GitHub-Proxy/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2025-10-10 15:16:31 +08:00
Code Issues Packages Projects Releases Wiki Activity

add reshape test for const and static-size matrix

Browse Source
This commit is contained in:
yoco 2014-01-18 23:27:53 +08:00
parent 150796337a
commit 24e1c0f2a1
1 changed files with 36 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
test/reshape.cpp
View File

@ -12,14 +12,8 @@
using Eigen::Map;
using Eigen::MatrixXi;
void dynamic_reshape_all_size(int row, int col) {
// create matrix(row, col) and filled with 0, 1, 2, ...
Eigen::MatrixXi m(row, col);
for(int r = 0; r < row; ++r)
for(int c = 0; c < col; ++c)
m(r, c) = col * c + r;
// for all possible shape
template <typename MatType>
void dynamic_reshape_all_size(MatType m, int row, int col) {
for(int new_r = 1; new_r <= row * col; ++new_r) {
// skip invalid shape
if(row * col % new_r != 0)
@ -34,25 +28,42 @@ void dynamic_reshape_all_size(int row, int col) {
// just test a 4x4 matrix, enumerate all combination manually,
// so I don't have to do template-meta-programming here.
void static_reshape_all_size() {
// create matrix(row, col) and filled with 0, 1, 2, ...
int row = 4;
int col = 4;
Eigen::MatrixXi m(row, col);
for(int r = 0; r < row; ++r)
for(int c = 0; c < col; ++c)
m(r, c) = col * c + r;
// reshape and compare
VERIFY_IS_EQUAL((m.reshape< 1, 16>()), Map<MatrixXi>(m.data(), 1, 16));
VERIFY_IS_EQUAL((m.reshape< 2, 8>()), Map<MatrixXi>(m.data(), 2, 8));
VERIFY_IS_EQUAL((m.reshape< 4, 4>()), Map<MatrixXi>(m.data(), 4, 4));
VERIFY_IS_EQUAL((m.reshape< 8, 2>()), Map<MatrixXi>(m.data(), 8, 2));
VERIFY_IS_EQUAL((m.reshape<16, 1>()), Map<MatrixXi>(m.data(), 16, 1));
template <typename MatType>
void static_reshape_all_size(MatType m) {
VERIFY_IS_EQUAL((m.template reshape< 1, 16>()), Map<MatrixXi>(m.data(), 1, 16));
VERIFY_IS_EQUAL((m.template reshape< 2, 8>()), Map<MatrixXi>(m.data(), 2, 8));
VERIFY_IS_EQUAL((m.template reshape< 4, 4>()), Map<MatrixXi>(m.data(), 4, 4));
VERIFY_IS_EQUAL((m.template reshape< 8, 2>()), Map<MatrixXi>(m.data(), 8, 2));
VERIFY_IS_EQUAL((m.template reshape<16, 1>()), Map<MatrixXi>(m.data(), 16, 1));
}
void test_reshape()
{
CALL_SUBTEST(dynamic_reshape_all_size(4, 4));
CALL_SUBTEST(static_reshape_all_size());
// create matrix(row, col) and filled with 0, 1, 2, ...
// for all possible shape
int row = 4;
int col = 4;
Eigen::MatrixXi mx(row, col);
Eigen::Matrix4i m4(row, col);
for(int r = 0; r < row; ++r) {
for(int c = 0; c < col; ++c) {
mx(r, c) = col * c + r;
m4(r, c) = col * c + r;
}
}
// test dynamic-size matrix
CALL_SUBTEST(dynamic_reshape_all_size(mx, 4, 4));
CALL_SUBTEST(static_reshape_all_size(mx));
// test static-size matrix
CALL_SUBTEST(dynamic_reshape_all_size(m4, 4, 4));
CALL_SUBTEST(static_reshape_all_size(m4));
// test dynamic-size const matrix
CALL_SUBTEST(dynamic_reshape_all_size(static_cast<const Eigen::MatrixXi>(mx), 4, 4));
CALL_SUBTEST(static_reshape_all_size(static_cast<const Eigen::MatrixXi>(mx)));
// test static-size const matrix
CALL_SUBTEST(dynamic_reshape_all_size(static_cast<const Eigen::Matrix4i>(m4), 4, 4));
CALL_SUBTEST(static_reshape_all_size(static_cast<const Eigen::Matrix4i>(m4)));
}