//! In this module you will find composite of matrix operations that are used elsewhere
//! for improved efficiency.
use crate::linalg::basic::arrays::Array2;
use crate::numbers::basenum::Number;
/// High order matrix operations.
pub trait HighOrderOperations<T: Number>: Array2<T> {
/// Y = AB
/// ```
/// use smartcore::linalg::basic::matrix::*;
/// use smartcore::linalg::traits::high_order::HighOrderOperations;
/// use smartcore::linalg::basic::arrays::Array2;
///
/// let a = DenseMatrix::from_2d_array(&[&[1., 2.], &[3., 4.], &[5., 6.]]);
/// let b = DenseMatrix::from_2d_array(&[&[5., 6.], &[7., 8.], &[9., 10.]]);
/// let expected = DenseMatrix::from_2d_array(&[&[71., 80.], &[92., 104.]]);
///
/// assert_eq!(a.ab(true, &b, false), expected);
/// ```
fn ab(&self, a_transpose: bool, b: &Self, b_transpose: bool) -> Self {
match (a_transpose, b_transpose) {
(true, true) => b.matmul(self).transpose(),
(false, true) => self.matmul(&b.transpose()),
(true, false) => self.transpose().matmul(b),
(false, false) => self.matmul(b),
}
}
}
mod tests {
/* TODO: Add tests */
}