manual-div-ceil

Prefer divideCeil over an adjusted integer numerator

Adding one less than the divisor before integer division manually computes a ceiling quotient and may overflow the intermediate sum.
Instead, you SHOULD call .divideCeil() on the dividend.

- Category: style
- Level: warning
- Fix: automatic
- Scope: module

Reported

function chunks(length: uint32, width: uint32): uint32 {
    return (length + width - 1) / width;
}
Accepted

function chunks(length: uint32, width: uint32): uint32 {
    return length.divideCeil(width);
}
Prior art

- Clippy · manualdivceil

language/linter/src/rules/style/manualdivceil.rs:8