RtlStringCchPrintfExW

VOID RtlStringCchPrintfExW(
        WCHAR *pszDest,
        UINT64 cchDest,
        WCHAR **ppszDestEnd,
        UINT64 *pcchRemaining,
        UINT64 dwFlags,
        const WCHAR *pszFormat,
        ...){
  int v9; 
  wchar_t *v10; 
  UINT64 v11; 
  const wchar_t *v12; 
  NTSTATUS v13; 
  size_t v14; 
  int v15; 
  STRSAFE_LPWSTR ppszDestEnda; 
  size_t pcchNewDestLength[2]; 
  va_list va; 
  va_start(va, pszFormat);
  v9 = 0;
  if( (dwFlags & 0x100) != 0 )
  {
    if( !pszDest && cchDest || cchDest > 0x7FFFFFFF )
      v9 = -1073741811;
  }
  else if( cchDest - 1 > 0x7FFFFFFE )
  {
    v9 = -1073741811;
  }
  if( v9 < 0 )
  {
    if( cchDest )
      *pszDest = 0;
  }
  else
  {
    ppszDestEnda = pszDest;
    v10 = pszDest;
    pcchNewDestLength[0] = cchDest;
    v11 = cchDest;
    if( (dwFlags & 0x100) != 0 )
    {
      v12 = &::ppszDestEnd;
      if( pszFormat )
        v12 = pszFormat;
    }
    else
    {
      v12 = pszFormat;
    }
    if( (dwFlags & 0xFFFFE000) != 0 )
    {
      v15 = -1073741811;
      if( cchDest )
        *pszDest = 0;
    }
    else if( cchDest )
    {
      pcchNewDestLength[0] = 0i64;
      v13 = RtlStringVPrintfWorkerW(pszDest, cchDest, pcchNewDestLength, v12, va);
      v14 = pcchNewDestLength[0];
      v15 = v13;
      v11 = cchDest - pcchNewDestLength[0];
      pcchNewDestLength[0] = cchDest - pcchNewDestLength[0];
      v10 = &pszDest[v14];
      ppszDestEnda = v10;
      if( v13 >= 0 )
      {
        if( (dwFlags & 0x200) != 0 && v11 > 1 )
          RtlStringExHandleFillBehindNullW(&pszDest[v14], 2 * v11, dwFlags);
        goto LABEL_11;
      }
    }
    else
    {
      if( !*v12 )
      {
LABEL_11:
        if( ppszDestEnd )
          *ppszDestEnd = v10;
        if( pcchRemaining )
          *pcchRemaining = v11;
        return;
      }
      v15 = pszDest != 0i64 ? -2147483643 : -1073741811;
    }
    if( (dwFlags & 0x1C00) != 0 && cchDest )
    {
      StringExHandleOtherFlagsW(pszDest, 2 * cchDest, ppszDestEnd, (UINT64 *)&ppszDestEnda, (UINT64)pcchNewDestLength);
      v10 = ppszDestEnda;
      v11 = pcchNewDestLength[0];
    }
    if( (int)(v15 + 0x80000000) < 0 || v15 == -2147483643 )
      goto LABEL_11;
  }
}

Referenced by: