66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
|
// This file is part of Eigen, a lightweight C++ template library
|
||
|
|
// for linear algebra.
|
||
|
|
//
|
||
|
|
// Copyright (C) 2009 Benoit Jacob <jacob.benoit.1@gmail.com>
|
||
|
|
//
|
||
|
|
// This Source Code Form is subject to the terms of the Mozilla
|
||
|
|
// Public License v. 2.0. If a copy of the MPL was not distributed
|
||
|
|
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
||
|
|
|
||
|
|
#include "binary_library.h"
|
||
|
|
#include "stdio.h"
|
||
|
|
|
||
|
|
void demo_MatrixXd()
|
||
|
|
{
|
||
|
|
struct C_MatrixXd *matrix1, *matrix2, *result;
|
||
|
|
printf("*** demo_MatrixXd ***\n");
|
||
|
|
|
||
|
|
matrix1 = MatrixXd_new(3, 3);
|
||
|
|
MatrixXd_set_zero(matrix1);
|
||
|
|
MatrixXd_set_coeff(matrix1, 0, 1, 2.5);
|
||
|
|
MatrixXd_set_coeff(matrix1, 1, 0, 1.4);
|
||
|
|
printf("Here is matrix1:\n");
|
||
|
|
MatrixXd_print(matrix1);
|
||
|
|
|
||
|
|
matrix2 = MatrixXd_new(3, 3);
|
||
|
|
MatrixXd_multiply(matrix1, matrix1, matrix2);
|
||
|
|
printf("Here is matrix1*matrix1:\n");
|
||
|
|
MatrixXd_print(matrix2);
|
||
|
|
|
||
|
|
MatrixXd_delete(matrix1);
|
||
|
|
MatrixXd_delete(matrix2);
|
||
|
|
}
|
||
|
|
|
||
|
|
// this helper function takes a plain C array and prints it in one line
|
||
|
|
void print_array(double *array, int n)
|
||
|
|
{
|
||
|
|
struct C_Map_MatrixXd *m = Map_MatrixXd_new(array, 1, n);
|
||
|
|
Map_MatrixXd_print(m);
|
||
|
|
Map_MatrixXd_delete(m);
|
||
|
|
}
|
||
|
|
|
||
|
|
void demo_Map_MatrixXd()
|
||
|
|
{
|
||
|
|
struct C_Map_MatrixXd *map;
|
||
|
|
double array[5];
|
||
|
|
int i;
|
||
|
|
printf("*** demo_Map_MatrixXd ***\n");
|
||
|
|
|
||
|
|
for(i = 0; i < 5; ++i) array[i] = i;
|
||
|
|
printf("Initially, the array is:\n");
|
||
|
|
print_array(array, 5);
|
||
|
|
|
||
|
|
map = Map_MatrixXd_new(array, 5, 1);
|
||
|
|
Map_MatrixXd_add(map, map, map);
|
||
|
|
Map_MatrixXd_delete(map);
|
||
|
|
|
||
|
|
printf("Now the array is:\n");
|
||
|
|
print_array(array, 5);
|
||
|
|
}
|
||
|
|
|
||
|
|
int main()
|
||
|
|
{
|
||
|
|
demo_MatrixXd();
|
||
|
|
demo_Map_MatrixXd();
|
||
|
|
}
|