ATANL(3POSIX)

💖 atanl — POSIX Programmer's Manual, bestie edition 💖

okay so real talk, this is a page from the POSIX Programmer's Manual. That's the official standards-vibes one, not the Linux one. Heads up though: the Linux implementation of this interface may differ, so if you're on Linux, go check the corresponding Linux manual page for the actual Linux behavior — or honestly, this thing might not even be implemented on Linux at all. 💀

✨ PROLOG ✨

No cap, this manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. That's just how it is, girlie. 🫶

🌸 NAME 🌸

atanl — the arc tangent function. that's it. that's the whole name section. iconic of her honestly.

🎀 SYNOPSIS 🎀

okay so to even use her you gotta pull her in like this:

#include <math.h>

long double atanl(long double x);

yes bestie, that's a long double going in and a long double coming out. very demure, very precise. 💅

🦋 DESCRIPTION 🦋

literally just refer to atan(). that's the whole thing. she's the long double sister of atan(), and the docs are like "you already know her, go read that page." iykyk. 💜

👑 COPYRIGHT 👑

okay so the legal tea, and you know we have to include it all, no skipping:

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 .

fr fr, if this page looks cursed, it's a conversion glitch, not the standard's fault. report it at the link above. 💖

and that's the whole page, bestie. short, sweet, long double flavored. this was brought to you by IEEE / The Open Group, dated 2017, filed under ATANL(3POSIX). go eat some pie. or rather, go read atan(). 🥧✨💅