Mercurial > ldcheck / file revision

from testsuite import error

def determinant_test(model):
    yield from [
        error(subfile_reference, 'zero-determinant')
        for subfile_reference in model.subfile_references
        if abs(subfile_reference.matrix.determinant() - 0) < 1e-15
    ]

manifest = {
    'tests': {
        'determinant': determinant_test,
    },
    'messages': {
        'zero-determinant': 'matrix determinant is zero '
            '(row or column all zero)',
    },
}