Standard library header <cwctype>
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                    This header was originally in the C standard library as <wctype.h>.
This header is part of the C-style null-terminated wide strings library.
Types
| wctrans_t | scalar type that holds locale-specific character mapping | 
| wctype_t | scalar type that holds locale-specific character classification | 
| wint_t | integer type that can hold any valid wide character and at least one more value | 
Macros
| WEOF | a non-character value of type wint_t used to indicate errors (macro constant) | 
Functions
| Character classification | |
| checks if a wide character is alphanumeric (function) | |
| checks if a wide character is alphabetic (function) | |
| checks if a wide character is lowercase (function) | |
| checks if a wide character is an uppercase character (function) | |
| checks if a wide character is a digit (function) | |
| checks if a character is a hexadecimal character (function) | |
| checks if a wide character is a control character (function) | |
| checks if a wide character is a graphical character (function) | |
| checks if a wide character is a space character (function) | |
| (C++11) | checks if a wide character is a blank character (function) | 
| checks if a wide character is a printing character (function) | |
| checks if a wide character is a punctuation character (function) | |
| classifies a wide character according to the specified LC_CTYPE category (function) | |
| looks up a character classification category in the current C locale (function) | |
| Character manipulation | |
| converts a wide character to lowercase (function) | |
| converts a wide character to uppercase (function) | |
| performs character mapping according to the specified LC_CTYPE mapping category (function) | |
| looks up a character mapping category in the current C locale (function) | |