ndarray_linalg/
inner.rs

1use crate::types::*;
2use ndarray::*;
3
4/// Inner Product
5///
6/// Differenct from `Dot` trait, this take complex conjugate of `self` elements
7///
8pub trait InnerProduct {
9    type Elem: Scalar;
10
11    /// Inner product `(self.conjugate, rhs)
12    fn inner<S>(&self, rhs: &ArrayBase<S, Ix1>) -> Self::Elem
13    where
14        S: Data<Elem = Self::Elem>;
15}
16
17impl<A, S> InnerProduct for ArrayBase<S, Ix1>
18where
19    A: Scalar,
20    S: Data<Elem = A>,
21{
22    type Elem = A;
23    fn inner<St: Data<Elem = A>>(&self, rhs: &ArrayBase<St, Ix1>) -> A {
24        assert_eq!(self.len(), rhs.len());
25        Zip::from(self)
26            .and(rhs)
27            .fold_while(A::zero(), |acc, s, r| {
28                FoldWhile::Continue(acc + s.conj() * *r)
29            })
30            .into_inner()
31    }
32}
ndarray_linalg/inner.rs

ndarray_linalg/
inner.rs
