towupper()

Convert a wide character to uppercase

Synopsis:

#include <wctype.h>

wint_t towupper( wint_t wc );

Arguments:

wc: The wide character that you want to convert. This argument must be a wide-character code that corresponds to a valid character in the current locale, or must be WEOF; otherwise, the function's behavior is undefined.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The towupper() function converts wc to an uppercase letter if wc represents a lowercase letter.

Returns:

The corresponding uppercase letter when the argument is a lowercase letter; otherwise, the original wide character is returned. If the argument doesn't correspond to a valid character in the current locale and isn't WEOF, the function's behavior is undefined.

Classification:

ANSI, POSIX 1003.1

Safety:
Cancellation point	No
Interrupt handler	Yes
Signal handler	Yes
Thread	Yes