Relational Operator (Using Simulink)

Perform the specified relational operation on the input.

Library

Math

Description

The Relational Operator block performs a relational operation on its two inputs and produces output according to the following table.


Operator	Output
`==`	TRUE if the first input is equal to the second input
`~=`	TRUE if the first input is not equal to the second input
`<`	TRUE if the first input is less than the second input
`<=`	TRUE if the first input is less than or equal to the second input
`>=`	TRUE if the first input is greater than or equal to the second input
`>`	TRUE if the first input is greater than the second input

If the result is TRUE, the output is 1; if FALSE, it is 0. You can specify inputs as scalars, vectors, or a combination of a scalar and a vector:

For scalar inputs, the output is a scalar.
For vector inputs, the output is a vector, where each element is the result of an element-by-element comparison of the input vectors.
For mixed scalar/vector inputs, the output is a vector, where each element is the result of a comparison between the scalar and the corresponding vector element.

The block icon displays the selected operator.

Data Type Support

A Relational Operator block accepts real signals of any data type. It outputs a signal of type boolean, unless boolean compatibility mode is enabled (see "Enabling Strict Boolean Type Checking"), in which case the block outputs a signal of type double.

Parameters and Dialog Box

Operator

The relational operator to be applied to the block inputs.

Characteristics


Direct Feedthrough	Yes
Sample Time	Inherited from driving block
Scalar Expansion	Of inputs
Vectorized	Yes
Zero Crossing	Yes, to detect when the output changes

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