LU_status

enum LU_status : std::uint_fast32_t

strong

A bitmask enumeration type used to return properties of an LUP-transformation of a matrix.

Enumerator
rearranged	Matrix columns were rearranged during the transformation, i.e. the associated permutation matrix is not the identity matrix.
rearranged_odd	Matrix columns were rearranged during the transformation such that the sign of the permutation is negative.
singularity	The original matrix, and thus one of the transformation matrices, are singular.
failure	Indicates a failure of the transformation. Should never happen unless otherwise is explicitly stated.