RS.CLIPPY.CAST_NAN_TO_INT

Casting a known floating-point NaN into an integer

This checker is a Clippy lint created by The Rust Project Contributors. The documentation shown here is a copy of the original documentation for: cast_nan_to_int. Copyright ©2025 The Rust Team. All rights reserved.

What it does

Checks for a known NaN float being cast to an integer

Why is this bad?

NaNs are cast into zero, so one could simply use this and make the code more readable. The lint could also hint at a programmer error.

Example

let _ = (0.0_f32 / 0.0) as u64;

Use instead:

let _ = 0_u64;