<?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: Power.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 power conversions

 *

 * @category   Zend

 * @package    Zend_Measure

 * @subpackage Zend_Measure_Power

 * @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_Power extends Zend_Measure_Abstract

{

    const STANDARD = 'WATT';

    const ATTOWATT                               = 'ATTOWATT';

    const BTU_PER_HOUR                           = 'BTU_PER_HOUR';

    const BTU_PER_MINUTE                         = 'BTU_PER_MINUTE';

    const BTU_PER_SECOND                         = 'BTU_PER_SECOND';

    const CALORIE_PER_HOUR                       = 'CALORIE_PER_HOUR';

    const CALORIE_PER_MINUTE                     = 'CALORIE_PER_MINUTE';

    const CALORIE_PER_SECOND                     = 'CALORIE_PER_SECOND';

    const CENTIWATT                              = 'CENTIWATT';

    const CHEVAL_VAPEUR                          = 'CHEVAL_VAPEUR';

    const CLUSEC                                 = 'CLUSEC';

    const DECIWATT                               = 'DECIWATT';

    const DEKAWATT                               = 'DEKAWATT';

    const DYNE_CENTIMETER_PER_HOUR               = 'DYNE_CENTIMETER_PER_HOUR';

    const DYNE_CENTIMETER_PER_MINUTE             = 'DYNE_CENTIMETER_PER_MINUTE';

    const DYNE_CENTIMETER_PER_SECOND             = 'DYNE_CENTIMETER_PER_SECOND';

    const ERG_PER_HOUR                           = 'ERG_PER_HOUR';

    const ERG_PER_MINUTE                         = 'ERG_PER_MINUTE';

    const ERG_PER_SECOND                         = 'ERG_PER_SECOND';

    const EXAWATT                                = 'EXAWATT';

    const FEMTOWATT                              = 'FEMTOWATT';

    const FOOT_POUND_FORCE_PER_HOUR              = 'FOOT_POUND_FORCE_PER_HOUR';

    const FOOT_POUND_FORCE_PER_MINUTE            = 'FOOT_POUND_FORCE_PER_MINUTE';

    const FOOT_POUND_FORCE_PER_SECOND            = 'FOOT_POUND_FORCE_PER_SECOND';

    const FOOT_POUNDAL_PER_HOUR                  = 'FOOT_POUNDAL_PER_HOUR';

    const FOOT_POUNDAL_PER_MINUTE                = 'FOOT_POUNDAL_PER_MINUTE';

    const FOOT_POUNDAL_PER_SECOND                = 'FOOT_POUNDAL_PER_SECOND';

    const GIGAWATT                               = 'GIGAWATT';

    const GRAM_FORCE_CENTIMETER_PER_HOUR         = 'GRAM_FORCE_CENTIMETER_PER_HOUR';

    const GRAM_FORCE_CENTIMETER_PER_MINUTE       = 'GRAM_FORCE_CENTIMETER_PER_MINUTE';

    const GRAM_FORCE_CENTIMETER_PER_SECOND       = 'GRAM_FORCE_CENTIMETER_PER_SECOND';

    const HECTOWATT                              = 'HECTOWATT';

    const HORSEPOWER_INTERNATIONAL               = 'HORSEPOWER_INTERNATIONAL';

    const HORSEPOWER_ELECTRIC                    = 'HORSEPOWER_ELECTRIC';

    const HORSEPOWER                             = 'HORSEPOWER';

    const HORSEPOWER_WATER                       = 'HORSEPOWER_WATER';

    const INCH_OUNCE_FORCE_REVOLUTION_PER_MINUTE = 'INCH_OUNCH_FORCE_REVOLUTION_PER_MINUTE';

    const JOULE_PER_HOUR                         = 'JOULE_PER_HOUR';

    const JOULE_PER_MINUTE                       = 'JOULE_PER_MINUTE';

    const JOULE_PER_SECOND                       = 'JOULE_PER_SECOND';

    const KILOCALORIE_PER_HOUR                   = 'KILOCALORIE_PER_HOUR';

    const KILOCALORIE_PER_MINUTE                 = 'KILOCALORIE_PER_MINUTE';

    const KILOCALORIE_PER_SECOND                 = 'KILOCALORIE_PER_SECOND';

    const KILOGRAM_FORCE_METER_PER_HOUR          = 'KILOGRAM_FORCE_METER_PER_HOUR';

    const KILOGRAM_FORCE_METER_PER_MINUTE        = 'KILOGRAM_FORCE_METER_PER_MINUTE';

    const KILOGRAM_FORCE_METER_PER_SECOND        = 'KILOGRAM_FORCE_METER_PER_SECOND';

    const KILOPOND_METER_PER_HOUR                = 'KILOPOND_METER_PER_HOUR';

    const KILOPOND_METER_PER_MINUTE              = 'KILOPOND_METER_PER_MINUTE';

    const KILOPOND_METER_PER_SECOND              = 'KILOPOND_METER_PER_SECOND';

    const KILOWATT                               = 'KILOWATT';

    const MEGAWATT                               = 'MEGAWATT';

    const MICROWATT                              = 'MICROWATT';

    const MILLION_BTU_PER_HOUR                   = 'MILLION_BTU_PER_HOUR';

    const MILLIWATT                              = 'MILLIWATT';

    const NANOWATT                               = 'NANOWATT';

    const NEWTON_METER_PER_HOUR                  = 'NEWTON_METER_PER_HOUR';

    const NEWTON_METER_PER_MINUTE                = 'NEWTON_METER_PER_MINUTE';

    const NEWTON_METER_PER_SECOND                = 'NEWTON_METER_PER_SECOND';

    const PETAWATT                               = 'PETAWATT';

    const PFERDESTAERKE                          = 'PFERDESTAERKE';

    const PICOWATT                               = 'PICOWATT';

    const PONCELET                               = 'PONCELET';

    const POUND_SQUARE_FOOR_PER_CUBIC_SECOND     = 'POUND_SQUARE_FOOT_PER_CUBIC_SECOND';

    const TERAWATT                               = 'TERAWATT';

    const TON_OF_REFRIGERATION                   = 'TON_OF_REFRIGERATION';

    const WATT                                   = 'WATT';

    const YOCTOWATT                              = 'YOCTOWATT';

    const YOTTAWATT                              = 'YOTTAWATT';

    const ZEPTOWATT                              = 'ZEPTOWATT';

    const ZETTAWATT                              = 'ZETTAWATT';

    /**

     * Calculations for all power units

     *

     * @var array

     */

    protected $_units = array(

        'ATTOWATT'                    => array('1.0e-18',           'aW'),

        'BTU_PER_HOUR'                => array('0.29307197',        'BTU/h'),

        'BTU_PER_MINUTE'              => array('17.5843182',        'BTU/m'),

        'BTU_PER_SECOND'              => array('1055.059092',       'BTU/s'),

        'CALORIE_PER_HOUR'            => array(array('' => '11630', '*' => '1.0e-7'),    'cal/h'),

        'CALORIE_PER_MINUTE'          => array(array('' => '697800', '*' => '1.0e-7'),   'cal/m'),

        'CALORIE_PER_SECOND'          => array(array('' => '41868000', '*' => '1.0e-7'), 'cal/s'),

        'CENTIWATT'                   => array('0.01',              'cW'),

        'CHEVAL_VAPEUR'               => array('735.49875',         'cv'),

        'CLUSEC'                      => array('0.0000013332237',   'clusec'),

        'DECIWATT'                    => array('0.1',               'dW'),

        'DEKAWATT'                    => array('10',                'daW'),

        'DYNE_CENTIMETER_PER_HOUR'    => array(array('' => '1.0e-7','/' => '3600'), 'dyn cm/h'),

        'DYNE_CENTIMETER_PER_MINUTE'  => array(array('' => '1.0e-7','/' => '60'),   'dyn cm/m'),

        'DYNE_CENTIMETER_PER_SECOND'  => array('1.0e-7',            'dyn cm/s'),

        'ERG_PER_HOUR'                => array(array('' => '1.0e-7','/' => '3600'), 'erg/h'),

        'ERG_PER_MINUTE'              => array(array('' => '1.0e-7','/' => '60'),   'erg/m'),

        'ERG_PER_SECOND'              => array('1.0e-7',            'erg/s'),

        'EXAWATT'                     => array('1.0e+18',           'EW'),

        'FEMTOWATT'                   => array('1.0e-15',           'fW'),

        'FOOT_POUND_FORCE_PER_HOUR'   => array(array('' => '1.3558179', '/' => '3600'), 'ft lb/h'),

        'FOOT_POUND_FORCE_PER_MINUTE' => array(array('' => '1.3558179', '/' => '60'),   'ft lb/m'),

        'FOOT_POUND_FORCE_PER_SECOND' => array('1.3558179',         'ft lb/s'),

        'FOOT_POUNDAL_PER_HOUR'       => array(array('' => '0.04214011','/' => '3600'), 'ft pdl/h'),

        'FOOT_POUNDAL_PER_MINUTE'     => array(array('' => '0.04214011', '/' => '60'),  'ft pdl/m'),

        'FOOT_POUNDAL_PER_SECOND'     => array('0.04214011',        'ft pdl/s'),

        'GIGAWATT'                    => array('1.0e+9',            'GW'),

        'GRAM_FORCE_CENTIMETER_PER_HOUR' => array(array('' => '0.0000980665','/' => '3600'), 'gf cm/h'),

        'GRAM_FORCE_CENTIMETER_PER_MINUTE' => array(array('' => '0.0000980665','/' => '60'), 'gf cm/m'),

        'GRAM_FORCE_CENTIMETER_PER_SECOND' => array('0.0000980665', 'gf cm/s'),

        'HECTOWATT'                   => array('100',               'hW'),

        'HORSEPOWER_INTERNATIONAL'    => array('745.69987',         'hp'),

        'HORSEPOWER_ELECTRIC'         => array('746',               'hp'),

        'HORSEPOWER'                  => array('735.49875',         'hp'),

        'HORSEPOWER_WATER'            => array('746.043',           'hp'),

        'INCH_OUNCH_FORCE_REVOLUTION_PER_MINUTE' => array('0.00073948398',    'in ocf/m'),

        'JOULE_PER_HOUR'              => array(array('' => '1', '/' => '3600'), 'J/h'),

        'JOULE_PER_MINUTE'            => array(array('' => '1', '/' => '60'),   'J/m'),

        'JOULE_PER_SECOND'            => array('1',                 'J/s'),

        'KILOCALORIE_PER_HOUR'        => array('1.163',             'kcal/h'),

        'KILOCALORIE_PER_MINUTE'      => array('69.78',             'kcal/m'),

        'KILOCALORIE_PER_SECOND'      => array('4186.8',            'kcal/s'),

        'KILOGRAM_FORCE_METER_PER_HOUR' => array(array('' => '9.80665', '/' => '3600'), 'kgf m/h'),

        'KILOGRAM_FORCE_METER_PER_MINUTE' => array(array('' => '9.80665', '/' => '60'), 'kfg m/m'),

        'KILOGRAM_FORCE_METER_PER_SECOND' => array('9.80665',       'kfg m/s'),

        'KILOPOND_METER_PER_HOUR'     => array(array('' => '9.80665', '/' => '3600'), 'kp/h'),

        'KILOPOND_METER_PER_MINUTE'   => array(array('' => '9.80665', '/' => '60'),   'kp/m'),

        'KILOPOND_METER_PER_SECOND'   => array('9.80665',           'kp/s'),

        'KILOWATT'                    => array('1000',              'kW'),

        'MEGAWATT'                    => array('1000000',           'MW'),

        'MICROWATT'                   => array('0.000001',          'µW'),

        'MILLION_BTU_PER_HOUR'        => array('293071.07',         'mio BTU/h'),

        'MILLIWATT'                   => array('0.001',             'mM'),

        'NANOWATT'                    => array('1.0e-9',            'nN'),

        'NEWTON_METER_PER_HOUR'       => array(array('' => '1', '/' => '3600'), 'Nm/h'),

        'NEWTON_METER_PER_MINUTE'     => array(array('' => '1', '/' => '60'),   'Nm/m'),

        'NEWTON_METER_PER_SECOND'     => array('1',                 'Nm/s'),

        'PETAWATT'                    => array('1.0e+15',           'PW'),

        'PFERDESTAERKE'               => array('735.49875',         'PS'),

        'PICOWATT'                    => array('1.0e-12',           'pW'),

        'PONCELET'                    => array('980.665',           'p'),

        'POUND_SQUARE_FOOT_PER_CUBIC_SECOND' => array('0.04214011', 'lb ft²/s³'),

        'TERAWATT'                    => array('1.0e+12',           'TW'),

        'TON_OF_REFRIGERATION'        => array('3516.85284',        'RT'),

        'WATT'                        => array('1',                 'W'),

        'YOCTOWATT'                   => array('1.0e-24',           'yW'),

        'YOTTAWATT'                   => array('1.0e+24',           'YW'),

        'ZEPTOWATT'                   => array('1.0e-21',           'zW'),

        'ZETTAWATT'                   => array('1.0e+21',           'ZW'),

        'STANDARD'                    => 'WATT'

    );

}