JRAND48(3P)

✨ JRAND48(3P) — the POSIX Programmer's Manual page, bestie edition ✨

okay so real quick, this one lives in the POSIX Programmer's Manual (that's the 3P section, iykyk), and it's genuinely one of the shortest glow-ups in the whole book. let's get into it 💅

🌸 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.

no cap, that first bit matters: what Linux actually does here might not match what POSIX says, so go check the Linux page too. and sometimes the thing just... isn't on Linux at all. rude but true. 😭

💖 NAME 💖

jrand48 — generate a uniformly distributed pseudo-random long signed integer

like. it makes a random number. a long signed one. uniformly distributed. that's the whole vibe. 🎲✨

🦋 SYNOPSIS 🦋

#include <stdlib.h>

long jrand48(unsigned short xsubi[3]);

so you pull in <stdlib.h>, you hand it an array of three unsigned shorts called xsubi, and it hands you back a long. that's it. that's the function. 🫶

🎀 DESCRIPTION 🎀

Refer to drand48().

bestie. that is the ENTIRE description. one line. the POSIX gods really said "go read the other page, this is a family thing" 💀

👑 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 .

fr fr: if this page and the actual standard disagree, the standard wins. this page is the cover, the standard is the album. 🎤

and that's a wrap, angel 💜 this whole thing came to you courtesy of IEEE/The Open Group, 2017 — iconic, historic, and out. 🌈✨🎀