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use std;
use ndarray::{Array1, Array2};
pub struct ArgminOperator<'a> {
pub operator: &'a Array2<f64>,
pub y: &'a Array1<f64>,
pub target_cost: f64,
}
impl<'a> ArgminOperator<'a> {
pub fn new(operator: &'a Array2<f64>, y: &'a Array1<f64>) -> Self {
ArgminOperator {
operator: operator,
y: y,
target_cost: std::f64::MIN,
}
}
pub fn target_cost(&mut self, target_cost: f64) -> &mut Self {
self.target_cost = target_cost;
self
}
pub fn apply(&self, x: &Array1<f64>) -> Array1<f64> {
self.operator.dot(x)
}
pub fn apply_transpose(&self, x: &Array1<f64>) -> Array1<f64> {
self.operator.t().dot(x)
}
}