CSIN(3POSIX)

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

💖 CSIN(3POSIX) — the complex sine functions, bestie 💖

okay so this is a page from the POSIX Programmer's Manual, and it's literally all about csin, csinf, and csinl. yes, the manual name is right there in the title, we're being efficient today 💅

🌸 PROLOG 🌸

okay bestie, real talk before we get into it: 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), or — and I'm sorry to say this — the interface may not even be implemented on Linux at all. 😭 not me delivering bad news in the prolog.

✨ NAME ✨

csin, csinf, csinl — the complex sine functions. iconic trio, no cap.

🎀 SYNOPSIS 🎀

#include <complex.h>

double complex csin(double complex z);
float complex csinf(float complex z);
long double complex csinl(long double complex z);

three flavors, one vibe. pick your precision, slay. 👑

🦋 DESCRIPTION 🦋

so 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 — fr fr, it's an accident, nobody's fighting. and this volume of POSIX.1‐2017 defers to the ISO C standard, so the ISO C standard is the main character here.

anyway, the actual tea: these functions shall compute the complex sine of z. that's it. that's the whole job. ✨

🌈 RETURN VALUE 🌈

these functions shall return the complex sine value. it's giving "what it says on the tin," honestly. 💅

💀 ERRORS 💀

No errors are defined. we love a low-drama function, periodt. 🫶

the following sections are informative — so they're the bonus content, not the required reading. 📖

🌟 EXAMPLES 🌟

None. 😭

💜 APPLICATION USAGE 💜

None. 🙈

🧚 RATIONALE 🧚

None. honestly? a mystery wrapped in an enigma. we move. 💫

⭐ FUTURE DIRECTIONS ⭐

None. the future is unknowable but the vibe is immaculate. 🌸

🔥 SEE ALSO 🔥

  • casin() — the inverse, the arc, the counterpart, iykyk 💫
  • The Base Definitions volume of POSIX.1‐2017, <complex.h> — go read it, bestie, it's literally where all the types live 🎀

okay this part is important so I'm keeping it exactly as it is, bestie:

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 .

and that's the whole page, bestie!! go compute some complex sines, you absolute legend. 💖✨🎀🦋🌸💅🫶

signed off with love by IEEE/The Open Group, 2017, on the page CSIN(3POSIX) — bye babes, see u in the next man page 🌈💜

📦 where this page comes from