1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54

// Copyright 2022 Stefan Zobel
//
// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
// http://opensource.org/licenses/MIT>, at your option. This file may not be
// copied, modified, or distributed except according to those terms.

//! SMatrix * SMatrix -> HMatrix

use crate::matrix::*;
use crate::matrix_mul::multiply;

impl<T: Numeric<T>, const ROWS_LEFT: usize, const COLS_LEFT: usize>
    SMatrix<T, ROWS_LEFT, COLS_LEFT>
{
    /// Multiply two stack matrices and allocate the result on the heap.
    #[inline]
    pub fn mul_val_to_heap<const COLS_RIGHT: usize>(
        &self,
        rhs: SMatrix<T, COLS_LEFT, COLS_RIGHT>,
    ) -> HMatrix<T, ROWS_LEFT, COLS_RIGHT> {
        let mut c = MF::<T, ROWS_LEFT, COLS_RIGHT>::new_heap();
        multiply(self.array(), rhs.array(), c.array_mut());
        c
    }

    /// Multiply two stack matrices and allocate the result on the heap.
    #[inline]
    pub fn mul_ref_to_heap<const COLS_RIGHT: usize>(
        &self,
        rhs: &SMatrix<T, COLS_LEFT, COLS_RIGHT>,
    ) -> HMatrix<T, ROWS_LEFT, COLS_RIGHT> {
        let mut c = MF::<T, ROWS_LEFT, COLS_RIGHT>::new_heap();
        multiply(self.array(), rhs.array(), c.array_mut());
        c
    }
}

#[cfg(test)]
mod mul_to_heap_tests {
    use super::*;

    #[test]
    fn test_mul_to_heap() {
        let a = MF::<f64, 100, 1>::new_stack();
        let by_value = MF::<f64, 1, 100>::new_stack();
        let by_ref = &MF::<f64, 1, 100>::new_stack();
        let by_mut_ref = &mut MF::<f64, 1, 100>::new_stack();

        let _c = a.mul_val_to_heap(by_value);
        let _d = a.mul_ref_to_heap(by_ref);
        let _e = a.mul_ref_to_heap(by_mut_ref);
    }
}