is_lower_triangular()

template<typename EigMat , require_eigen_matrix_dynamic_t< EigMat > * = nullptr>

bool stan::math::is_lower_triangular ( const EigMat &  y )

inline

Return true is matrix is lower triangular.

A matrix x is not lower triangular if there is a non-zero entry x[m, n] with m < n. This function only inspect the upper and triangular portion of the matrix, not including the diagonal.

Template Parameters

EigMat

A type derived from EigenBase with dynamic rows and columns

Parameters

y	Matrix to test

Returns

true is matrix is lower triangular

Definition at line 21 of file is_lower_triangular.hpp.