Function basic_trace 

pub fn basic_trace<F>(a: &ArrayView2<'_, F>) -> LinalgResult<F>
where
    F: Float + NumAssign + Sum + Send + Sync + ScalarOperand + 'static,

Compute the trace of a square matrix.

The trace is the sum of the diagonal elements.

Arguments

• a - A square matrix

Returns

• Trace of the matrix

Examples

use scirs2_core::ndarray::array;
use scirs2_linalg::basic_trace;

let a = array![[1.0_f64, 2.0], [3.0, 4.0]];
let tr = basic_trace(&a.view()).unwrap();
assert!((tr - 5.0).abs() < 1e-10);