<?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) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com)
 * @version    $Id: Power.php 3224 2007-02-05 22:08:48Z gavin $
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */


/**
 * Implement needed classes
 */
require_once 'Zend/Measure/Exception.php';
require_once 'Zend/Measure/Abstract.php';
require_once 'Zend/Locale.php';


/**
 * @category   Zend
 * @package    Zend_Measure
 * @subpackage Zend_Measure_Power
 * @copyright  Copyright (c) 2005-2007 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
{
    // Power definitions
    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';

    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'
    );
}