Preserve operand order in expression

Preserve order of operands in expressions

Model Configuration Pane: Code Generation / Code Style

Description

Specify whether to preserve order of operands in expressions.

off (default) | on

Default: off

On: Preserves the expression order specified in the model. Select this option to increase readability of the code or for code traceability purposes.
Note
This setting applies to Embedded Coder^® only and might not affect order of operands inside Stateflow^® charts.
Off: Optimizes efficiency of code for nonoptimized compilers by reordering commutable operands to make expressions left-recursive.

Compare the order of operands in expressions in the generated code when you set Preserve operand order in expression to different values.

Here is generated code that generated using the default Preserve operand order in expression value off:

(B+C)*A

Here is the same code generated with Preserve operand order in expression set to on:

A*(B+C)

Parameter: PreserveExpressionOrder

Type: character vector

Value: 'on' | 'off'

Default: 'off'

Introduced in R2007a