Stan Math Library
4.9.0
Automatic Differentiation
|
void stan::math::check_cholesky_factor_corr | ( | const char * | function, |
const char * | name, | ||
const StdVec & | y | ||
) |
Throw an exception if the specified matrix is not a valid Cholesky factor of a correlation matrix.
A Cholesky factor is a lower triangular matrix whose diagonal elements are all positive and each row has unit Euclidean length. Note that Cholesky factors need not be square, but require at least as many rows M as columns N (i.e., M >= N
). Tolerance is specified by math::CONSTRAINT_TOLERANCE
. Tolerance is specified by math::CONSTRAINT_TOLERANCE
.
StdVec | A standard vector with inner type either inheriting from MatrixBase with neither rows or columns defined at compile time to be equal to 1 or a var_value with the var's inner type inheriting from Eigen::MatrixBase with neither rows or columns defined at compile time to be equal to 1 |
function | Function name (for error messages) |
name | Variable name (for error messages) |
y | Standard vector of matrics to test |
`std::domain_error` | if y[i] is not a valid Cholesky factor, if number of rows is less than the number of columns, if there are 0 columns, or if any element in matrix is NaN |
Definition at line 69 of file check_cholesky_factor_corr.hpp.