RS.CLIPPY.MANUAL_DIV_CEIL
Manually reimplementing `div_ceil`
This checker is a Clippy lint created by The Rust Project Contributors. The documentation shown here is a copy of the original documentation for: manual_div_ceil. Copyright ©2025 The Rust Team. All rights reserved.
What it does
Checks for an expression like (x + (y - 1)) / y which is a common manual reimplementation
of x.div_ceil(y).
Why is this bad?
It's simpler, clearer and more readable.
Example
let x: i32 = 7;
let y: i32 = 4;
let div = (x + (y - 1)) / y;
Use instead:
#![feature(int_roundings)]
let x: i32 = 7;
let y: i32 = 4;
let div = x.div_ceil(y);
Configuration
-
msrv: The minimum rust version that the project supports. Defaults to therust-versionfield inCargo.toml(default:
current version)