**test_matrix_test**,
a C++ code which
call test_matrix() to
defines test matrices for which some of the determinant, eigenvalues,
inverse, null vectors, P*L*U factorization or linear system solution
are already known, including the Vandermonde and Wathen matrix.

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test_matrix, a C++ code which defines test matrices for which some of the determinant, eigenvalues, inverse, null vectors, P*L*U factorization or linear system solution are already known, including the vandermonde and Wathen matrix.

- test_matrix_test.cpp, calls all the tests.
- test_matrix_test.sh, runs all the tests.
- test_matrix_test.txt, the output file.