Standard library header <wctype.h> (C95)

 

C

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Language

Headers

Type support

Program utilities

Variadic function support

Error handling

Dynamic memory management

Strings library

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Numerics

Date and time utilities

Input/output support

Localization support

Concurrency support (C11)

Technical Specifications

Symbol index

 

Standard Library headers

<assert.h> <complex.h> (C99) <ctype.h> <errno.h> <fenv.h> (C99) <float.h> <inttypes.h> (C99)     <iso646.h> (C95) <limits.h> <locale.h> <math.h>

<setjmp.h> <signal.h> <stdalign.h> (C11*) <stdarg.h> <stdatomic.h> (C11)     <stdbit.h> (C23) <stdbool.h> (C99*) <stdckdint.h> (C23) <stddef.h> <stdint.h> (C99) <stdio.h>

<stdlib.h> <stdmchar.h> (C29) <stdnoreturn.h> (C11*) <string.h> <tgmath.h> (C99) <threads.h> (C11) <time.h> <uchar.h> (C11) <wchar.h> (C95) <wctype.h> (C95)

 

This header is part of wide character classification and mapping utilities library.

Functions

Character classification
iswalnum (C95)	checks if a wide character is alphanumeric (function)
iswalpha (C95)	checks if a wide character is alphabetic (function)
iswlower (C95)	checks if a wide character is an lowercase character (function)
iswupper (C95)	checks if a wide character is an uppercase character (function)
iswdigit (C95)	checks if a wide character is a digit (function)
iswxdigit (C95)	checks if a wide character is a hexadecimal character (function)
iswcntrl (C95)	checks if a wide character is a control character (function)
iswgraph (C95)	checks if a wide character is a graphical character (function)
iswspace (C95)	checks if a wide character is a space character (function)
iswblank (C99)	checks if a wide character is a blank character (function)
iswprint (C95)	checks if a wide character is a printing character (function)
iswpunct (C95)	checks if a wide character is a punctuation character (function)
iswctype (C95)	classifies a wide character according to the specified LC_CTYPE category (function)
wctype (C95)	looks up a character classification category in the current C locale (function)
Character manipulation
towlower (C95)	converts a wide character to lowercase (function)
towupper (C95)	converts a wide character to uppercase (function)
towctrans (C95)	performs character mapping according to the specified LC_CTYPE mapping category (function)
wctrans (C95)	looks up a character mapping category in the current C locale (function)

Types

wint_t (C95)	integer type that can hold any valid wide character and at least one more value (typedef)
wctrans_t (C95)	scalar type that holds locale-specific character mapping (typedef)
wctype_t (C95)	scalar type that holds locale-specific character classification (typedef)

Macros

WEOF (C95)

a non-character value of type wint_t used to indicate errors (macro constant)

Synopsis

typedef /* see description */ wctrans_t;
typedef /* see description */ wctype_t;
typedef /* see description */ wint_t;
 
#define WEOF /* see description */
 
int iswalnum(wint_t wc);
int iswalpha(wint_t wc);
int iswblank(wint_t wc);
int iswcntrl(wint_t wc);
int iswdigit(wint_t wc);
int iswgraph(wint_t wc);
int iswlower(wint_t wc);
int iswprint(wint_t wc);
int iswpunct(wint_t wc);
int iswspace(wint_t wc);
int iswupper(wint_t wc);
int iswxdigit(wint_t wc);
int iswctype(wint_t wc, wctype_t desc);
wctype_t wctype(const char* property);
wint_t towlower(wint_t wc);
wint_t towupper(wint_t wc);
wint_t towctrans(wint_t wc, wctrans_t desc);
wctrans_t wctrans(const char* property);