Function toupperw

Libraries/unrar/unicode.cpp:522–533

int toupperw(int ch)
{
#if defined(_WIN_ALL)
  // CharUpper is more reliable than towupper in Windows, which seems to be
  // C locale dependent even in Unicode version. For example, towupper failed
  // to convert lowercase Russian characters. Use 0xffff mask to prevent crash
  // if value larger than 0xffff is passed to this function.
  return (int)(INT_PTR)CharUpper((wchar *)(INT_PTR)(ch&0xffff));
#else
  return towupper(ch);
#endif
}


int tolowerw(int ch)