Expand description
Control error calculation primitives.
The crate provides a narrow set of helpers over scalar f64 control error
values.
§Examples
use use_control_error::{absolute_error, deadband, percent_error};
assert_eq!(absolute_error(10.0, 9.0), 1.0);
assert_eq!(deadband(0.05, 0.1).unwrap(), 0.0);
assert_eq!(percent_error(10.0, 8.0), Some(20.0));