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X-Hacker.org- Watcom C Library Reference - these functions operate upon wide characters of type wchar_t. the functions
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These functions operate upon wide characters of type wchar_t. The functions
test wide characters in various ways and convert them between upper and
lowercase. The following functions are defined:
iswalnum (see isalnum)
test for letter or digit
iswalpha (see isalpha)
test for letter
iswascii (see isascii)
test for ASCII character
iswcntrl (see iscntrl)
test for control character
iswdigit (see isdigit)
test for digit
iswgraph (see isgraph)
test for printable character, except space
iswlower (see islower)
test for letter in lowercase
iswprint (see isprint)
test for printable character, including space
iswpunct (see ispunct)
test for punctuation characters
iswspace (see isspace)
test for "white space" characters
iswupper (see isupper)
test for letter in uppercase
iswxdigit (see isxdigit)
test for hexadecimal digit
wctype
construct a property value for a given "property"
iswctype
test a character for a specific property
towlower (see tolower)
convert character to lowercase
towupper (see toupper)
convert character to uppercase
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