Recommended Settings Summary for Model Configuration Parameters

R2026b

The following tables summarizes the impact of each configuration parameter on debugging, traceability, efficiency, and safety considerations, and indicates the factory default configuration settings for the ERT target. The Simulink^® Coder™ configuration parameters are documented in Recommended Settings Summary for Model Configuration Parameters. For additional details, click the links in the Configuration Parameter column.

Mapping of Application Requirements to the Optimization Pane

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Application lifespan (days)	No impact	No impact	Optimal finite value	inf	auto
Optimize using the specified minimum and maximum values	Off	Off	On	No impact	Off
Remove root level I/O zero initialization	No impact	No impact	On (execution, ROM), No impact (RAM)	No recommendation	On
Remove internal data zero initialization	No impact	No impact	On (execution, ROM), No impact (RAM)	No recommendation	On
Remove Code from Tunable Parameter Expressions That Saturate Out-of-Range Values	Off	Off	On (execution, ROM)	No recommendation	On
Remove code that protects against integer division arithmetic exceptions	No impact	No impact	On (execution, ROM)	Off	Off
Pack Boolean data into bitfields	No impact	No Impact	Off (execution, ROM), On (RAM)	No impact	Off
Pass reusable subsystem outputs as	No impact	No impact	Individual arguments (execution, RAM), Structure reference (ROM)	No impact	Individual Arguments
Automatically schedule for-loops	Off	Off	On (execution speed)	No impact	Off
Bitfield declarator type specifier	No impact	No impact	Target dependent	No impact	uint_T
Operator to represent Bitwise and Logical Operator blocks	No impact	No impact	Bitwise operator (ROM efficiency)	No impact	Same as modeled
Perform in-place updates for Assignment and Bus Assignment blocks	No impact	No impact	On	No recommendation	On
Reuse buffers of different sizes and dimensions	Off	Off	On	No impact	On
Optimize global data access	No impact	No impact	Use global to hold temporary results (RAM), Minimize global data access (ROM)	No impact	Use global to hold temporary results
Use signal labels to guide buffer reuse	Off	Off	On (execution, ROM, RAM)	No impact	Off
Generate parallel for-loops	Off	Off	On (execution speed)	No impact	Off
Specify custom optimizations	Off and set Level parameter to Minimize (debugging)	Off and set Level parameter to Minimize (debugging)	Depends on individual parameter settings	No impact	Off
Level	Minimum (debugging)	Minimum (debugging)	Based on your goals, choose Balanced with Readability or Maximum. If you choose Maximum, set the Priority parameter.	No impact	level2
Priority	No impact	No impact	Minimize RAM (RAM), Maximum execution speed (Speed), Balance RAM and speed (Balanced)	No impact	Balanced
Optimize block operation order in generated code	No impact	No impact	Improved Code Execution Speed	No recommendation	speed
Reuse buffers for Data Store Read and Data Store Write blocks	No impact	Off	On	No recommendation	On
Remove local variable initialization to zero value	No impact	No impact	On	No recommendation	On
Reuse output buffers of Model blocks	Off	Off	On	No impact	On
Simplify array indexing	No impact	No impact	On (execution speed)	No impact	Off
Unify buffer reuse candidates	Off	Off	On	No impact	Off
Use C restrict qualifier	No impact	No impact	On	Off	Off

Mapping of Application Requirements to the Code Generation Pane: General

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Shared coder dictionary	No recommendation	No recommendation	No recommendation	No recommendation	''
Generate Halide code	No recommendation	No recommendation	Yes	No recommendation	Off
Prioritized objectives	Debugging	Traceability	Execution efficiency (execution), ROM efficiency (ROM), RAM efficiency (RAM)	Safety precaution	{}

Mapping of Application Requirements to the Code Generation Pane: Memory Sections Parameters

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Package	No impact	No impact	No impact	No impact	---None---
Initialize/Terminate	No impact	No impact	No impact	No impact	Default
Execution	No impact	No impact	No impact	No impact	Default
Shared utility	No impact	No impact	No impact	No impact	Default
Constants	No impact	No impact	No impact	No impact	Default
Inputs/Outputs	No impact	No impact	No impact	No impact	Default
Internal data	No impact	No impact	No impact	No impact	Default
Parameters	No impact	No impact	No impact	No impact	Default
Validation results	No impact	No impact	No impact	No impact	No package selected.

Mapping of Application Requirements to the Code Generation Pane: Report Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Code-to-model	On	On	No impact	No recommendation	Off
Model-to-code	On	On	No impact	No recommendation	Off
Generate model Web view	No impact	No impact	No impact	No impact	Off
Eliminated / virtual blocks	On	On	No impact	No recommendation	Off
Traceable Simulink blocks	On	On	No impact	No recommendation	Off
Traceable Stateflow objects	On	On	No impact	No recommendation	Off
Traceable MATLAB functions	On	On	No impact	No recommendation	Off
Generate static code metrics	No impact	No impact	No impact	No impact	Off
Summarize which blocks triggered code replacements	No impact	No impact	No impact	No impact	Off

Mapping of Application Requirements to the Code Generation Pane: Comments Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Simulink block descriptions	On	On	No impact	No impact	On
Simulink data object descriptions99320oo	On	On	No impact	No impact	On
Custom comments (MPT objects only)	On	On	No impact	No impact	Off
Custom comments function	Valid file name	Valid file name	No impact	No impact	''
Stateflow object descriptions	On	On	No impact	No impact	On
Requirements in block comments	On	On	No impact	No recommendation	Off
Connected annotations in block comments	On	On	No impact	No impact	Off
Trace to model using	No impact	No impact	No impact	No recommendation	BlockPathComment
Comment style	No impact	No impact	No impact	No impact	Auto
Insert Polyspace comments	On	On	No impact	No impact	Off
MATLAB user comments	On	On	No impact	No impact	Off
Operator annotations	No impact	On	No impact	No recommendation	On

Mapping of Application Requirements to the Code Generation Pane: Identifiers Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Global variables	No impact	Use default	No impact	No recommendation	$R$N$M
Global types	No impact	Use default	No impact	No recommendation	$N$R$M_T
Field name of global types	No impact	Use default	No impact	No recommendation	$N$M
Subsystem methods	No impact	Use default	No impact	No recommendation	$R$N$M$F
Subsystem method arguments	No impact	Use default	No impact	No recommendation	rt$I$N$M
Local temporary variables	No impact	Use default	No impact	No recommendation	$N$M
Local block output variables	No impact	Use default	No impact	No recommendation	rtb_$N$M
Constant macros	No impact	Use default	No impact	No recommendation	$R$N$M
Shared utilities identifier format	No impact	Use default	No impact	No recommendation	$N$C
Minimum mangle length	No impact	1	No impact	No impact	1
Maximum identifier length	Valid value	>30	No impact	>30	31
System-generated identifiers	No impact	No impact	No impact	No impact	Shortened
Generate scalar inlined parameters as	No impact	Macros	Literals	No impact	Literals
Use the same reserved names as Simulation Target	No impact	No impact	No impact	No impact	Off
Shared checksum length	No impact	No impact	No impact	No impact	8
EMX array utility functions identifier format	No impact	No impact	No impact	No recommendation	emx$M$N
EMX array types identifier format	No impact	No impact	No impact	No recommendation	emxArray_$M$N
Custom token text	No impact	Set a custom string and use $U in symbols	No impact	No impact	' '
#define naming	No impact	Force upper case	No impact	No impact	None
Parameter naming	No impact	Force upper case	No impact	No impact	None
Signal naming	No impact	Force upper case	No impact	No impact	None
MATLAB function	No impact	No impact	No impact	No impact	''

Mapping of Application Requirements to the Code Generation Pane: Interface Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Support: floating-point numbers	No impact	No impact	Off — for integer only	No impact	On
Support: complex numbers	No impact	No impact	Off (for real only)	No impact	On
Support: absolute time	No impact	No impact	Off	No recommendation	On
Support: continuous time	No impact	No impact	Off (execution, ROM), No impact (RAM)	No recommendation	Off
Support non-inlined S-functions	No impact	No impact	Off	No recommendation	Off
Support: variable-size signals	No impact	No impact	No impact	No recommendation	Off
Multiword type definitions	No impact	No impact	No impact	No recommendation	System defined
Maximum word length	No impact	No impact	No impact	No recommendation	256 for ERT targets 2048 for GRT targets
Pass root-level I/O as	No impact	No impact	No impact	No impact	Individual arguments
Use dynamic memory allocation for model initialization	No impact	No impact	No impact	No recommendation	Off
Terminate function required	No impact	No impact	No impact	No recommendation	On
Remove error status field in real-time model data structure	Off	No impact	On	No recommendation	Off
Include model types in model class	No impact	No impact	On	No recommendation	On
Combine signal/state structures	Off	No impact	No impact	On	On
Generate destructor	No impact	No impact	No impact	No recommendation	On
Use dynamic memory allocation for model block instantiation	No impact	No impact	On	No recommendation	Off
Code replacement libraries	No impact	No impact	Valid libraries	No impact	None
Implement each data store block as a unique access point	On	On	No impact	No impact	Off
Existing shared code	No impact	Valid variable name	No impact	No impact	none
Generate separate internal data per entry-point function	No impact	No impact	On	No impact	Off
Ignore custom storage classes	No impact	No impact	No impact	No impact	Off
Ignore test point signals	Off	No impact	On	No impact	Off
MAT-file variable name modifier	No impact	No impact	No impact	No impact	rt_
Preserve MATLAB namespaces in generated code	No impact	No impact	No impact	No impact	On
Remove disable function	No impact	Off	On	No recommendation	Off
Remove reset function	No impact	Off	On	No recommendation	On
Implement root-level I/O as	No impact	No impact	No impact	No impact	Auto

Mapping of Application Requirements to the Code Generation Pane: Verification Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Measure task execution time	On	On	Off	No recommendation	Off
Measure function execution times	On	On	Off	No recommendation	Off
Workspace variable	No impact	Valid MATLAB® variable name	No impact	No impact	none
Save options	All data	All data	Summary data only	No impact	Summary data only
Measure task stack usage	On	On	Off	No recommendation	Off
Stack workspace variable	No impact	Valid MATLAB variable name	No impact	No impact	stackProfile
Third-party tool	LDRAcover or LDRA tool suite	LDRAcover or LDRA tool suite	None (code coverage off)	No recommendation	None (code coverage off)
Enable portable word sizes	On	On	Off	No impact	Off
Enable source-level debugging for SIL or PIL	On	On	Off	No impact	Off
Create block	On	No impact	No impact	No impact	None

Mapping of Application Requirements to the Code Generation Pane: Code Style Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Parentheses level	Nominal (Optimize for readability)	Nominal (Optimize for readability)	Minimum (Rely on C/C++ operators for precedence)	No recommendation	Nominal (Optimize for readability)
Preserve operand order in expression	On	On	Off	No recommendation	Off
Preserve condition expression in if statement	On	On	Off (execution, ROM), No impact (RAM)	No recommendation	Off
Convert if-elseif-else patterns to switch-case statements	No impact	Off	On (execution, ROM), No impact (RAM)	No impact	On
Preserve extern keyword in function declarations	No impact	No impact	No impact	No impact	On
Preserve static keyword in function declarations	No impact	No impact	On (execution, ROM)	No impact	On
Suppress generation of default cases for switch statements if unreachable	On	On	On (execution, ROM), No impact (RAM)	No recommendation	On
Replace multiplications by powers of two with signed bitwise shifts	No impact	No impact	On	No impact	On
Casting modes	Nominal	Nominal	Nominal	Standards Compliant	Nominal
Static array container type	No impact	No impact	No impact	No recommendation	C-style array
Indent style	K&R	K&R	K&R	K&R	K&R
Indent size	2	2	2	2	2
Dynamic array container type	No impact	No impact	No impact	No recommendation	std::vector
Allow right shifts on signed integers	No impact	No impact	On	No impact	On
Maximum line width	No impact	No impact	No impact	No impact	80
Newline style	No impact	No impact	No impact	No impact	Default

Mapping of Application Requirements to the Code Generation Pane: Templates Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Code templates: Source file (*.c) template	No impact	No impact	No impact	No impact	ert_code_template.cgt
Code templates: Header file (*.h) template	No impact	No impact	No impact	No impact	ert_code_template.cgt
Data templates: Source file (*.c) template	No impact	No impact	No impact	No impact	ert_code_template.cgt
Data templates: Header file (*.h) template	No impact	No impact	No impact	No impact	ert_code_template.cgt
File customization template	No impact	No impact	No impact	No impact	example_file_process.tlc
Generate an example main program	No impact	No impact	No impact	No impact	On
Target operating system	No impact	No impact	No impact	No impact	BareBoardExample
Enable custom file banner	No impact	No impact	No impact	No impact	On
Generate full file banner	No impact	No impact	No impact	No impact	On

Mapping of Application Requirements to the Code Generation Pane: Code Placement Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Data definition	No impact	Valid value	No impact	No impact	Auto
Data definition filename	No impact	Valid value	No impact	No impact	global.c
Data declaration	No impact	Valid value	No impact	No impact	Auto
Data declaration filename	No impact	Valid value	No impact	No impact	global.h
Use owner from data object for data definition placement	No impact	Valid value	No impact	No impact	off
#include file delimiter	No impact	Valid value	No impact	No impact	Auto
Signal display level	No impact	Valid integer	No impact	No impact	10
Parameter tune level	No impact	Valid integer	No impact	No impact	10
File packaging format	No impact	No impact	No impact	No impact	Modular
Data files	No impact	Use default	No impact	No recommendation	$R_data
Header files	No impact	Use default	No impact	No recommendation	$R$E
Source files	No impact	Use default	No impact	No recommendation	$R$E
Rate Transition block code	Function	Function	Inline	No impact	Inline

Mapping of Application Requirements to the Code Generation Pane: Data Type Replacement Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Specify custom data type names	No impact	On	No impact	No impact	Off
Replacement Name: double	No impact	Valid character vector	No impact	No recommendation	''
Boolean false identifier	No impact	A valid character vector	No impact	No recommendation	false
Boolean true identifier	No impact	A valid character vector	No impact	No recommendation	true
Coder typedefs compatibility	No impact	No impact	No impact	No impact	Off
Data type replacement	No impact	No impact	No impact	Use C data types with fixed-width integers improves compliance with C and C++ standards.	Depends on target settings
Implement images using OpenCV Mat class	No impact	On	No impact	No impact	Off
16-bit integer maximum identifier	No impact	A valid character vector	No impact	No recommendation	Depends on DataTypeReplacement
32-bit integer maximum identifier	No impact	A valid character vector	No impact	No recommendation	Depends on DataTypeReplacement
64-bit integer maximum identifier	No impact	A valid character vector	No impact	No recommendation	Depends on DataTypeReplacement
8-bit integer maximum identifier	No impact	A valid character vector	No impact	No recommendation	Depends on DataTypeReplacement
16-bit integer minimum identifier	No impact	A valid character vector	No impact	No recommendation	Depends on DataTypeReplacement
32-bit integer minimum identifier	No impact	A valid character vector	No impact	No recommendation	Depends on DataTypeReplacement
64-bit integer minimum identifier	No impact	A valid character vector	No impact	No recommendation	Depends on DataTypeReplacement
8-bit integer minimum identifier	No impact	A valid character vector	No impact	No recommendation	Depends on DataTypeReplacement
Replacement Name: boolean	No impact	A valid character vector	No impact	No recommendation	''
Replacement Name: char	No impact	A valid character vector	No impact	No recommendation	''
Replacement Name: int	No impact	A valid value	No impact	No recommendation	''
Replacement Name: int16	No impact	A valid character vector	No impact	No recommendation	''
Replacement Name: int32	No impact	A valid character vector	No impact	No recommendation	''
Replacement Name: int64	No impact	A valid character vector	No impact	No recommendation	''
Replacement Name: int8	No impact	A valid character vector	No impact	No recommendation	''
Replacement Name: single	No impact	A valid character vector	No impact	No recommendation	''
Replacement Name: uint	No impact	A valid character vector	No impact	No recommendation	''
Replacement Name: uint16	No impact	A valid character vector	No impact	No recommendation	''
Replacement Name: uint32	No impact	A valid character vector	No impact	No recommendation	''
Replacement Name: uint64	No impact	A valid character vector	No impact	No recommendation	''
Replacement Name: uint8	No impact	A valid character vector	No impact	No recommendation	''
Type limit identifier replacement header file	No impact	A valid character vector	No impact	No recommendation	empty
16-bit unsigned integer maximum identifier	No impact	A valid character vector	No impact	No recommendation	Depends on DataTypeReplacement
32-bit unsigned integer maximum identifier	No impact	A valid character vector	No impact	No recommendation	Depends on DataTypeReplacement
64-bit unsigned integer maximum identifier	No impact	A valid character vector	No impact	No recommendation	Depends on DataTypeReplacement
8-bit unsigned integer maximum identifier	No impact	A valid character vector	No impact	No recommendation	Depends on DataTypeReplacement