<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category  Zend

 * @package   Zend_Measure

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license   http://framework.zend.com/license/new-bsd     New BSD License

 * @version   $Id: Frequency.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/**

 * Implement needed classes

 */

require_once 'Zend/Measure/Abstract.php';

require_once 'Zend/Locale.php';

/**

 * Class for handling flow volume conversions

 *

 * @category   Zend

 * @package    Zend_Measure

 * @subpackage Zend_Measure_Frequency

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Measure_Frequency extends Zend_Measure_Abstract

{

    const STANDARD = 'HERTZ';

    const ONE_PER_SECOND        = 'ONE_PER_SECOND';

    const CYCLE_PER_SECOND      = 'CYCLE_PER_SECOND';

    const DEGREE_PER_HOUR       = 'DEGREE_PER_HOUR';

    const DEGREE_PER_MINUTE     = 'DEGREE_PER_MINUTE';

    const DEGREE_PER_SECOND     = 'DEGREE_PER_SECOND';

    const GIGAHERTZ             = 'GIGAHERTZ';

    const HERTZ                 = 'HERTZ';

    const KILOHERTZ             = 'KILOHERTZ';

    const MEGAHERTZ             = 'MEGAHERTZ';

    const MILLIHERTZ            = 'MILLIHERTZ';

    const RADIAN_PER_HOUR       = 'RADIAN_PER_HOUR';

    const RADIAN_PER_MINUTE     = 'RADIAN_PER_MINUTE';

    const RADIAN_PER_SECOND     = 'RADIAN_PER_SECOND';

    const REVOLUTION_PER_HOUR   = 'REVOLUTION_PER_HOUR';

    const REVOLUTION_PER_MINUTE = 'REVOLUTION_PER_MINUTE';

    const REVOLUTION_PER_SECOND = 'REVOLUTION_PER_SECOND';

    const RPM                   = 'RPM';

    const TERRAHERTZ            = 'TERRAHERTZ';

    /**

     * Calculations for all frequency units

     *

     * @var array

     */

    protected $_units = array(

        'ONE_PER_SECOND'        => array('1',             '1/s'),

        'CYCLE_PER_SECOND'      => array('1',             'cps'),

        'DEGREE_PER_HOUR'       => array(array('' => '1', '/' => '1296000'), '°/h'),

        'DEGREE_PER_MINUTE'     => array(array('' => '1', '/' => '21600'),   '°/m'),

        'DEGREE_PER_SECOND'     => array(array('' => '1', '/' => '360'),     '°/s'),

        'GIGAHERTZ'             => array('1000000000',    'GHz'),

        'HERTZ'                 => array('1',             'Hz'),

        'KILOHERTZ'             => array('1000',          'kHz'),

        'MEGAHERTZ'             => array('1000000',       'MHz'),

        'MILLIHERTZ'            => array('0.001',         'mHz'),

        'RADIAN_PER_HOUR'       => array(array('' => '1', '/' => '22619.467'), 'rad/h'),

        'RADIAN_PER_MINUTE'     => array(array('' => '1', '/' => '376.99112'), 'rad/m'),

        'RADIAN_PER_SECOND'     => array(array('' => '1', '/' => '6.2831853'), 'rad/s'),

        'REVOLUTION_PER_HOUR'   => array(array('' => '1', '/' => '3600'), 'rph'),

        'REVOLUTION_PER_MINUTE' => array(array('' => '1', '/' => '60'),   'rpm'),

        'REVOLUTION_PER_SECOND' => array('1',             'rps'),

        'RPM'                   => array(array('' => '1', '/' => '60'), 'rpm'),

        'TERRAHERTZ'            => array('1000000000000', 'THz'),

        'STANDARD'              =>'HERTZ'

    );

}