fmpz_mat: add fraction-free LU decomposition #261
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oscarbenjamin
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Add various matrix properties like
is_squarefollowing thegr_matconvention.Adds fraction-free LU decomposition (FFLU) to compute matrices, P, L, U and D such that
P*A = L*D^-1*U.All these methods could come from
gr_matbut it is useful to implement them now along with tests in preparation for later.