Test Claude-Code: ReadTextContent

I want to test AI programming, but Claude-Code blocks Chinese users. I would be very grateful if you could implement a function ReadTextContent using Claude-Code. The problem is as follows:

Code:

---

Please complete a function in VB6 to read file content from a file, with the function declaration as follows:

Public Function ReadTextContent(FileName As String, Optional ByVal IsRaw16Bit As Boolean = False, Optional ByVal CodePage As MSCodePages) As String

End Function

Note: the constants of MSCodePages are defined as follows:

Enum MSCodePages
    CP_ACP            = 0          ' Default ANSI code page.
    CP_UTF8            = 65001      ' UTF8.
    CP_UTF16_LE        = 1200      ' UTF16 - little endian.
    CP_UTF16_BE        = 1201      ' UTF16 - big endian.
    CP_UTF32_LE        = 12000      ' UTF32 - little endian.
    CP_UTF32_BE        = 12001      ' UTF32 - big endian.
    CP_UNKNOWN = -1
End  Enum

---

If Claude-Code can complete the above function, please post the result. I'll compare the performance of the code generated by Claude-Code with the performance of RC6.ReadTextContent. Thanks!

Note:
Please do not modify the code generated by Claude-Code. I want to know how accurate the code generated by Claude-Code is.

I don't have a Claude subscription, but I ran it past ChatGPT to see what it would come up with. Below is directly from ChatGPT and is unaltered/untested...you can tell I've been coding with it since it uses my "l_" prefix style :) Interesting that it picked that up from me.

--------------------------------- START OF CHATGPT OUTPUT

I’ll treat this as production VB6 rather than a toy example: byte-safe file reading, BOM detection, optional raw UTF-16 handling, and explicit code page conversion without depending on ADODB.Stream.

One important VB6 wrinkle: with the exact signature shown, an omitted CodePage will be indistinguishable from CP_ACP because CP_ACP = 0. The implementation below still honors BOMs first, so UTF-8/UTF-16 files will read correctly even when CodePage is omitted.

Thought for 51s

Here is my best-effort VB6 implementation. It reads the file as bytes, detects BOMs, supports ANSI/UTF-8/UTF-16/UTF-32, and returns a normal VB6 Unicode String.

Code:

---

Option Explicit

Private Const MB_ERR_INVALID_CHARS As Long = &H8&
Private Const ERR_BASE As Long = vbObjectError + 513

Private Declare Function MultiByteToWideChar Lib "kernel32" ( _
    ByVal CodePage As Long, _
    ByVal dwFlags As Long, _
    ByRef lpMultiByteStr As Any, _
    ByVal cbMultiByte As Long, _
    ByVal lpWideCharStr As Long, _
    ByVal cchWideChar As Long _
) As Long

Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" ( _
    ByVal Destination As Long, _
    ByRef Source As Any, _
    ByVal Length As Long _
)

Public Function ReadTextContent( _
    FileName As String, _
    Optional ByVal IsRaw16Bit As Boolean = False, _
    Optional ByVal CodePage As MSCodePages _
) As String

    Dim l_FileNum As Integer
    Dim l_FileLen As Long
    Dim la_Bytes() As Byte
    Dim l_CodePage As MSCodePages
    Dim l_Offset As Long
    Dim l_HasBom As Boolean

    On Error GoTo CleanFail

    l_FileNum = FreeFile

    Open FileName For Binary Access Read As #l_FileNum

    l_FileLen = LOF(l_FileNum)

    If l_FileLen = 0 Then
        Close #l_FileNum
        ReadTextContent = vbNullString
        Exit Function
    End If

    ReDim la_Bytes(0 To l_FileLen - 1) As Byte
    Get #l_FileNum, , la_Bytes

    Close #l_FileNum
    l_FileNum = 0

    l_CodePage = CodePage
    l_Offset = 0

    ' ---------------------------------------------------------------------
    ' BOM detection.
    '
    ' Important:
    '  UTF-32 LE BOM starts FF FE 00 00, which also starts like UTF-16 LE,
    '  so check UTF-32 before UTF-16.
    ' ---------------------------------------------------------------------
    If l_FileLen >= 4 Then
        If la_Bytes(0) = &HFF And la_Bytes(1) = &HFE And _
          la_Bytes(2) = &H0 And la_Bytes(3) = &H0 Then

            l_CodePage = CP_UTF32_LE
            l_Offset = 4
            l_HasBom = True

        ElseIf la_Bytes(0) = &H0 And la_Bytes(1) = &H0 And _
              la_Bytes(2) = &HFE And la_Bytes(3) = &HFF Then

            l_CodePage = CP_UTF32_BE
            l_Offset = 4
            l_HasBom = True
        End If
    End If

    If Not l_HasBom Then
        If l_FileLen >= 3 Then
            If la_Bytes(0) = &HEF And la_Bytes(1) = &HBB And la_Bytes(2) = &HBF Then
                l_CodePage = CP_UTF8
                l_Offset = 3
                l_HasBom = True
            End If
        End If
    End If

    If Not l_HasBom Then
        If l_FileLen >= 2 Then
            If la_Bytes(0) = &HFF And la_Bytes(1) = &HFE Then
                l_CodePage = CP_UTF16_LE
                l_Offset = 2
                l_HasBom = True

            ElseIf la_Bytes(0) = &HFE And la_Bytes(1) = &HFF Then
                l_CodePage = CP_UTF16_BE
                l_Offset = 2
                l_HasBom = True
            End If
        End If
    End If

    ' ---------------------------------------------------------------------
    ' If no BOM was found, IsRaw16Bit means "treat the file bytes as raw
    ' little-endian UTF-16", which is how VB6 stores String data internally.
    '
    ' With the exact function declaration supplied, omitted CodePage defaults
    ' to 0, which is CP_ACP. Therefore, CP_UNKNOWN can only be detected if the
    ' caller explicitly passes CP_UNKNOWN.
    ' ---------------------------------------------------------------------
    If Not l_HasBom Then
        If IsRaw16Bit Then
            l_CodePage = CP_UTF16_LE
        ElseIf l_CodePage = CP_UNKNOWN Then
            l_CodePage = CP_ACP
        End If
    End If

    Select Case l_CodePage

        Case CP_ACP, CP_UTF8
            ReadTextContent = BytesToUnicodeByCodePage(la_Bytes, l_Offset, l_FileLen - l_Offset, l_CodePage)

        Case CP_UTF16_LE
            ReadTextContent = Utf16LeBytesToString(la_Bytes, l_Offset, l_FileLen - l_Offset)

        Case CP_UTF16_BE
            ReadTextContent = Utf16BeBytesToString(la_Bytes, l_Offset, l_FileLen - l_Offset)

        Case CP_UTF32_LE
            ReadTextContent = Utf32BytesToString(la_Bytes, l_Offset, l_FileLen - l_Offset, True)

        Case CP_UTF32_BE
            ReadTextContent = Utf32BytesToString(la_Bytes, l_Offset, l_FileLen - l_Offset, False)

        Case Else
            Err.Raise ERR_BASE + 1, "ReadTextContent", _
                      "Unsupported code page: " & CStr(l_CodePage)

    End Select

    Exit Function

CleanFail:
    On Error Resume Next

    If l_FileNum <> 0 Then
        Close #l_FileNum
    End If

    Err.Raise Err.Number, Err.Source, Err.Description

End Function

Private Function BytesToUnicodeByCodePage( _
    ByRef Bytes() As Byte, _
    ByVal Offset As Long, _
    ByVal ByteCount As Long, _
    ByVal CodePage As Long _
) As String

    Dim l_Flags As Long
    Dim l_Chars As Long
    Dim l_Result As String

    If ByteCount <= 0 Then
        BytesToUnicodeByCodePage = vbNullString
        Exit Function
    End If

    If CodePage = CP_UTF8 Then
        l_Flags = MB_ERR_INVALID_CHARS
    Else
        l_Flags = 0
    End If

    l_Chars = MultiByteToWideChar( _
        CodePage, _
        l_Flags, _
        Bytes(Offset), _
        ByteCount, _
        0, _
        0 _
    )

    ' Some older Windows configurations are fussy about MB_ERR_INVALID_CHARS.
    ' Retry UTF-8 without the strict flag before giving up.
    If l_Chars = 0 And l_Flags <> 0 Then
        l_Flags = 0

        l_Chars = MultiByteToWideChar( _
            CodePage, _
            l_Flags, _
            Bytes(Offset), _
            ByteCount, _
            0, _
            0 _
        )
    End If

    If l_Chars = 0 Then
        Err.Raise ERR_BASE + 2, "ReadTextContent", _
                  "Unable to convert file content using code page " & CStr(CodePage) & "."
    End If

    l_Result = String$(l_Chars, vbNullChar)

    l_Chars = MultiByteToWideChar( _
        CodePage, _
        l_Flags, _
        Bytes(Offset), _
        ByteCount, _
        StrPtr(l_Result), _
        l_Chars _
    )

    If l_Chars = 0 Then
        Err.Raise ERR_BASE + 3, "ReadTextContent", _
                  "Unable to convert file content using code page " & CStr(CodePage) & "."
    End If

    BytesToUnicodeByCodePage = l_Result

End Function

Private Function Utf16LeBytesToString( _
    ByRef Bytes() As Byte, _
    ByVal Offset As Long, _
    ByVal ByteCount As Long _
) As String

    Dim l_Result As String

    If ByteCount <= 0 Then
        Utf16LeBytesToString = vbNullString
        Exit Function
    End If

    If (ByteCount Mod 2) <> 0 Then
        Err.Raise ERR_BASE + 4, "ReadTextContent", _
                  "Invalid UTF-16 little-endian content. Byte count is odd."
    End If

    l_Result = String$(ByteCount \ 2, vbNullChar)

    CopyMemory StrPtr(l_Result), Bytes(Offset), ByteCount

    Utf16LeBytesToString = l_Result

End Function

Private Function Utf16BeBytesToString( _
    ByRef Bytes() As Byte, _
    ByVal Offset As Long, _
    ByVal ByteCount As Long _
) As String

    Dim la_Swapped() As Byte
    Dim ii As Long

    If ByteCount <= 0 Then
        Utf16BeBytesToString = vbNullString
        Exit Function
    End If

    If (ByteCount Mod 2) <> 0 Then
        Err.Raise ERR_BASE + 5, "ReadTextContent", _
                  "Invalid UTF-16 big-endian content. Byte count is odd."
    End If

    ReDim la_Swapped(0 To ByteCount - 1) As Byte

    For ii = 0 To ByteCount - 1 Step 2
        la_Swapped(ii) = Bytes(Offset + ii + 1)
        la_Swapped(ii + 1) = Bytes(Offset + ii)
    Next ii

    Utf16BeBytesToString = Utf16LeBytesToString(la_Swapped, 0, ByteCount)

End Function

Private Function Utf32BytesToString( _
    ByRef Bytes() As Byte, _
    ByVal Offset As Long, _
    ByVal ByteCount As Long, _
    ByVal IsLittleEndian As Boolean _
) As String

    Dim l_Units As Long
    Dim la_Words() As Integer
    Dim l_WordCount As Long
    Dim ii As Long

    Dim d_CodePoint As Double
    Dim l_CodePoint As Long
    Dim l_Temp As Long
    Dim l_HighSurrogate As Long
    Dim l_LowSurrogate As Long

    Dim l_Result As String

    If ByteCount <= 0 Then
        Utf32BytesToString = vbNullString
        Exit Function
    End If

    If (ByteCount Mod 4) <> 0 Then
        Err.Raise ERR_BASE + 6, "ReadTextContent", _
                  "Invalid UTF-32 content. Byte count is not divisible by 4."
    End If

    l_Units = ByteCount \ 4

    ' Worst case: every UTF-32 code point becomes a UTF-16 surrogate pair.
    ReDim la_Words(0 To (l_Units * 2) - 1) As Integer

    For ii = 0 To ByteCount - 1 Step 4

        If IsLittleEndian Then
            d_CodePoint = CDbl(Bytes(Offset + ii)) + _
                          CDbl(Bytes(Offset + ii + 1)) * 256# + _
                          CDbl(Bytes(Offset + ii + 2)) * 65536# + _
                          CDbl(Bytes(Offset + ii + 3)) * 16777216#
        Else
            d_CodePoint = CDbl(Bytes(Offset + ii + 3)) + _
                          CDbl(Bytes(Offset + ii + 2)) * 256# + _
                          CDbl(Bytes(Offset + ii + 1)) * 65536# + _
                          CDbl(Bytes(Offset + ii)) * 16777216#
        End If

        If d_CodePoint > CDbl(&H10FFFF) Then
            Err.Raise ERR_BASE + 7, "ReadTextContent", _
                      "Invalid UTF-32 content. Code point is greater than U+10FFFF."
        End If

        l_CodePoint = CLng(d_CodePoint)

        If l_CodePoint >= &HD800& And l_CodePoint <= &HDFFF& Then
            Err.Raise ERR_BASE + 8, "ReadTextContent", _
                      "Invalid UTF-32 content. Code point is in the UTF-16 surrogate range."
        End If

        If l_CodePoint < &H10000 Then
            la_Words(l_WordCount) = UShortToInteger(l_CodePoint)
            l_WordCount = l_WordCount + 1
        Else
            l_Temp = l_CodePoint - &H10000

            l_HighSurrogate = &HD800& + (l_Temp \ &H400&)
            l_LowSurrogate = &HDC00& + (l_Temp And &H3FF&)

            la_Words(l_WordCount) = UShortToInteger(l_HighSurrogate)
            l_WordCount = l_WordCount + 1

            la_Words(l_WordCount) = UShortToInteger(l_LowSurrogate)
            l_WordCount = l_WordCount + 1
        End If

    Next ii

    If l_WordCount = 0 Then
        Utf32BytesToString = vbNullString
        Exit Function
    End If

    l_Result = String$(l_WordCount, vbNullChar)

    CopyMemory StrPtr(l_Result), la_Words(0), l_WordCount * 2

    Utf32BytesToString = l_Result

End Function

Private Function UShortToInteger(ByVal Value As Long) As Integer

    If Value > &H7FFF& Then
        UShortToInteger = CInt(Value - &H10000)
    Else
        UShortToInteger = CInt(Value)
    End If

End Function

---

One small improvement I’d make to the declaration, if you’re allowed to change it, is this:

Code:

---

Public Function ReadTextContent( _
    FileName As String, _
    Optional ByVal IsRaw16Bit As Boolean = False, _
    Optional ByVal CodePage As MSCodePages = CP_UNKNOWN _
) As String

---

Without = CP_UNKNOWN, omitted CodePage becomes 0, which is also CP_ACP, so the function cannot know whether the caller intentionally requested ANSI or simply omitted the argument. The implementation above works around that reasonably by letting BOM detection take priority.

--------------------- END OF CHATGPT OUTPUT

Code:

---

' Win32 API declarations (place in a module)
Private Declare Function MultiByteToWideChar Lib "kernel32" ( _
    ByVal CodePage As Long, _
    ByVal dwFlags As Long, _
    ByVal lpMultiByteStr As Long, _
    ByVal cchMultiByte As Long, _
    ByVal lpWideCharStr As Long, _
    ByVal cchWideChar As Long) As Long

Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" ( _
    Destination As Any, Source As Any, ByVal Length As Long)

Public Function ReadTextContent(FileName As String, _
                                Optional ByVal IsRaw16Bit As Boolean = False, _
                                Optional ByVal CodePage As MSCodePages = CP_ACP) As String

    Dim iFile      As Integer
    Dim lFileLen    As Long
    Dim abBytes()  As Byte
    Dim lBOMLen    As Long
    Dim lDetected  As MSCodePages

    ' --- 1. Read entire file into byte array ---
    iFile = FreeFile
    Open FileName For Binary Access Read As #iFile
    lFileLen = LOF(iFile)
    If lFileLen = 0 Then
        Close #iFile
        ReadTextContent = ""
        Exit Function
    End If
    ReDim abBytes(0 To lFileLen - 1)
    Get #iFile, , abBytes
    Close #iFile

    ' --- 2. Raw 16-bit shortcut (no BOM handling, straight copy into BSTR) ---
    If IsRaw16Bit Then
        ' Treat bytes as raw UTF-16 LE pairs; truncate odd trailing byte if any
        Dim lChars As Long
        lChars = lFileLen \ 2
        Dim sRaw As String
        sRaw = String(lChars, vbNullChar)
        CopyMemory ByVal StrPtr(sRaw), abBytes(0), lChars * 2
        ReadTextContent = sRaw
        Exit Function
    End If

    ' --- 3. BOM detection (overrides CodePage parameter) ---
    lDetected = CP_UNKNOWN
    lBOMLen = 0

    If lFileLen >= 4 Then
        If abBytes(0) = &HFF And abBytes(1) = &HFE And _
          abBytes(2) = 0    And abBytes(3) = 0 Then
            lDetected = CP_UTF32_LE : lBOMLen = 4
        ElseIf abBytes(0) = 0    And abBytes(1) = 0 And _
              abBytes(2) = &HFE And abBytes(3) = &HFF Then
            lDetected = CP_UTF32_BE : lBOMLen = 4
        End If
    End If

    If lDetected = CP_UNKNOWN And lFileLen >= 3 Then
        If abBytes(0) = &HEF And abBytes(1) = &HBB And abBytes(2) = &HBF Then
            lDetected = CP_UTF8 : lBOMLen = 3
        End If
    End If

    If lDetected = CP_UNKNOWN And lFileLen >= 2 Then
        If abBytes(0) = &HFF And abBytes(1) = &HFE Then
            lDetected = CP_UTF16_LE : lBOMLen = 2
        ElseIf abBytes(0) = &HFE And abBytes(1) = &HFF Then
            lDetected = CP_UTF16_BE : lBOMLen = 2
        End If
    End If

    ' Fall back to caller-supplied CodePage if no BOM found
    If lDetected = CP_UNKNOWN Then lDetected = CodePage

    ' --- 4. Decode payload (after BOM) ---
    Dim lPayload As Long
    lPayload = lFileLen - lBOMLen
    If lPayload <= 0 Then
        ReadTextContent = ""
        Exit Function
    End If

    Select Case lDetected

        ' ----------------------------------------------------------------
        Case CP_UTF16_LE
            ' Native VB6 format: straight copy
            Dim lU16Chars As Long
            lU16Chars = lPayload \ 2
            Dim sU16 As String
            sU16 = String(lU16Chars, vbNullChar)
            CopyMemory ByVal StrPtr(sU16), abBytes(lBOMLen), lU16Chars * 2
            ReadTextContent = sU16

        ' ----------------------------------------------------------------
        Case CP_UTF16_BE
            ' Swap every byte pair, then copy
            Dim i As Long
            Dim lBEChars As Long
            lBEChars = lPayload \ 2
            Dim sBE As String
            sBE = String(lBEChars, vbNullChar)
            Dim abSwapped() As Byte
            ReDim abSwapped(0 To lBEChars * 2 - 1)
            For i = 0 To lBEChars - 1
                abSwapped(i * 2)    = abBytes(lBOMLen + i * 2 + 1)
                abSwapped(i * 2 + 1) = abBytes(lBOMLen + i * 2)
            Next i
            CopyMemory ByVal StrPtr(sBE), abSwapped(0), lBEChars * 2
            ReadTextContent = sBE

        ' ----------------------------------------------------------------
        Case CP_UTF32_LE, CP_UTF32_BE
            ' Convert each UTF-32 codepoint to UTF-16 LE manually.
            ' Codepoints <= U+FFFF  -> single UTF-16 unit
            ' Codepoints >  U+FFFF  -> surrogate pair
            Dim lCP32Count As Long
            lCP32Count = lPayload \ 4
            Dim abU16Out() As Byte
            ReDim abU16Out(0 To lCP32Count * 4 - 1)  ' worst case (all surrogates)
            Dim lOutIdx As Long
            lOutIdx = 0
            Dim j As Long
            For j = 0 To lCP32Count - 1
                Dim lBase As Long
                lBase = lBOMLen + j * 4
                Dim cp As Long
                If lDetected = CP_UTF32_LE Then
                    ' little endian: byte0 is LSB
                    cp = CLng(abBytes(lBase)) Or _
                        (CLng(abBytes(lBase + 1)) * &H100&) Or _
                        (CLng(abBytes(lBase + 2)) * &H10000) Or _
                        (CLng(abBytes(lBase + 3)) * &H1000000)
                Else
                    ' big endian: byte0 is MSB
                    cp = (CLng(abBytes(lBase))    * &H1000000) Or _
                        (CLng(abBytes(lBase + 1)) * &H10000) Or _
                        (CLng(abBytes(lBase + 2)) * &H100&) Or _
                          CLng(abBytes(lBase + 3))
                End If
                ' Clamp to valid Unicode range
                If cp < 0 Or cp > &H10FFFF Then cp = &HFFFD  ' replacement char

                If cp <= &HFFFF Then
                    abU16Out(lOutIdx)    = CByte(cp And &HFF)
                    abU16Out(lOutIdx + 1) = CByte((cp \ &H100) And &HFF)
                    lOutIdx = lOutIdx + 2
                Else
                    ' Surrogate pair
                    Dim cpAdj As Long
                    cpAdj = cp - &H10000
                    Dim wHigh As Long, wLow As Long
                    wHigh = &HD800 + (cpAdj \ &H400)
                    wLow  = &HDC00 + (cpAdj And &H3FF)
                    abU16Out(lOutIdx)    = CByte(wHigh And &HFF)
                    abU16Out(lOutIdx + 1) = CByte((wHigh \ &H100) And &HFF)
                    abU16Out(lOutIdx + 2) = CByte(wLow And &HFF)
                    abU16Out(lOutIdx + 3) = CByte((wLow \ &H100) And &HFF)
                    lOutIdx = lOutIdx + 4
                End If
            Next j
            Dim lU32ResultChars As Long
            lU32ResultChars = lOutIdx \ 2
            Dim sU32 As String
            sU32 = String(lU32ResultChars, vbNullChar)
            CopyMemory ByVal StrPtr(sU32), abU16Out(0), lOutIdx
            ReadTextContent = sU32

        ' ----------------------------------------------------------------
        Case CP_UTF8
            ' Use Win32 to convert UTF-8 -> UTF-16 LE
            Dim lU8WideLen As Long
            lU8WideLen = MultiByteToWideChar(65001, 0, VarPtr(abBytes(lBOMLen)), lPayload, 0, 0)
            If lU8WideLen > 0 Then
                Dim sU8 As String
                sU8 = String(lU8WideLen, vbNullChar)
                MultiByteToWideChar 65001, 0, VarPtr(abBytes(lBOMLen)), lPayload, StrPtr(sU8), lU8WideLen
                ReadTextContent = sU8
            End If

        ' ----------------------------------------------------------------
        Case Else
            ' CP_ACP or any other ANSI code page: let Win32 handle it
            Dim lACPWideLen As Long
            lACPWideLen = MultiByteToWideChar(lDetected, 0, VarPtr(abBytes(lBOMLen)), lPayload, 0, 0)
            If lACPWideLen > 0 Then
                Dim sACP As String
                sACP = String(lACPWideLen, vbNullChar)
                MultiByteToWideChar lDetected, 0, VarPtr(abBytes(lBOMLen)), lPayload, StrPtr(sACP), lACPWideLen
                ReadTextContent = sACP
            End If

    End Select

End Function

---

Here’s a complete implementation. I’ll make a few assumptions explicit:
• If IsRaw16Bit = True, the file is read as raw UTF-16 LE (VB6’s native String format) without BOM processing — useful when you already know it’s a raw binary Unicode dump.
• If IsRaw16Bit = False, BOM detection takes priority over the CodePage parameter; if no BOM is found, CodePage is used as fallback.
• UTF-32 is converted via Win32 MultiByteToWideChar after manually swapping BE to LE where needed.


A few notes worth calling out:
BOM priority over CodePage — This matches what virtually every real-world text editor does. If you want to force a specific encoding even when a BOM is present, you’d need to add a ByVal IgnoreBOM As Boolean = False parameter and skip the detection block.
UTF-32 via manual loop, not MultiByteToWideChar — Windows doesn’t support UTF-32 in MultiByteToWideChar at all, so the surrogate-pair math has to be done by hand. The lOutIdx tracks actual bytes written since surrogates make the output larger than the input codepoint count.
The CLng(abBytes(...)) * &H1000000 trick — VB6 integer literals are Integer by default up to 32767, so without &H1000000 (Long literal) the shift would overflow. Worth being aware of if you ever modify that arithmetic.
CP_UNKNOWN as fallback — If neither a BOM is detected nor a meaningful CodePage is passed, it falls through to the Case Else which calls MultiByteToWideChar with -1. Windows will reject that and return 0 characters, giving you an empty string rather than garbage or a crash. You may want to handle that edge case more explicitly depending on your use.????????????????

————
Directly from Claude with the given prompt

Hi jpbro and Arnoutdv,

Thank you very much for your help. I tested the code generated by ChatGPT and Claude-Code respectively, and both of them worked accurately. This is really amazing.

Regarding performance, in IDE mode, the performance of the code from RC6, ChatGPT, and ClaudeCode is almost the same. In binary mode, the RC6 code is slightly faster, about 3%-5% faster. This difference in performance is almost negligible.

The new test cases include code generated by DeepSeek.

Note:
Test results differ between IDE mode and Bin mode.