.. This file is part of Logtalk https://logtalk.org/ SPDX-FileCopyrightText: 1998-2024 Paulo Moura <pmoura@logtalk.org> SPDX-License-Identifier: Apache-2.0

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

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.. rst-class:: align-right

built-in method

.. index:: pair: evaluation_error/1; Built-in method .. _methods_evaluation_error_1:

evaluation_error/1

Description

::

evaluation_error(Error)

Throws an evaluation error. Used when evaluating an arithmetic expression generates an exception. This built-in method is declared private and thus cannot be used as a message to an object. Calling this predicate is equivalent to the following sequence of goals:

::

..., context(Context), throw(error(evaluation_error(Error), Context)).

This allows the user to generate errors in the same format used by the runtime.

Possible values for Error include:

• float_overflow
• int_overflow
• undefined
• underflow
• zero_divisor

Modes and number of proofs

::

evaluation_error(@nonvar) - error

Errors

| When called: | evaluation_error(Exception)

Examples

::

..., Divisor =:= 0, evaluation_error(zero_divisor).

.. seealso::

:ref:methods_catch_3, :ref:methods_throw_1, :ref:methods_context_1, :ref:methods_instantiation_error_0, :ref:methods_uninstantiation_error_1, :ref:methods_type_error_2, :ref:methods_domain_error_2, :ref:methods_consistency_error_3, :ref:methods_existence_error_2, :ref:methods_permission_error_3, :ref:methods_representation_error_1, :ref:methods_resource_error_1, :ref:methods_syntax_error_1, :ref:methods_system_error_0