.. index:: single: root_finder(Function) .. _root_finder/1:

.. rst-class:: right

category

root_finder(Function)

• Function - Object implementing univariate_function_protocol. Common option handling and validation for scalar root finders.

  | Availability: | logtalk_load(numerical_analysis(loader))

  | Author: Paulo Moura | Version: 1:0:0 | Date: 2026-09-04

  | Compilation flags: | static

  | Implements: | public :ref:`root_finder_protocol <root_finder_protocol/0>` | Extends: | public :ref:`options <options/0>`

  | Remarks: | (none)

  | Inherited public predicates: | Â :ref:`options_protocol/0::check_option/1` Â :ref:`options_protocol/0::check_options/1` Â :ref:`options_protocol/0::default_option/1` Â :ref:`options_protocol/0::default_options/1` Â :ref:`root_finder_protocol/0::find_root/2` Â :ref:`root_finder_protocol/0::find_root/3` Â :ref:`root_finder_protocol/0::find_root/4` Â :ref:`options_protocol/0::option/2` Â :ref:`options_protocol/0::option/3` Â :ref:`options_protocol/0::valid_option/1` Â :ref:`options_protocol/0::valid_options/1` Â

  .. contents:: :local: :backlinks: top

Public predicates

(no local declarations; see entity ancestors if any)

Protected predicates

.. index:: evaluate_function/2 .. _root_finder/1::evaluate_function/2:

evaluate_function/2 ^^^^^^^^^^^^^^^^^^^^^^^

Evaluates the function and checks that it returns a number.

| Compilation flags: | static

| Template: | evaluate_function(Argument,Value) | Mode and number of proofs: | evaluate_function(+number,-number) - one_or_error

| Exceptions: | The function returns a non-numeric value: | domain_error(function_value,Value)

---

.. index:: check_bracket/3 .. _root_finder/1::check_bracket/3:

check_bracket/3 ^^^^^^^^^^^^^^^^^^^

Checks and unpacks a root bracket.

| Compilation flags: | static

| Template: | check_bracket(Bracket,Lower,Upper) | Mode and number of proofs: | check_bracket(+compound,-number,-number) - one_or_error

| Exceptions: | Bracket is a variable: | instantiation_error | Bracket is not a valid increasing numeric bracket: | domain_error(root_bracket,Bracket)

---

Private predicates

(no local declarations; see entity ancestors if any)

Operators

(none)