Math

2026-10-01

2 min read time

Applies to Linux and Windows

This page covers the math extended API, providing integer arithmetic utilities including ceiling division, rounding, and integer logarithm functions.

Header	Content	CCCL Availability	CUDA Toolkit Availability
ceil_div	Ceiling division	CCCL 2.7.0	CUDA 12.8
round_up	Round up to the next multiple	CCCL 2.9.0	CUDA 12.9
round_down	Round down to the previous multiple	CCCL 2.9.0	CUDA 12.9
ilog2	Integer logarithm to the base 2	CCCL 3.0.0	CUDA 13.0
ilog10	Integer logarithm to the base 10	CCCL 3.0.0	CUDA 13.0