FDOWN(3)

💅 FDOWN(3) 💅

okay so bestie, this page is from Schily´s LIBRARY FUNCTIONS, and it’s all about fdown(). Very “small but mighty” energy. 🫶

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🎀 NAME 🎀

fdown() — returns a logical unit number. That’s the name, that’s the vibe. 💖

✨ SYNOPSIS ✨

int fdown(f)
FILE *f;

💖 DESCRIPTION 💖

fdown() is given a standard I/O FILE *f, and it returns the file number. A file number here is usually a small number like 2 — and no, it’s not a unique number system-wide, it’s peculiar to the specified process. 👀

So what’s it for? fdown() can be used to implement additional functions that the standard I/O library didn’t provide for. Iconic little helper behavior, honestly. ✨

It also verifies that the file was opened via fileopen(). Slay. 💅

🌈 RETURNS 🌈

Returns the actual system file number. Periodt. 🔥

⚠️ NOTES ⚠️

Since this call is system dependent, it should be used carefully. That’s the warning, bestie — don’t just yeet it around. 😭

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stay hydrated and may your file numbers stay cute 🫶 — this page is by Joerg Schilling, dated 2022/09/09, and it lives under FDOWN(3) in Schily´s LIBRARY FUNCTIONS. 🎀