iswupper(3)                                                 iswupper(3)

  iswupper()

  NAME

    iswupper() - upper-case wide-character test

  SYNOPSIS

    #include 

    int iswupper (wint_t wc)

  DESCRIPTION

    The iswupper(3) function tests whether wc is a wide-character code of
    class upper in the program's current locale.

    In the POSIX locale, the character class upper includes the following
    characters:
    "A"     "B"     "C"     "D"     "E"

    "F"     "G"     "H"     "I"     "J"

    "K"     "L"     "M"     "N"     "O"

    "P"     "Q"     "R"     "S"     "T"

    "U"     "V"     "W"     "X"     "Y"

    "Z"

  RETURN VALUES

    The iswupper(3) function returns zero if the wide-character tests false
    and returns non-zero if the wide-character tests true.

  SEE ALSO

    iswalnum(3)

    iswalpha(3)

    iswblank(3)

    iswcntrl(3)

    iswdigit(3)

    iswgraph(3)

    iswlower(3)

    iswprint(3)

    iswpunct(3)

    iswspace(3)

    iswxdigit(3)

    towlower(3)

    towupper(3)

  USAGE NOTES

    The iswupper function is thread safe.

    The iswupper function is not async-signal safe.