VSWPRINTF(3P)

💖 VSWPRINTF(3P) 💖

okay bestie, welcome to the POSIX Programmer's Manual page for vswprintf — it lives in section 3P of the POSIX Programmer's Manual, and we're gonna get you acquainted. pull up a chair, grab a boba 🧋

✨ PROLOG ✨

so like, heads up before we even start: this manual page is part of the POSIX Programmer's Manual. that means it's the spec version, not necessarily the "what your laptop actually does" version.

• the Linux implementation of this interface may differ — so if you're on Linux and something looks off, go consult the corresponding Linux manual page for the real tea on Linux behavior ☕
• or, plot twist, the interface may not be implemented on Linux at all. yeah. it happens. don't panic.

🎀 NAME 🎀

vswprintf — wide-character formatted output of a stdarg argument list

it's giving "printf but wide chars and you already have a va_list" energy, and honestly? iconic. 👑

🌸 SYNOPSIS 🌸

here's the vibe, copy it exactly bestie:

#include <stdarg.h>
#include <stdio.h>
#include <wchar.h>

int vswprintf(wchar_t *restrict ws, size_t n,
    const wchar_t *restrict format, va_list arg);

look at those restrict qualifiers just restricting, we love to see it 💅

🦋 DESCRIPTION 🦋

bestie. this one's a shortcut page. the actual details? Refer to vfwprintf(). that's it, that's the whole description. go read that one, it's holding all the lore 📖✨

👑 COPYRIGHT 👑

okay legal moment, stay with me, this part matters:

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 .

ngl the "referee document" line is the legal way of saying "if this page and the official standard beef, the standard wins, no cap." 🥊

and that's a wrap, bestie!! this page came to you from IEEE/The Open Group, 2017 — yes, the footer said exactly that, and we're honoring it. mwah 💋 go forth and format those wide characters, you absolute main character 🫶💜