CSQRT(3P)

💜 CSQRT(3P) — the POSIX Programmer's Manual, bestie edition 💜

okay so real talk — this page lives in the POSIX Programmer's Manual, and I need you to know that before we go any further 👑

🌸 PROLOG 🌸

So here's the tea: this manual page is part of the POSIX Programmer's Manual. But — and this is important — the Linux implementation of this interface may differ, so if you're on Linux you should go consult the corresponding Linux manual page for the deets on Linux behavior. Or, plot twist, the interface might not even be implemented on Linux at all. Vibe check your platform first, fr fr. 😭

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✨ NAME ✨

csqrt, csqrtf, csqrtl — complex square root functions 🦋

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🎀 SYNOPSIS 🎀

#include <complex.h>

double complex csqrt(double complex z);
float complex csqrtf(float complex z);
long double complex csqrtl(long double complex z);

three flavors, one vibe. pick your precision, babe 💅

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🌈 DESCRIPTION 🌈

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 — nobody's starting drama on purpose. This volume of POSIX.1‐2017 defers to the ISO C standard. periodt.

These functions shall compute the complex square root of z, with a branch cut along the negative real axis. yes that's a real thing, yes it matters, iykyk 🧚

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💖 RETURN VALUE 💖

These functions shall return the complex square root value, in the range of the right half-plane (including the imaginary axis). so like… the right side of the complex plane. main character energy only 🫶

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💀 ERRORS 💀

No errors are defined. literally zero. iconic behavior, no notes 👑

The following sections are informative — meaning they're the bonus content, not the requirements. 🍓

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🦋 EXAMPLES 🦋

None. 😭 yeah i know, i wanted a cute example too but there isn't one.

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🌸 APPLICATION USAGE 🌸

None. nothing here either, bestie. empty. beautiful. minimal. ✨

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⭐ RATIONALE ⭐

None. nope. nada. 🎀

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🧚 FUTURE DIRECTIONS 🧚

None. this one's staying exactly how it is. 💜

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🔥 SEE ALSO 🔥

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

go read those too, they're the friend group 🌈

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👑 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. So like… if these two ever beef, the original wins. no cap. 🥊

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 .

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and that's the whole thing, babe — brought to you by IEEE/The Open Group, 2017, signing off from the CSQRT(3P) page 💖✨🎀 mwah, go compute some square roots 🦋