ISWPUNCT(3POSIX)

💖 ISWPUNCT(3POSIX) 💖

ok so bestie, welcome to the POSIX Programmer's Manual ✨ this one's ISWPUNCT(3POSIX), and we're about to learn whether a wide character is, like, punctuation. yes really. that's the whole gig. she's simple, she's iconic, she ate 💅

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🫶 PROLOG 🫶

ok first things first, real talk:

this manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ — so pls consult the corresponding Linux manual page for the deets on Linux behavior. also possible: the interface may not be implemented on Linux at all. so like. vibe check your platform first, bestie. 😭

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✨ NAME ✨

iswpunct, iswpunct_l — test for a punctuation wide-character code 🎀

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🌸 SYNOPSIS 🌸

#include <wctype.h>

int iswpunct(wint_t wc);
int iswpunct_l(wint_t wc, locale_t locale);

like. two functions. one header. we love a low-effort queen. 💜

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🦋 DESCRIPTION 🦋

ok so for iswpunct(): 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.1‐2017 defers to the ISO C standard. periodt.

The iswpunct() and iswpunct_l() functions shall test whether wc is a wide-character code representing a character of class punct in the current locale, or in the locale represented by locale, respectively. see the Base Definitions volume of POSIX.1‐2017, Chapter 7, Locale. iykyk 📖

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 locale used by the function, or equal to the value of the macro WEOF.

⚠️ bestie listen. If the argument has any other value, the behavior is undefined. not "kinda weird", not "probably fine" — undefined. do not test fate. do not pass garbage. 🙈

also, and this is the important part: the behavior is undefined if the locale argument to iswpunct_l() is the special locale object LC_GLOBAL_LOCALE, or if it's not a valid locale object handle. so like. hand her a real locale or hand her nothing. 💀

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👑 RETURN VALUE 👑

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

that's it. that's the whole answer. yes/no. binary. main character energy. ⭐

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💀 ERRORS 💀

No errors are defined.

The following sections are informative. (translation: the drama is over, this next part is just ✨ lore ✨)

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🍓 EXAMPLES 🍓

None. 😭 she said "no examples, figure it out" and honestly? respect.

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💅 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. don't get cute with it, bestie. stick to the approved list. 🫶

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🧚 RATIONALE 🧚

None. (no thoughts, head empty, still correct ✨)

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🌈 FUTURE DIRECTIONS 🌈

None. she's not going anywhere. she's eternal. 👑

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🔥 SEE ALSO 🔥

• iswalnum()
• iswalpha()
• iswcntrl()
• iswctype()
• iswdigit()
• iswgraph()
• iswlower()
• iswprint()
• iswspace()
• iswupper()
• iswxdigit()
• setlocale()
• uselocale()

The Base Definitions volume of POSIX.1‐2017, Chapter 7, Locale, <locale.h>, <wctype.h>

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🎀 COPYRIGHT 🎀

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .

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and that's the whole page, bestie!! this lil masterpiece came to you from IEEE/The Open Group, dated 2017 💖 go forth and punctuate responsibly, mwah 🫶✨🎀