(crc32, buffer2, length);
        }
    }
 
    public unsafe static uint UpdateCrc32(uint crc32, ReadOnlySpan<byte> buffer)
    {
        fixed (byte* buffer2 = &MemoryMarshal.GetReference(buffer))
        {
            return global::Interop.zlib.crc32(crc32, buffer2, buffer.Length);
        }
    }
}