Using Simulink

Abs

Output the absolute value of the input.

Library

Math

Description

The Abs block generates as output the absolute value of the input.

Data Type Support

An Abs block accepts a real- or complex-valued input of any type and outputs a real value of the same data type as the input.

Dialog Box

Saturate on integer overflow

When checked (default), the block maps signed integer input elements corresponding to the most negative value of that data type to the most positive value of that datatype.

• For 8-bit integers, -128 is mapped to 127.
• For 16-bit integers, -32768 maps to 32767.
• For 32-bit integers, -2147483648 maps to 2147483647.

When unchecked, the behavior of the block is undefined for signed integer input elements corresponding to the most negative value.

Characteristics

Direct Feedthrough	Yes
Sample Time	Inherited from driving block
Scalar Expansion	N/A
Dimensionalized	Yes
Zero Crossing	Yes, to detect zero

Simulink Block Libraries

Algebraic Constraint