pub fn bank_angle(cant: f64, rail_head_distance: f64) -> Result<f64, BankError>Expand description
The nominal bank angle psi = asin(D / b).
ยงErrors
BankError::RailHeadDistance for a non-positive or non-finite b,
BankError::NonFinite for a non-finite cant, and
BankError::CantExceedsRailHeadDistance when |D| > b.