DIV(3POSIX)

💖 DIV(3POSIX) — the POSIX Programmer's Manual one 💖

okay bestie, welcome to div(3POSIX), straight out of the POSIX Programmer's Manual 🎀

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🌸 PROLOG 🌸

okay so first things first, a lil heads up before we dive in:

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.

lowkey important!! don't come for me if Linux does its own thing, that's literally what the prolog says 💀

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✨ NAME ✨

div — compute the quotient and remainder of an integer division

like, it does the division math and hands you back both pieces 🍓

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🦋 SYNOPSIS 🦋

#include <stdlib.h>

div_t div(int numer, int denom);

two ints go in, one div_t comes out, that's the whole vibe 💅

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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. This volume of POSIX.1‐2017 defers to the ISO C standard.

so the div() function shall compute the quotient and remainder of the division of the numerator numer by the denominator denom.

and here's the tea, bestie: if the division is inexact, the resulting quotient is the integer of lesser magnitude that is the nearest to the algebraic quotient. (it's giving "truncate toward zero," not "floor," iykyk)

⚠️ if the result cannot be represented, the behavior is undefined. no cap. otherwise, quot*denom+rem shall equal numer — that's the promise it's making you 🫶

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🌈 RETURN VALUE 🌈

The div() function shall return a structure of type div_t, comprising both the quotient and the remainder. The structure includes the following members, in any order:

int  quot;  /* quotient */
int  rem;   /* remainder */

two lil fields, both iconic, order not guaranteed so don't get attached to a layout 💖

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💀 ERRORS 💀

No errors are defined.

The following sections are informative.

literally zero errors, not even one, she's unbothered 😌

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🧚 EXAMPLES 🧚

None.

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🎀 APPLICATION USAGE 🎀

None.

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💜 RATIONALE 💜

None.

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🔥 FUTURE DIRECTIONS 🔥

None.

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🌟 SEE ALSO 🌟

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

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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. 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 page, bestie!! this one came to you courtesy of IEEE/The Open Group, 2017, and the manual name on the tin is DIV(3POSIX). go divide something responsibly 💅✨