CTAN(3POSIX)

📦 version 2017a, in debian bookworm, debian trixie, ubuntu jammy, ubuntu noble, ubuntu resolute, ubuntu stonking

🎀 CTAN — bestie edition (3POSIX) 🎀

okay so this page lives in the POSIX Programmer's Manual, and it's the complex tangent page. yes, the fancy one. 💅

✨ PROLOG ✨

so like, real talk before we even start: this manual page is part of the POSIX Programmer's Manual. the Linux implementation of this interface may differ — so if you're on Linux, go read the corresponding Linux manual page for the actual deets on Linux behavior, okay? or… the interface might not even be implemented on Linux at all. 😭 wild, I know.

💖 NAME 💖

ctan, ctanf, ctanl — the complex tangent functions. that's it, that's the trio. 🫶

✨ SYNOPSIS ✨

#include <complex.h>

double complex ctan(double complex z);
float complex ctanf(float complex z);
long double complex ctanl(long double complex z);

look at them. three little icons in a row. 👑

🌸 DESCRIPTION 🌸

first things first, bestie: the functionality on this reference page is aligned with the ISO C standard. if there's any conflict between what's written here and the ISO C standard, that conflict is unintentional — nobody's trying to start drama. this volume of POSIX.1‐2017 defers to the ISO C standard, periodt.

and then the actual job description:

these functions shall compute the complex tangent of z. that's the whole assignment. 🦋

💜 RETURN VALUE 💜

these functions shall return the complex tangent value. like, that's the vibe. that's what you get back. ⭐

🌈 ERRORS 🌈

No errors are defined.

and just so you know — the following sections are informative. i.e. they're the little gossip corner, not the rules. 🙈

🍓 EXAMPLES 🍓

None.

(not me giving you nothing. it's literally None. 💀)

🧚 APPLICATION USAGE 🧚

None.

💅 RATIONALE 💅

None.

🔥 FUTURE DIRECTIONS 🔥

None.

🫶 SEE ALSO 🫶

  • catan()
  • The Base Definitions volume of POSIX.1‐2017, <complex.h>

go read those, they ate. ✨

okay legal moment, but make it cute:

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 .

tl;dr — if this page and the original Standard disagree, the original Standard wins. no cap.

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 .

and that's the page, bestie!! 🎀 brought to you by IEEE/The Open Group, 2017, and this lil manual page is CTAN(3POSIX) — go compute some complex tangents, you main character 💖✨

📦 where this page comes from