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towlower(3c)
Standard C Library Functions towlower(3C)
NAME
towlower, towlower_l - transliterate uppercase wide-character code to
lowercase
SYNOPSIS
#include <wchar.h>
wint_t towlower(wint_t wc);
wint_t towlower_l(wint_t wc, locale_t locale);
DESCRIPTION
The towlower() function has as a domain a type wint_t, the value of
which must be a character representable as a wchar_t, and must be a
wide-character code corresponding to a valid character in the current
locale or the value of WEOF. If the argument has any other value, the
argument is returned unchanged. If the argument of towlower() repre‐
sents an uppercase wide-character code, and there exists a correspond‐
ing lowercase wide-character code (as defined by character type infor‐
mation in the program locale category LC_CTYPE), the result is the cor‐
responding lowercase wide-character code. All other arguments in the
domain are returned unchanged.
The towlower_l() function is equivalent to the towlower() function,
except that the locale data used is from the locale represented by
locale.
The behavior is undefined if the locale argument to towlower_l() is the
special locale object LC_GLOBAL_LOCALE or is not a valid locale object
handle.
RETURN VALUES
On successful completion, towlower() and towlower_l() return the lower‐
case letter corresponding to the argument passed. Otherwise, they
return the argument unchanged.
ERRORS
No errors are defined.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ CSIEnabled _ Interface StabilityStandard _ MT-LevelMT-
Safe
SEE ALSO
duplocale(3C), freelocale(3C), iswalpha(3C), newlocale(3C), setlo‐
cale(3C), towupper(3C), uselocale(3C), attributes(7), standards(7)
Oracle Solaris 11.4 11 May 2021 towlower(3C)