NAME

towupper, towupper_l — lower case to upper case letter conversion (wide character version)

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <wctype.h>

wint_t
towupper(wint_t wc);

#include <wctype.h>
#include <xlocale.h>

wint_t
towupper_l(wint_t wc, locale_t loc);

DESCRIPTION

The towupper() function converts a lower-case letter to the corresponding upper-case letter.

Although the towupper() function uses the current locale, the towupper_l() function may be passed a locale directly. See xlocale(3) for more information.

RETURN VALUES

If the argument is a lower-case letter, the towupper() function returns the corresponding upper-case letter if there is one; otherwise, the argument is returned unchanged.

SEE ALSO

iswupper(3), toupper(3), towlower(3), wctrans(3), xlocale(3)

STANDARDS

The towupper() function conforms to ISO/IEC 9899:1999 (“ISO C99”).