Simplify array indexing

Replace multiply operations in array indices when accessing arrays in a loop

Model Configuration Pane: Code Generation / Optimization

Description

The Simplify array indexing parameter instructs the code generator whether to replace multiply operations in array indices when accessing arrays in a loop.

Settings

off (default) | on

Default: Off

On

In array indices, replace multiply operations with add operations when accessing arrays in a loop in the generated code. When the original signal is multidimensional, the Embedded Coder^® generates one-dimensional arrays, resulting in multiply operations in the array indices. Using this setting eliminates costly multiply operations when accessing arrays in a loop in the C/C++ program. This optimization (commonly referred to as strength reduction) is particularly useful if the C/C++ compiler on the target platform does not have similar functionality. The absence of multiply operations in the C/C++ program does not imply that the C/C++ compiler does not generate multiply instructions.

Off

Leave multiply operations in array indices when accessing arrays in a loop.

Recommended Settings

Application	Setting
Debugging	No impact
Traceability	No impact
Efficiency	On (execution speed)
Safety precaution	No impact

Programmatic Use

Parameter: StrengthReduction

Type: character vector

Value: 'on' | 'off'

Default: 'off'

Version History

Introduced in R2009a