inline bool check_multiplicable(const char* function,
const char* name1,
const T1& y1,
const char* name2,
const T2& y2) {
check_positive_size(function, name1, "rows()", y1.rows());
check_positive_size(function, name2, "cols()", y2.cols());
check_size_match(function,
"Columns of ", name1, y1.cols(),
"Rows of ", name2, y2.rows());
check_positive_size(function, name1, "cols()", y1.cols());
return true;
}
inline void check_pos_definite(const char* function, const char* name,
const Eigen::Matrix<T_y, -1, -1>& y) {
check_symmetric(function, name, y);
check_positive_size(function, name, "rows", y.rows());
if (y.rows() == 1 && !(y(0, 0) > CONSTRAINT_TOLERANCE))
domain_error(function, name, "is not positive definite.", "");
Eigen::LDLT<Eigen::MatrixXd> cholesky = value_of_rec(y).ldlt();
if (cholesky.info() != Eigen::Success
|| !cholesky.isPositive()
|| (cholesky.vectorD().array() <= 0.0).any())
domain_error(function, name, "is not positive definite.", "");
check_not_nan(function, name, y);
}