is_real (MathScript RT Module Function)
Owning Class: membership
Requires: MathScript RT Module
Syntax
c = is_real(a)
Legacy Name: isreal
Description
Determines whether a matrix is real. A number is real if and only if in a=Re(a)+Im(a)*i, the second term Im(a) is 0. A matrix is real if and only if all elements in that matrix are real.
Inputs
| Name | Description |
|---|---|
| a | Specifies a scalar, vector, or matrix of any data type but plot objects and (Control Design and Simulation Module) state-space, transfer function, and zero-pole-gain models. |
Outputs
| Name | Description |
|---|---|
| c | Returns 1 if a is a real matrix. Otherwise, this function returns 0. c is a Boolean. |
Examples
C = is_real([5+0i, 7, 6, 789-8.3i])
C = is_real('der')