com_croftsoft_core::math::math_lib

Function sigmoid

Source 
pub fn sigmoid(a: f64) -> f64
Expand description

The sigmoid or logistic function

ยงExamples

use com_croftsoft_core::math::math_lib::sigmoid;
assert_eq!(
  sigmoid(f64::NEG_INFINITY),
  0.0);
assert_eq!(
  sigmoid(-1.0),
  0.2689414213699951);
assert_eq!(
  sigmoid(0.0),
  0.5);
assert_eq!(
  sigmoid(1.0),
  0.7310585786300049);
assert_eq!(
  sigmoid(f64::INFINITY),
  1.0);