Simulink Reference

Rounding Function

Apply a rounding function to a signal

Library

Math Operations

Description

The Rounding Function block applies a rounding function to the input signal to produce the output signal.

You can select one of the following rounding functions from the Function list:

• floor

• Rounds each element of the input signal to the nearest integer value towards minus infinity.

• ceil

• Rounds each element of the input signal to the nearest integer towards positive infinity.

• round

• Rounds each element of the input signal to the nearest integer.

• fix

• Rounds each element of the input signal to the nearest integer towards zero.

The name of the selected function appears on the block.

The input signal can be a scalar, vector, or matrix signal having real- or complex-valued elements of type double. The output signal has the same dimensions, data type, and numeric type as the input. Each element of the output signal is the result of applying the selected rounding function to the corresponding element of the input signal.

Use the Rounding Function block instead of the Fcn block when you want vector or matrix output, because the Fcn block can produce only scalar output.

Data Type Support

The Rounding Function block accepts and outputs real signals of type double or single.

Parameters and Dialog Box

Function

The rounding function.

Sample time (-1 for inherited)

Specify the time interval between samples. To inherit the sample time, set this parameter to -1. See Specifying Sample Time in the online documentation for more information.

Characteristics

Direct Feedthrough	Yes
Sample Time	Inherited from driving block
Scalar Expansion	N/A
Dimensionalized	Yes
Zero Crossing	No

Reshape

Saturation

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