|
libwchar2 0.0.10
|
iswlower - test for lowercase wide character
The iswlower() function is the wide-character equivalent of the islower(3) function. It tests whether wc is a wide character belonging to the wide-character class lower.
The wide-character class lower is a subclass of the wide-character class alpha, and therefore also a subclass of the wide-character class alnum, of the wide-character class graph and of the wide- character class print.
Being a subclass of the wide-character class print, the wide-charac- ter class lower is disjoint from the wide-character class cntrl.
Being a subclass of the wide-character class graph, the wide-charac- ter class lower is disjoint from the wide-character class space and its subclass blank.
Being a subclass of the wide-character class alnum, the wide-charac- ter class lower is disjoint from the wide-character class punct.
Being a subclass of the wide-character class alpha, the wide-charac- ter class lower is disjoint from the wide-character class digit.
The wide-character class lower contains at least those characters wc which are equal to towlower(wc) and different from towupper(wc).
The wide-character class lower always contains at least the letters a to z.
The iswlower() function returns nonzero if wc is a wide character belonging to the wide-character class lower.
Otherwise, it returns zero.
The behavior of iswlower() depends on the LC_CTYPE category of the current locale.
This function is not very appropriate for dealing with Unicode characters, because Unicode knows about three cases: upper, lower and title case.
1.8.14