enhancedmath/lib/Matrix/matrix_product.js

This package contains some enhanced mathematical operations

import { getDimensions } from '../Helpers/index';
/**
 * Calculates the matrix product of 2 matrices
 * @param A Matrix a
 * @param B Matrix b
 */
const matrix_product = (A, B) => {
    const dimsA = getDimensions(A);
    const dimsB = getDimensions(B);
    if (dimsA.cols !== dimsB.rows) {
        return undefined;
    }
    const result = new Array(dimsA.rows);
    for (let i = 0; i < dimsA.rows; i++) {
        result[i] = new Array(dimsB.cols);
        for (let j = 0; j < dimsB.cols; j++) {
            result[i][j] = 0;
            for (let k = 0; k < dimsA.cols; k++) {
                result[i][j] += A[i][k] * B[k][j];
            }
        }
    }
    return result;
};
export default matrix_product;