RtlpMuiRegGetInstalledLangInfoIndex

__int64 __fastcall RtlpMuiRegGetInstalledLangInfoIndex(__int64 a1, int a2, __int16 a3, __int16 *a4){
  int v5; 
  __int16 v6; 
  __int64 v7; 
  int v8; 
  __int64 v9; 
  int v11; 
  __int64 v12; 
  __int64 v13; 
  if( a1 && a2 )
  {
    switch( a2 )
    {
      case 1:
        if( a3 )
        {
          v5 = *(unsigned __int16 *)(a1 + 6);
          v6 = 0;
          if( *(_WORD *)(a1 + 6) )
          {
            v7 = *(_QWORD *)(a1 + 16);
            v8 = a3;
            while( 1 )
            {
              v9 = 28i64 * v6;
              if( *(unsigned __int16 *)(v9 + v7 + 4) == v8 && (*(_WORD *)(v9 + v7) & 0x1020) == 32 )
                break;
              if( ++v6 >= v5 )
                return 3221225473i64;
            }
LABEL_19:
            if( a4 )
              *a4 = v6;
            return 0i64;
          }
          return 3221225473i64;
        }
        break;
      case 3:
        if( a3 >= 0 )
        {
          v11 = *(unsigned __int16 *)(a1 + 6);
          v6 = 0;
          if( *(_WORD *)(a1 + 6) )
          {
            v12 = *(_QWORD *)(a1 + 16);
            while( 1 )
            {
              v13 = 28i64 * v6;
              if( *(_WORD *)(v13 + v12 + 6) == a3 && (*(_WORD *)(v13 + v12) & 0x1020) == 32 )
                break;
              if( ++v6 >= v11 )
                return 3221225473i64;
            }
            goto LABEL_19;
          }
          return 3221225473i64;
        }
        break;
      case 2:
        if( a3 >= 0 && a3 < (int)*(unsigned __int16 *)(a1 + 6) )
        {
          if( (*(_WORD *)(28i64 * a3 + *(_QWORD *)(a1 + 16)) & 0x1020) == 32 )
          {
            if( a4 )
              *a4 = a3;
            return 0i64;
          }
          return 3221225473i64;
        }
        break;
      default:
        return 3221225473i64;
    }
  }
  return 3221225485i64;
}

Referenced by: