hisl_0078: Usage of identical modeling patterns

R2026b

Account for identical and similar modeling patterns to reduce code complexity

Since R2024a

Usage: High-Integrity System Modeling

Guideline ID: hisl_0078

Rules

hisl_0078: Usage of identical modeling patterns

To reduce the complexity of generated code and increase its robustness, account for identical and similar modeling patterns in the model.

Rationale

  • Improve model compartmentalization.

  • Improve model and code readability.

  • Improve model and code reusability.

Verification

Check usage of identical modeling patterns (Simulink Check)

Tips

  • Clones are either identical or similar modeling patterns in the model. Clones can increase the model complexity and complexity of generated code. They also hamper readability and maintainability. Clone Detector (Simulink Check) app can be used to detect clone patterns. Library blocks of the clones can be created and replaced with links to those library blocks or from an existing library.

Industry Standards

  • DO-331 Section MB.6.3.2.e 'Low-level requirements conform to standards'

  • IEC 61508-3, Table B.9 (1) 'Software module size limit'

  • ISO 26262-6, Table 1 (1a) – Enforcement of low complexity

  • ISO 26262-6, Table 3 (1b) – Restricted size and complexity of software components

  • ISO 25119-3, Table 3, 2.4 – Modular approach

  • EN 50128, Table A.12 (8) 'Limited size and complexity of Functions, Subroutines and Methods'

  • EN 50657, Table A.12 (8) 'Limited size and complexity of Functions, Subroutines and Methods'

  • EN 50716, Table A.12 (3) 'Limited size and complexity of Functions, Subroutines and Methods'

Version History

Introduced in R2024a

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