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   wcwidth    ( 3 )

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Имя (Name)

wcwidth - determine columns needed for a wide character

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Синопсис (Synopsis)

#define _XOPEN_SOURCE       /* See feature_test_macros(7) */
       #include <wchar.h>

       int wcwidth(wchar_t c);

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Описание (Description)

The wcwidth() function returns the number of columns needed to
       represent the wide character c.  If c is a printable wide
       character, the value is at least 0.  If c is null wide character
       (L'\0'), the value is 0.  Otherwise, -1 is returned.

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Возвращаемое значение (Return value)

The wcwidth() function returns the number of column positions for
       c.

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Атрибуты (Attributes)

For an explanation of the terms used in this section, see
       attributes(7).

       ┌───────────────────────────────┬───────────────┬────────────────┐
       │Interface                      │ Attribute     │ Value          │
       ├───────────────────────────────┼───────────────┼────────────────┤
       │wcwidth()                      │ Thread safety │ MT-Safe locale │
       └───────────────────────────────┴───────────────┴────────────────┘

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Стандарты (Conforming to)

POSIX.1-2001, POSIX.1-2008.

       Note that glibc before 2.2.5 used the prototype

       int wcwidth(wint_t c);

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Примечание (Note)

The behavior of wcwidth() depends on the LC_CTYPE category of the
       current locale.

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Смотри также (See also)

iswprint(3), wcswidth(3)

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