check_sum_to_zero()

template<typename T , require_matrix_t< T > * = nullptr>

void stan::math::check_sum_to_zero	(	const char *	function,
		const char *	name,
		const T &	theta
	)

Throw an exception if the specified vector does not sum to 0.

Throw an exception if any vector in a standard vector does not sum to 0.

This function tests that the sum is within the tolerance specified by CONSTRAINT_TOLERANCE. This function only accepts Eigen vectors, statically typed vectors, not general matrices with 1 column.

Template Parameters

T	A type inheriting from Eigen::EigenBase

Parameters

function	Function name (for error messages)
name	Variable name (for error messages)
theta	Vector to test

Exceptions

`std::invalid_argument`	if theta is a 0-vector
`std::domain_error`	if the vector does not sum to zero

This function tests that the sum is within the tolerance specified by CONSTRAINT_TOLERANCE.

Template Parameters

T	A standard vector with inner type inheriting from Eigen::EigenBase

Parameters

function	Function name (for error messages)
name	Variable name (for error messages)
theta	Vector to test.

Exceptions

`std::invalid_argument`	if theta is a 0-vector
`std::domain_error`	if the vector does not sum to zero

Definition at line 31 of file check_sum_to_zero.hpp.