CTAN(3P)

🦋 CTAN(3P) — bestie edition 🦋

ok so before we even get into it, this page is part of the POSIX Programmer's Manual, and I need you to know that going in. 💅

---

✨ PROLOG ✨

So this manual page is part of the POSIX Programmer's Manual, okay? But here's the tea: the Linux implementation of this interface might be different (so like, go check the corresponding Linux manual page for the deets on Linux behavior, fr), or the interface might not even be implemented on Linux at all. 😭 Just a heads up.

---

🌸 NAME 🌸

ctan, ctanf, ctanl — complex tangent functions. yes bestie, tangent but make it complex 💖

---

🎀 SYNOPSIS 🎀

#include <complex.h>

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

---

💖 DESCRIPTION 💖

The functionality described on this reference page is aligned with the ISO C standard. And like, if there's any conflict between the requirements described here and the ISO C standard, that conflict is unintentional — nobody meant it, it's not that deep. This volume of POSIX.1‐2017 defers to the ISO C standard, periodt.

These functions shall compute the complex tangent of z. that's it, that's the whole job 🫶

---

🔥 RETURN VALUE 🔥

These functions shall return the complex tangent value. slay. ✨

---

💀 ERRORS 💀

No errors are defined. not a single one. iconic behavior honestly.

The following sections are informative.

---

🌈 EXAMPLES 🌈

None. (not me leaving this blank 💀)

---

🧚 APPLICATION USAGE 🧚

None.

---

👑 RATIONALE 👑

None.

---

⭐ FUTURE DIRECTIONS ⭐

None.

---

🍓 SEE ALSO 🍓

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

---

💜 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 .

---

ok that's the whole page bestie, we ate and left no crumbs 💅✨ and just so you know where this came from: this is IEEE/The Open Group, dated 2017, and the page itself is CTAN(3P). bye ily 🦋💖