cosd_rrule

chainrules

Function cosd_rrule 

Source 
pub fn cosd_rrule<S: ScalarAd>(x: S, cotangent: S) -> S
Expand description

Reverse rule for cosd.

ยงExamples

use chainrules::cosd_rrule;

let dy = cosd_rrule(60.0_f64, 1.0);
assert!((dy + std::f64::consts::PI / 180.0 * (60.0_f64.to_radians()).sin()).abs() < 1e-12);