.. index:: single: mi_metric(Stroud) .. _mi_metric/1:

.. rst-class:: right

object

mi_metric(Stroud)

• Stroud - Halstead metric coefficient for computing the time required to program. Computes the maintainability index metric based on the Cyclomatic Complexity, Halstead Volume, and lines of code metrics for an entity.

  | Availability: | logtalk_load(code_metrics(loader))

  | Author: Paulo Moura | Version: 1:0:0 | Date: 2026-03-14

  | Compilation flags: | static, context_switching_calls

  | Imports: | public :ref:`code_metrics_utilities <code_metrics_utilities/0>` | public :ref:`code_metric <code_metric/0>` | Uses: | :ref:`cc_metric <cc_metric/0>` | :ref:`halstead_metric(Stroud) <halstead_metric/1>` | :ref:`lines_metric <lines_metric/0>`

  | Remarks:

  • Formula: The original equation is used: MI = 171 - 5.2 * ln(V) - 0.23 * C - 16.2 * ln(L). V is the Halstead volume, C is the Cyclomatic Complexity, and L is the number of code lines.
  • Entity score: Represented as the compound term mi(MI).

  | Inherited public predicates: |  :ref:`code_metric/0::all/0`  :ref:`code_metric/0::all/1`  :ref:`code_metric/0::all_score/1`  :ref:`options_protocol/0::check_option/1`  :ref:`options_protocol/0::check_options/1`  :ref:`options_protocol/0::default_option/1`  :ref:`options_protocol/0::default_options/1`  :ref:`code_metric/0::directory/1`  :ref:`code_metric/0::directory/2`  :ref:`code_metric/0::directory_score/2`  :ref:`code_metric/0::entity/1`  :ref:`code_metric/0::entity_score/2`  :ref:`code_metric/0::file/1`  :ref:`code_metric/0::file/2`  :ref:`code_metric/0::file_score/2`  :ref:`code_metric/0::format_entity_score//2`  :ref:`code_metric/0::library/1`  :ref:`code_metric/0::library/2`  :ref:`code_metric/0::library_score/2`  :ref:`options_protocol/0::option/2`  :ref:`options_protocol/0::option/3`  :ref:`code_metric/0::rdirectory/1`  :ref:`code_metric/0::rdirectory/2`  :ref:`code_metric/0::rdirectory_score/2`  :ref:`code_metric/0::rlibrary/1`  :ref:`code_metric/0::rlibrary/2`  :ref:`code_metric/0::rlibrary_score/2`  :ref:`options_protocol/0::valid_option/1`  :ref:`options_protocol/0::valid_options/1`  

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Public predicates

(no local declarations; see entity ancestors if any)

Protected predicates

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Private predicates

(no local declarations; see entity ancestors if any)

Operators

(none)