.. index:: backend_random
.. _backend_random/0:

**object**

``backend_random``
==================

Random number generator predicates using the backend Prolog compiler built-in random generator.

| **Author:** Paulo Moura
| **Version:** 1.5
| **Date:** 2019/3/7

| **Compilation flags:**
|    ``static, context_switching_calls``


| **Implements:**
|    ``public`` :ref:`randomp <randomp/0>`

Public interface
----------------

(see related entities)

Protected interface
-------------------

(see related entities)

Private predicates
------------------

(see related entities)

Operators
---------

(none)

Remarks
-------

* **Implementation**: The backend Prolog compiler built-in random generator is only used for the basic random/1, get_seed/1, and set_seed/1 predicates.

* **Portability**: B-Prolog, CxProlog, ECLiPSe, JIProlog, Lean Prolog, Qu-Prolog, Quintus Prolog do not provide implementations for the get_seed/1 and set_seed/1 predicates and calling these predicates simply succeed without performing any action.

.. seealso::

   :ref:`random <random/0>`, :ref:`fast_random <fast_random/0>`

