Use err_square_matrix_required more widely. * errwarn.h (err_square_matrix_required): Change prototype to take a second argument which is the name of the variable that is not square. * errwarn.cc (err_square_matrix_required): Take second argument NAME and print "NAME must be a square matrix". * balance.cc (Fbalance): Update calling form of err_square_matrix_required. * det.cc (Fdet): Update calling form of err_square_matrix_required. Update pattern in BIST tests to match new output. * eig.cc (Feig): Update calling form of err_square_matrix_required. Update pattern in BIST tests to match new output. * hess.cc (Fhess): Update calling form of err_square_matrix_required. Update pattern in BIST tests to match new output. * inv.cc (Finv): Update calling form of err_square_matrix_required. Update pattern in BIST tests to match new output. * qz.cc (Fqz): Update calling form of err_square_matrix_required. * schur.cc (Fschur): Update calling form of err_square_matrix_required. Update pattern in BIST tests to match new output. * sqrtm.cc (Fsqrtm): Update calling form of err_square_matrix_required. * sylvester.cc (Fsylvester): Update calling form of err_square_matrix_required. Update pattern in BIST tests to match new output. * amd.cc (Famd): Switch from error to err_square_matrix_required. Update pattern in BIST tests to match new output. * ccolamd.cc (Fcsymamd): Switch from error to err_square_matrix_required. * chol.cc (Fcholdelete, Fcholshift): Switch from error to err_square_matrix_required. * colamd.cc (Fsymamd): Switch from error to err_square_matrix_required. * symbfact.cc (Fsymfact): Switch from error to err_square_matrix_required. * symrcm.cc (Fsymrcm): Update calling form of err_square_matrix_required.

To cite GNU Octave in publications use:

  John W. Eaton, David Bateman, Søren Hauberg, Rik Wehbring (2015).
  GNU Octave version 4.0.0 manual: a high-level interactive language for
  numerical computations.
  URL http://www.gnu.org/software/octave/doc/interpreter/

A BibTeX entry for LaTeX users is:

  @book{,
    author    = {John W. Eaton, David Bateman, S\oren Hauberg, and Rik Wehbring},
    title     = {{GNU Octave} version 4.0.0 manual: a high-level interactive language for numerical computations},
    year      = {2015},
    url       = {http://www.gnu.org/software/octave/doc/interpreter},
  }

We have invested a lot of time and effort in creating GNU Octave, please cite it
when using it.  See also `citation pkgname' for citing Octave packages.