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Prelookup and Interpolation Blocks

The following examples show the benefits of using Prelookup and Interpolation Using Prelookup blocks.


Use an index search to relate inputs to table data, followed by an interpolation and extrapolation stage that computes outputs

Enables reuse of index search results to look up data in multiple tables, which reduces simulation time

For more information, see Using the Prelookup and Interpolation Blocks.

Set breakpoint and table data types explicitly

Lowers memory required to store:

  • Breakpoint data that uses a smaller type than the input signal

  • Table data that uses a smaller type than the output signal

For more information, see Saving Memory in Prelookup and Interpolation Blocks by Using Smaller Data.

Provides easier sharing of:

  • Breakpoint data among Prelookup blocks

  • Table data among Interpolation Using Prelookup blocks

For more information, see Sharing Parameters in Prelookup and Interpolation Blocks (Fixed-Point Designer).

Enables reuse of utility functions in the generated code

For more information, see Shared Utility Functions for Prelookup Blocks (Fixed-Point Designer).

Set the data type for intermediate results explicitly

Enables use of higher precision for internal computations than for table data or output data

For more information, see High Precision Calculations in Interpolation Block (Fixed-Point Designer).

See Also


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