Bias - Add bias to input

Library

Math Operations

Description

The Bias block adds a bias, or offset, to the input signal according to

Y = U + bias,

where U is the block input and Y is the output.

Data Type Support

The Bias block accepts and outputs real or complex values of the following data types:

• Floating point

• Built-in integer

• Fixed point

For more information, see Data Types Supported by Simulink in the Simulink documentation.

Parameters and Dialog Box

Bias

Specify the value of the offset to add to the input signal.

Saturate on integer overflow

Action	Reasons for Taking This Action	What Happens for Overflows	Example
Select this check box.	Your model has possible overflow and you want explicit saturation protection in the generated code.	Overflows saturate to either the minimum or maximum value that the data type can represent.	An overflow associated with a signed 8-bit integer can saturate to -128 or 127.
Do not select this check box.	You want to optimize efficiency of your generated code. You want to avoid overspecifying how a block handles out-of-range signals. For more information, see Checking for Signal Range Errors.	Overflows wrap to the appropriate value that is representable by the data type.	The number 130 does not fit in a signed 8-bit integer and wraps to -126.

When you select this check box, saturation applies to every internal operation on the block, not just the output or result. In general, the code generation process can detect when overflow is not possible. In this case, the code generator does not produce saturation code.

Characteristics

Direct Feedthrough	Yes
Sample Time	Inherited from the driving block
Scalar Expansion	Yes
States	0
Dimensionalized	Yes
Zero-Crossing Detection	No

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