Changes in v1.6 -- leto
Sat Feb 16 09:46:51 EST 2002
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* is_skew_symmetric() function added
* fixed logic error is sym_eigenvalues ( didn't notice if not square! )
* spectral_radius() function added
* is_binary() function added
* is_LR() function added
* t/spectral.t created
* t/binary.t created
* t/is_LR.t created
* t/gramian.t created
* is_skew_symmetric() tests added to t/symmetric.t
* is_gramian() function added
Changes in v1.5 -- leto
Sat Jan 12 04:20:48 EST 2002
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* t/inverse.t test 6 was numerically instable, commented out
I ran it 10000 times and got values from 1e-2 to 1e-16,
this caused the test to randomly fail, because it checked
that the value was less than 1e-10
I did not notice this problem because my default perl install
has USE_LONG_DOUBLE
* changed epsilon to be 1e-8 in funcs.pl ( was 1e-10)
Changes in v1.4 -- leto
Jan 10 2002
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* Steffen Beyer gave maintainer-ship to Jonathan Leto
* exponent() function added
* trace() function added
* "**" and "**=" overloaded to exponent()
* $matrix ** -1 is now a quick way to compute the inverse, if it exists
* new_from_rows and new_from_cols integrated from Math::MatrixReal::Ext1
* is_diagonal() function added
* is_tridiagonal() function added
* each() function added
* each_diag() function added
* put functions used by all the test scripts into funcs.pl instead
of all of them having copy+paste code
* t/inverse.t created
* t/diag.t created
* t/exponent.t created
* t/trace.t created
* t/ext1.t created
* some documentation spelling errors corrected
* perl operators exp(),sin(),cos() overloaded
only works with diagonal matrices for now
* new_diag() function added
* is_upper_triangular() function added
* is_lower_triangular() function added
* t/triang.t created
* t/det.t created
* inverse() function added
* det() function added
should be much faster for diagonal and triangular matrices
* tri_diagonalize() tri_eigenvalues() and now do real tridiag check, as per TODO
* t/minor.t created
* t/cofactor.t created
* t/adjoint.t created
* t/quadratic.t created
* norm_sum() function added
* t/norm.t created
* check if $rows and $cols are integers in new()
* t/condition.t created
* t/product.t created
* eigenvalues() function added
* t/eigen_NxN.t - added test for eigenvalues()
* swap_row() function added
* swap_col() function added
* t/swap.t created
* t/orthogonal.t created
* is_orthogonal() function added