matrix_exp_2x2()

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

Eigen::Matrix< value_type_t< EigMat >, Eigen::Dynamic, Eigen::Dynamic > stan::math::matrix_exp_2x2

(

const EigMat &

A

)

Return the matrix exponential of a 2x2 matrix.

Reference for algorithm: http://mathworld.wolfram.com/MatrixExponential.html Note: algorithm only works if delta > 0;

Template Parameters

EigMat

type of the matrix

Parameters

[in]

A

2x2 matrix to exponentiate.

Returns

Matrix exponential of A.

Definition at line 26 of file matrix_exp_2x2.hpp.