get_base1_lhs() [9/12]

template<typename T >

Eigen::Block< Eigen::Matrix< T, Eigen::Dynamic, Eigen::Dynamic > > stan::math::get_base1_lhs ( Eigen::Matrix< T, Eigen::Dynamic, Eigen::Dynamic > &  x, size_t  m, const char *  error_msg, size_t  idx  )

inline

Return a copy of the row of the specified vector at the specified base-one row index.

If the index is out of range, throw a std::out_of_range exception with the specified error message and index indicated.

Warning: Because a copy is involved, it is inefficient to access element of matrices by first using this method to get a row then using a second call to get the value at a specified column.

Template Parameters

T	type of value

Parameters

x	Matrix from which to get a row
m	Index into matrix plus 1.
error_msg	Error message if the index is out of range.
idx	Nested index level to report in error message if the index is out of range.

Returns

Row of matrix at i - 1.

Exceptions

std::out_of_range

if idx is out of range.

Definition at line 251 of file get_base1_lhs.hpp.