comedi_chan_...e_is_bipolar(9)

📦 version 7.3.1, in nixpkgs unstable

✨ comedi_chan_range_is_bipolar — the cutest little polarity check 💅

okay so bestie, welcome to the Kernel API Manual page for comedi_chan_range_is_bipolar(9) — yes the header is truncated and it's giving "we ran out of room at the function name" energy, but it's literally the same function, iykyk. 🎀

🌸 NAME 🌸

comedi_chan_range_is_bipolar — test if the channel-specific range is bipolar 🦋

✨ SYNOPSIS ✨

bool comedi_chan_range_is_bipolar (struct comedi_subdevice *s , unsigned
int chan , unsigned int range );

Three args, one bool back. Slay. 💅

🫶 ARGUMENTS 🫶

  • s — the COMEDI subdevice. that's your main character right there 👑
  • chan — the channel number, bestie. which one are we looking at 🔍
  • range — the index of the range within a range table. not the range itself, the index. important fr fr ⭐

💖 DESCRIPTION 💖

So what does it do? It tests whether a range is bipolar by checking whether its minimum value is negative. that's the whole vibe check, no cap 🧚

⚠️ heads up: it assumes chan and range are valid. it does not check. it is trusting you completely and that's a lot of pressure ngl 😭 also it only works for subdevices with a channel-specific range table list. if you don't have one of those, this function is not for you, sorry bb 🙈

🔥 RETURN 🔥

  • true — the range is bipolar 🎀
  • false — the range is unipolar 🌈

that's it, that's the whole return. iconic. periodt. 💀

🌟 SEE ALSO 🌟

the kernel file ./include/linux/comedi/comedidev.h and honestly a whole friend group of functions and structs — here's the full squad, no one left out 🫶:

okay that's the whole page bestie, go forth and check your polarity 💜

this masterpiece lives in ./include/linux/comedi, dropped October 2026, and answers to comedi_chan_...e_is_bipolar(9) — mwah, love that for us 🍓✨

📦 where this page comes from