Operators |
tuple_is_real — Test if the internal representation of a tuple is of type real.
tuple_is_real tests if the internal representation of the input tuple T is of type real. In that case the value 1 (true) is returned in IsReal, otherwise the value 0 (false) is returned. If a tuple consists of real elements only, IsReal can nevertheless be 0 in case the internal representation is H_TYPE_MIXED; see tuple_type for details.
If the input tuple is empty, the operator returns 1.
HDevelop provides an in-line operation for tuple_is_real , which can be used in an expression in the following syntax:
Even if all tuple elements are of type real, tuple_is_real returns 0 (false) if the internal representation of the tuple is of type H_TYPE_MIXED. To test if the elements of the tuple are of type real the operator tuple_is_real_elem should be used.
Input tuple.
Is the input tuple of type real?
tuple_is_real ([3.1416,'pi',3], IsRealA) * IsRealA = false tuple_is_real ([1.0,2.0,3.0], IsRealB) * IsRealB = true tuple_is_real ([], IsRealC) * IsRealC = true
If the parameters are valid, the operator tuple_is_real returns the value 2 (H_MSG_TRUE).
tuple_type, tuple_is_number, tuple_is_real_elem
Foundation
Operators |