.. highlightlang:: us

.. _prod:

prod
====

.. index:: prod

.. us.tag  prod NOTREADYENGLISH

:ref:`prod` calculates the product of all elements for
real or complex vectors. If the argument is a matrix, a row vector
will be created that contains the product of the matrix columns.

.. function::  mProd = prod(m)

.. us.return

**Return Value**

*mProd* is a scalar it *m* is vector. If *m* is a matrix
it is a row vector.

.. us.params

**Parameters**

.. uparam:: m

   *m* is a real or complex matrix.

.. us.example

**Example**

::

   * m = int(rand(3,3) * 10) + 1
   * m
       1.0000     3.0000     8.0000
       8.0000     1.0000     4.0000
       4.0000     2.0000     8.0000
   * prod(m)
      32.0000     6.0000   256.0000
   * prod(prod(m))
   49152.0000

.. seealso::
   :ref:`sum`

:sub:`id-33035`