use crate::{number::Number, Matrix};
use rayon::prelude::*;
impl<T> Matrix<T>
where
T: Number,
{
pub fn linear_prod(&self, rhs: &Matrix<T>) -> T {
if !self.is_same_size(rhs) {
panic!("Dimension mismatch.")
}
self.elems
.par_iter()
.zip(rhs.elems.par_iter())
.map(|(&s, &r)| s * r)
.sum()
}
pub fn hadamard_prod(self, rhs: &Matrix<T>) -> Matrix<T> {
if !self.is_same_size(rhs) {
panic!("Dimension mismatch.")
}
let mut slf = self;
slf.elems
.par_iter_mut()
.zip(rhs.elems.par_iter())
.map(|(s, &r)| {
*s *= r;
})
.collect::<Vec<_>>();
slf
}
}
#[cfg(test)]
mod tests {
use crate::*;
#[test]
fn it_works() {
let a = DiagonalMatrix::<f64>::identity(2).mat();
let b = DiagonalMatrix::<f64>::identity(2).mat();
let c = a.hadamard_prod(&b);
assert_eq!(b[0][0], c[0][0])
}
}