Compute element-wise product of the input signals
Library
Math Functions / Math Operations
Description
The Product block computes the element-wise product of its input signals.
The block warns or errors out when an integer output overflows during simulation. To configure, select for your model in the Simulink® Editor, then set the Wrap on overflow, or Saturate on overflow parameter.
Data Type Support
The Product block outputs the result of multiplying two inputs. Inputs can be two scalars, a scalar and a non-scalar, and two non-scalars of the same dimension. If one of the inputs is scalar and other input is vector/matrix then the scalar input is expanded to match the dimension of the other input to perform the operation. If input signals are both integer data types, such as int16, the datatype of the output is also an integer datatype int16. Hence an overflow of wrap around (no saturation) is likely if the output exceeds the range that is represented with int16. If the operation is to be applied without loss of precision or range, use fixed-point data types. If you want to narrow the bit width of the output signal, you can run it through a Data Type Conversion block and select a fixed-point data type that saturates.
The output dimension is the same as that of the inputs if both inputs are either scalar or non scalar. If one input is scalar and the other is a vector/matrix then the output dimension matches the dimension of the vector/matrix input. The output type is same as that of the inputs if both inputs are of the same type. Otherwise, the output type is defined as follows.
| Input Type | Output Type |
|---|---|
| (double, single) | double |
| (double, int) | double |
| (double, half) | double |
| (double, fixed) | double |
| (double, Boolean) | double |
| (single, int) | single |
| (single, half) | single |
| (single, fixed) | single |
| (single, Boolean) | single |
| (half, int) | half |
| (half, fixed) | half |
| (half, Boolean) | half |
| (fixed, int) | fixed |
| (fixed, Boolean) | fixed |
| (int, Boolean) | int |
Parameters
Saturate on integer overflow
This parameter specifies whether integer overflow is handled by wrapping (default) or by saturating. This parameter is relevant only if the output is integral (int8, int16, int32, uint8, uint16, uint32).
Settings for the Saturate on integer overflow parameter are:
| Setting | Description |
|---|---|
| Not selected | Integer overflow is handled by wrapping. |
| Selected | Integer overflow is handled by saturation. |
When overflow is detected, the Diagnostic Viewer displays messages that depend on the diagnostic action you specify in the Simulink Editor. To configure, select for your model in the Simulink Editor, then set the Wrap on overflow or Saturate on overflow parameter.