UNW_IS_FPREG(3libunwind)

📦 version 1.8.3, in debian trixie, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 unw_is_fpreg — the libunwind glow-up check for floaty registers 💖

okay bestie, so you're deep in libunwind(3libunwind) land (that's the programming library, section 3, iykyk) and you need to know: is this register a floating-point register or not? That's literally it. That's the whole assignment. And unw_is_fpreg() eats that question for breakfast. 🍓

✨ SYNOPSIS ✨

#include <libunwind.h>

int unw_is_fpreg(unw_regnum_t reg);

like, one include, one function, zero drama. we love a low-maintenance icon. 👑

🌸 DESCRIPTION 🌸

The unw_is_fpreg() routine checks whether register number reg is a floating-point register. That's the vibe check. Floaty or not floaty. 💅

🎀 heads up bestie: this routine is normally implemented as a macro, so applications should not attempt to take its address. Not its address, not its hand in marriage, none of that. just don't. 🙈

⭐ RETURN VALUE ⭐

  • If reg is a floating-point register → unw_is_fpreg() returns a non-zero value. slay. 🔥
  • Otherwise → it returns a value of 0. not a floaty reg, not today. 💀

🦋 THREAD AND SIGNAL SAFETY 🦋

unw_is_fpreg() is thread safe as well as safe to use from a signal handler. so go off, call it from literally anywhere, it's giving main character energy and it will not fold. 🌈

🌟 SEE ALSO 🌟

the whole friend group fr fr 🫶

💜 AUTHOR 💜

David Mosberger-Tang Email: dmosberger@gmail.com WWW: http://www.nongnu.org/libunwind/

and that's the tea, bestie 🧚 this lil page came straight out of the Programming Library era, dated 29 August 2023 — so go check your registers, stay floaty, and don't take the macro's address. mwah. 💅✨🎀

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