LDIV(3P)

💅 LDIV(3P) — the POSIX Programmer's Manual glow-up

okay bestie, so this is LDIV(3P) from the POSIX Programmer's Manual (that's the IEEE/The Open Group one, dated 2017, we'll get to that at the end 🎀). Buckle up, it's a short one but it's iconic.

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🌸 PROLOG

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.

fr fr, read that twice. Linux might do its own thing, or might not have this at all. not me being honest about it 💀

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✨ NAME

ldiv, lldiv — compute quotient and remainder of a long division

like, you divide two numbers and you get both the answer and the leftover. main character math. 👑

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🫶 SYNOPSIS

#include <stdlib.h>

ldiv_t ldiv(long numer, long denom);
lldiv_t lldiv(long long numer, long long denom);

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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.

These functions shall compute the quotient and remainder of the division of the numerator numer by the denominator denom. If the division is inexact, the resulting quotient is the long integer (for the ldiv() function) or long long integer (for the lldiv() function) of lesser magnitude that is the nearest to the algebraic quotient. If the result cannot be represented, the behavior is undefined; otherwise, quot * denom+rem shall equal numer.

🚨 "the behavior is undefined" bestie. that's not a vibe, that's a warning. if it can't be represented, all bets are OFF. no cap.

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👑 RETURN VALUE

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

long   quot;    /* Quotient */
long   rem;     /* Remainder */

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

long long   quot;    /* Quotient */
long long   rem;     /* Remainder */

so you get a lil package deal 🎁 — quotient AND remainder, together, in one struct. obsessed.

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🙈 ERRORS

No errors are defined.

The following sections are informative.

literally nothing. zero drama. we love a low-maintenance function. 💜

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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

• div()
• 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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okay that's the whole page bestie, you ate it 💅✨ and for the cute sign-off: this lil masterpiece is brought to you by IEEE/The Open Group, dated 2017, page LDIV(3P). periodt. 🎀💖