NAME
towlower —
wide character case letter
conversion utilities
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <wctype.h>
wint_t
towlower(
wint_t
wc);
wint_t
towupper(
wint_t
wc);
DESCRIPTION
The
towlower() function converts an upper-case wide character
to the corresponding lower-case letter. The
towupper()
function converts an lower-case wide character to the corresponding upper-case
letter.
RETURN VALUES
If the argument is an upper/lower-case letter, the
tolower()
function returns the corresponding counterpart if there is one; otherwise the
argument is returned unchanged.
SEE ALSO
tolower(3),
toupper(3)
STANDARDS
The functions conform to
ISO/IEC 9899:1999
(“ISO C99”).