Function CharToUpper

MdePkg/Library/BaseLib/String.c:587–598

Convert a Unicode character to upper case only if it maps to a valid small-case ASCII character. This internal function only deal with Unicode character which maps to a valid small-case ASCII character, i.e. L'a' to L'z'. For other Unicode character, the input character is returned directly. @param Char The character to convert. @retval LowerCharacter If the Char is

**/
CHAR16
EFIAPI
CharToUpper (
  IN      CHAR16                    Char
  )
{
  if ((Char >= L'a') && (Char <= L'z')) {
    return (CHAR16) (Char - (L'a' - L'A'));
  }

  return Char;
}

/**
  Convert a Unicode character to numerical value.