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The Open Group Base Specifications Issue 7
IEEE Std 1003.1-2008
Copyright © 2001-2008 The IEEE and The Open Group

#### NAME

> iswpunct, iswpunct_l - test for a punctuation wide-character code

#### SYNOPSIS

> ``#include <wctype.h>
> int iswpunct(wint_t` wc`);
> ``

> ``[CX] int iswpunct_l(wint_t` wc`, locale_t` locale`);``
> `
> `

#### DESCRIPTION

> For iswpunct(): [CX] The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1-2008 defers to the ISO C standard.

> The iswpunct() [CX] and iswpunct_l() functions shall test whether wc is a wide-character code representing a character of class punct in the current locale of the process, [CX] or in the locale represented by locale, respectively; see XBD Locale .

> The wc argument is a wint_t, the value of which the application shall ensure is a wide-character code corresponding to a valid character in the current locale, or equal to the value of the macro WEOF. If the argument has any other value, the behavior is undefined.

#### RETURN VALUE

> The iswpunct() [CX] and iswpunct_l() functions shall return non-zero if wc is a punctuation wide-character code; otherwise, they shall return 0.

#### ERRORS

> The iswpunct_l() function may fail if:

> [EINVAL]
>   [CX] locale is not a valid locale object handle.

The following sections are informative.

#### EXAMPLES

> None.

#### APPLICATION USAGE

> To ensure applications portability, especially across natural languages, only these functions and the functions in the reference pages listed in the SEE ALSO section should be used for character classification.

#### RATIONALE

> None.

#### FUTURE DIRECTIONS

> None.

#### SEE ALSO

> iswalnum , iswalpha , iswcntrl , iswctype , iswdigit , iswgraph , iswlower , iswprint , iswspace , iswupper , iswxdigit , setlocale , uselocale

> XBD Locale , <locale.h> , <wctype.h>

#### CHANGE HISTORY

> First released in Issue 4.

#### Issue 5

> The following change has been made in this version for alignment with ISO/IEC 9899:1990/Amendment 1:1995 (E):

> - The SYNOPSIS has been changed to indicate that this function and associated data types are now made visible by inclusion of the <wctype.h> header rather than <wchar.h>.

#### Issue 6

> The normative text is updated to avoid use of the term "must" for application requirements.

#### Issue 7

> The iswpunct_l() function is added from The Open Group Technical Standard, 2006, Extended API Set Part 4.

End of informative text.

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Copyright © 2001-2008 The IEEE and The Open Group, All Rights Reserved
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