MULDIV(3)

💅 MULDIV(3) — muldiv, umuldiv: high-precision multiplication and division 💅

okay bestie, welcome to the Library Functions Manual page for MULDIV(3) 💖 this one’s a tiny little API with big “math but make it safe” energy, and we’re obsessed.

✨ NAME ✨

muldiv, umuldiv — high-precision multiplication and division 🎀

🦋 SYNOPSIS 🦋

#include <u.h>
#include <libc.h>

long  muldiv(long a, long b, long c)

ulong umuldiv(ulong a, ulong b, ulong c)

🌸 DESCRIPTION 🌸

so muldiv returns a*b/c, and it uses a vlong to hold the intermediate result — yes, it’s giving “we do the messy part somewhere roomier” 💅✨

umuldiv is the exact same idea but for unsigned integers. these two are here so you can scale integer values without worrying about overflowing the intermediate result. iconic behavior, honestly 🫶

⚠️ real talk, bestie: on some architectures, these routines can generate a trap if the final result does not fit in a long or ulong; on others they will silently truncate. so like… know ur architecture, okay? 😭💀

that’s the whole MULDIV(3) page — the footer just signs it MULDIV(3), so here’s ur cute little sign-off: stay precise, stay unsigned when u need to, and catch u in the next manpage 🌈💖✨