FESETEXCEPTFLAG(3P)

πŸ’– fesetexceptflag β€” setting those floating-point status flags, bestie πŸ’–

okay so real talk, this one is from the POSIX Programmer's Manual (that's the manual name, we're not gatekeeping it) and it's giving very "short but mighty." grab a snack, it's a quick read πŸ“


✨ PROLOG ✨

so before we even get into it, hear me out:

this manual page is part of the POSIX Programmer's Manual. that means a couple things, and I need you to internalise them:

  • the Linux implementation of this interface may differ β€” so like, go consult the corresponding Linux manual page for the deets on Linux behaviour, okay? don't come for me.
  • or, plot twist, the interface may not be implemented on Linux at all. yeah. it happens. not every glow-up ships everywhere πŸ’€

πŸŽ€ NAME πŸŽ€

fesetexceptflag β€” set floating-point status flags

that's it. that's the whole name section. short king energy πŸ‘‘


πŸ¦‹ SYNOPSIS πŸ¦‹

#include <fenv.h>

int fesetexceptflag(const fexcept_t *flagp, int excepts);

look at her. two arguments, one int return, living her best life ✨


🌸 DESCRIPTION 🌸

okay so the description is literally just this:

Refer to fegetexceptflag().

and honestly? iconic. the POSIX girlies said "we already wrote it over there, go read that one, it's the same vibe." so if you want the full tea on what this actually does, bestie, you're gonna want to pull up the fegetexceptflag() page. iykyk 🫢


ngl we have to do the boring part, but I'm gonna keep every single word because that's the rules:

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, that referee document line is important β€” if this page and the original standard ever disagree, the original standard wins. no cap. πŸ™ˆ

and that's the whole page, babe πŸ’… thank you for coming to my TED talk, brought to you by IEEE/The Open Group, circa 2017, signing off πŸŽ€βœ¨πŸ¦‹

πŸ“¦ where this page comes from