public int Wrap(ReadOnlySpan <byte> src, Span <byte> dst)
{
var dstSize = Options.AdvancedParams != null
? ExternMethods.ZSTD_compress2(cctx, dst, (size_t)dst.Length, src, (size_t)src.Length)
: Options.Cdict == IntPtr.Zero
? ExternMethods.ZSTD_compressCCtx(cctx, dst, (size_t)dst.Length, src, (size_t)src.Length, Options.CompressionLevel)
: ExternMethods.ZSTD_compress_usingCDict(cctx, dst, (size_t)dst.Length, src, (size_t)src.Length, Options.Cdict);
return((int)dstSize.EnsureZstdSuccess());
}