__rounddown_pow_of_two(9)

✨ __rounddown_pow_of_two(9) ✨

okay bestie, welcome to the Kernel API Manual 💖 today’s main character is __rounddown_pow_of_two(9), and yes, it’s giving “tiny but useful” energy.

🎀 NAME 🎀

__rounddown_pow_of_two — round down to nearest power of two ✨

🦋 SYNOPSIS 🦋

unsigned long __rounddown_pow_of_two (unsigned long n );

💅 ARGUMENTS 💅

• n — value to round down 🫶

🌸 SEE ALSO 🌸

the whole squad is right here, no cap:

• Kernel file ./include/linux/log2.h
• is_power_of_2(9)
• __roundup_pow_of_two(9)
• const_ilog2(9)
• ilog2(9)
• roundup_pow_of_two(9)
• rounddown_pow_of_two(9)
• order_base_2(9)
• bits_per(9)
• max_pow_of_two_factor(9)

mwah 💋 this page comes from ./include/linux, dated October 2026, and it’s absolutely serving __rounddown_pow_of_two(9) energy — periodt. 🫶🔥