◆ validate_positive_index()

void stan::math::validate_positive_index	(	const char *	var_name,
		const char *	expr,
		int	val
	)

inline

Check that size is at least 1.

Used for simplexes and other constraints that do a (size - 1) operation.

Parameters

var_name	Name of variable
expr	Expression in which variable is declared
val	Size to check

Exceptions

std::invalid_argument if size is less than 1