log2_rrule

chainrules

Function log2_rrule 

Source 
pub fn log2_rrule<S: ScalarAd>(x: S, cotangent: S) -> S
Expand description

Reverse rule for log2.

ยงExamples

use chainrules::log2_rrule;

let dy = log2_rrule(8.0_f64, 2.0);
assert!((dy - (2.0_f64 / (8.0_f64 * std::f64::consts::LN_2))).abs() < 1e-12);