no-float-loop-counter

Disallow float loop counters accumulated by repeated addition

Repeated floating-point addition accumulates rounding error and may skip the intended loop bound.
Instead, you SHOULD count with an integer and derive each floating-point value from that counter.

- Category: correctness
- Level: warning
- Fix: none
- Scope: module

Reported

for (let value: float64 = 0.0; value < 1.0; value += 0.1) {
    // sample the interval
}
Accepted

for (let index: int32 = 0; index < 10; index++) {
    const value = (index as float64) / 10.0;
}
Prior art

- Clippy · whilefloat

language/linter/src/rules/correctness/nofloatloopcounter.rs:7