.. highlightlang:: us

.. _isfinite:

isfinite
========

.. index:: isfinite

.. us.tag  isfinite ENGLISH New593

:ref:`isfinite` determines whether the given number is finite.

.. function::  r = isfinite(m)

.. us.return

**Return Value**

*r* is TRUE (1), if *m* is finit, i.e. if m != INF and m != -INF and
*m* is not a NaN.

.. us.params

**Parameters**

.. uparam:: m

   is a real scalar or real matrix.

.. us.example

**Example**

::

   1/0
       1.#INF
   0/0
       -1.#IND
   isfinite(1/0)
       0.0000
   isfinite(0/0)
       0.0000
   isnan(1/0)
       0.0000
   isnan(0/0)
       1.0000
   isnan(0/0)
       1.0000
   isnan(1e300*1e300)
       1.0000
   isnan(-1e300*-1e300)
       1.0000

.. us.history

**History**

.. list-table::
   :header-rows: 1

   * - Version
     - Description
   * - 5.9.3
     - New.

.. seealso::
   :ref:`overview-mathematic`,
   :ref:`isnan`

:sub:`id-1417454`