<?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: Weight.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 weight conversions

 *

 * @category   Zend

 * @package    Zend_Measure

 * @subpackage Zend_Measure_Weigth

 * @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_Weight extends Zend_Measure_Abstract

{

    const STANDARD = 'KILOGRAM';

    const ARRATEL                 = 'ARRATEL';

    const ARTEL                   = 'ARTEL';

    const ARROBA_PORTUGUESE       = 'ARROBA_PORTUGUESE';

    const ARROBA                  = 'ARROBA';

    const AS_                     = 'AS_';

    const ASS                     = 'ASS';

    const ATOMIC_MASS_UNIT_1960   = 'ATOMIC_MASS_UNIT_1960';

    const ATOMIC_MASS_UNIT_1973   = 'ATOMIC_MASS_UNIT_1973';

    const ATOMIC_MASS_UNIT_1986   = 'ATOMIC_MASS_UNIT_1986';

    const ATOMIC_MASS_UNIT        = 'ATOMIC_MASS_UNIT';

    const AVOGRAM                 = 'AVOGRAM';

    const BAG                     = 'BAG';

    const BAHT                    = 'BAHT';

    const BALE                    = 'BALE';

    const BALE_US                 = 'BALE_US';

    const BISMAR_POUND            = 'BISMAR_POUND';

    const CANDY                   = 'CANDY';

    const CARAT_INTERNATIONAL     = 'CARAT_INTERNATIONAL';

    const CARAT                   = 'CARAT';

    const CARAT_UK                = 'CARAT_UK';

    const CARAT_US_1913           = 'CARAT_US_1913';

    const CARGA                   = 'CARGA';

    const CATTI                   = 'CATTI';

    const CATTI_JAPANESE          = 'CATTI_JAPANESE';

    const CATTY                   = 'CATTY';

    const CATTY_JAPANESE          = 'CATTY_JAPANESE';

    const CATTY_THAI              = 'CATTY_THAI';

    const CENTAL                  = 'CENTAL';

    const CENTIGRAM               = 'CENTIGRAM';

    const CENTNER                 = 'CENTNER';

    const CENTNER_RUSSIAN         = 'CENTNER_RUSSIAN';

    const CHALDER                 = 'CHALDER';

    const CHALDRON                = 'CHALDRON';

    const CHIN                    = 'CHIN';

    const CHIN_JAPANESE           = 'CHIN_JAPANESE';

    const CLOVE                   = 'CLOVE';

    const CRITH                   = 'CRITH';

    const DALTON                  = 'DALTON';

    const DAN                     = 'DAN';

    const DAN_JAPANESE            = 'DAN_JAPANESE';

    const DECIGRAM                = 'DECIGRAM';

    const DECITONNE               = 'DECITONNE';

    const DEKAGRAM                = 'DEKAGRAM';

    const DEKATONNE               = 'DEKATONNE';

    const DENARO                  = 'DENARO';

    const DENIER                  = 'DENIER';

    const DRACHME                 = 'DRACHME';

    const DRAM                    = 'DRAM';

    const DRAM_APOTHECARIES       = 'DRAM_APOTHECARIES';

    const DYNE                    = 'DYNE';

    const ELECTRON                = 'ELECTRON';

    const ELECTRONVOLT            = 'ELECTRONVOLT';

    const ETTO                    = 'ETTO';

    const EXAGRAM                 = 'EXAGRAM';

    const FEMTOGRAM               = 'FEMTOGRAM';

    const FIRKIN                  = 'FIRKIN';

    const FLASK                   = 'FLASK';

    const FOTHER                  = 'FOTHER';

    const FOTMAL                  = 'FOTMAL';

    const FUNT                    = 'FUNT';

    const FUNTE                   = 'FUNTE';

    const GAMMA                   = 'GAMMA';

    const GIGAELECTRONVOLT        = 'GIGAELECTRONVOLT';

    const GIGAGRAM                = 'GIGAGRAM';

    const GIGATONNE               = 'GIGATONNE';

    const GIN                     = 'GIN';

    const GIN_JAPANESE            = 'GIN_JAPANESE';

    const GRAIN                   = 'GRAIN';

    const GRAM                    = 'GRAM';

    const GRAN                    = 'GRAN';

    const GRANO                   = 'GRANO';

    const GRANI                   = 'GRANI';

    const GROS                    = 'GROS';

    const HECTOGRAM               = 'HECTOGRAM';

    const HUNDRETWEIGHT           = 'HUNDRETWEIGHT';

    const HUNDRETWEIGHT_US        = 'HUNDRETWEIGHT_US';

    const HYL                     = 'HYL';

    const JIN                     = 'JIN';

    const JUPITER                 = 'JUPITER';

    const KATI                    = 'KATI';

    const KATI_JAPANESE           = 'KATI_JAPANESE';

    const KEEL                    = 'KEEL';

    const KEG                     = 'KEG';

    const KILODALTON              = 'KILODALTON';

    const KILOGRAM                = 'KILOGRAM';

    const KILOGRAM_FORCE          = 'KILOGRAM_FORCE';

    const KILOTON                 = 'KILOTON';

    const KILOTON_US              = 'KILOTON_US';

    const KILOTONNE               = 'KILOTONNE';

    const KIN                     = 'KIN';

    const KIP                     = 'KIP';

    const KOYAN                   = 'KOYAN';

    const KWAN                    = 'KWAN';

    const LAST_GERMANY            = 'LAST_GERMANY';

    const LAST                    = 'LAST';

    const LAST_WOOL               = 'LAST_WOOL';

    const LB                      = 'LB';

    const LBS                     = 'LBS';

    const LIANG                   = 'LIANG';

    const LIBRA_ITALIAN           = 'LIBRE_ITALIAN';

    const LIBRA_SPANISH           = 'LIBRA_SPANISH';

    const LIBRA_PORTUGUESE        = 'LIBRA_PORTUGUESE';

    const LIBRA_ANCIENT           = 'LIBRA_ANCIENT';

    const LIBRA                   = 'LIBRA';

    const LIVRE                   = 'LIVRE';

    const LONG_TON                = 'LONG_TON';

    const LOT                     = 'LOT';

    const MACE                    = 'MACE';

    const MAHND                   = 'MAHND';

    const MARC                    = 'MARC';

    const MARCO                   = 'MARCO';

    const MARK                    = 'MARK';

    const MARK_GERMAN             = 'MARK_GERMANY';

    const MAUND                   = 'MAUND';

    const MAUND_PAKISTAN          = 'MAUND_PAKISTAN';

    const MEGADALTON              = 'MEGADALTON';

    const MEGAGRAM                = 'MEGAGRAM';

    const MEGATONNE               = 'MEGATONNE';

    const MERCANTILE_POUND        = 'MERCANTILE_POUND';

    const METRIC_TON              = 'METRIC_TON';

    const MIC                     = 'MIC';

    const MICROGRAM               = 'MICROGRAM';

    const MILLIDALTON             = 'MILLIDALTON';

    const MILLIER                 = 'MILLIER';

    const MILLIGRAM               = 'MILLIGRAM';

    const MILLIMASS_UNIT          = 'MILLIMASS_UNIT';

    const MINA                    = 'MINA';

    const MOMME                   = 'MOMME';

    const MYRIAGRAM               = 'MYRIAGRAM';

    const NANOGRAM                = 'NANOGRAM';

    const NEWTON                  = 'NEWTON';

    const OBOL                    = 'OBOL';

    const OBOLOS                  = 'OBOLOS';

    const OBOLUS                  = 'OBOLUS';

    const OBOLOS_ANCIENT          = 'OBOLOS_ANCIENT';

    const OBOLUS_ANCIENT          = 'OBOLUS_ANCIENT';

    const OKA                     = 'OKA';

    const ONCA                    = 'ONCA';

    const ONCE                    = 'ONCE';

    const ONCIA                   = 'ONCIA';

    const ONZA                    = 'ONZA';

    const ONS                     = 'ONS';

    const OUNCE                   = 'OUNCE';

    const OUNCE_FORCE             = 'OUNCE_FORCE';

    const OUNCE_TROY              = 'OUNCE_TROY';

    const PACKEN                  = 'PACKEN';

    const PENNYWEIGHT             = 'PENNYWEIGHT';

    const PETAGRAM                = 'PETAGRAM';

    const PFUND                   = 'PFUND';

    const PICOGRAM                = 'PICOGRAM';

    const POINT                   = 'POINT';

    const POND                    = 'POND';

    const POUND                   = 'POUND';

    const POUND_FORCE             = 'POUND_FORCE';

    const POUND_METRIC            = 'POUND_METRIC';

    const POUND_TROY              = 'POUND_TROY';

    const PUD                     = 'PUD';

    const POOD                    = 'POOD';

    const PUND                    = 'PUND';

    const QIAN                    = 'QIAN';

    const QINTAR                  = 'QINTAR';

    const QUARTER                 = 'QUARTER';

    const QUARTER_US              = 'QUARTER_US';

    const QUARTER_TON             = 'QUARTER_TON';

    const QUARTERN                = 'QUARTERN';

    const QUARTERN_LOAF           = 'QUARTERN_LOAF';

    const QUINTAL_FRENCH          = 'QUINTAL_FRENCH';

    const QUINTAL                 = 'QUINTAL';

    const QUINTAL_PORTUGUESE      = 'QUINTAL_PORTUGUESE';

    const QUINTAL_SPAIN           = 'QUINTAL_SPAIN';

    const REBAH                   = 'REBAH';

    const ROTL                    = 'ROTL';

    const ROTEL                   = 'ROTEL';

    const ROTTLE                  = 'ROTTLE';

    const RATEL                   = 'RATEL';

    const SACK                    = 'SACK';

    const SCRUPLE                 = 'SCRUPLE';

    const SEER                    = 'SEER';

    const SEER_PAKISTAN           = 'SEER_PAKISTAN';

    const SHEKEL                  = 'SHEKEL';

    const SHORT_TON               = 'SHORT_TON';

    const SLINCH                  = 'SLINCH';

    const SLUG                    = 'SLUG';

    const STONE                   = 'STONE';

    const TAEL                    = 'TAEL';

    const TAHIL_JAPANESE          = 'TAHIL_JAPANESE';

    const TAHIL                   = 'TAHIL';

    const TALENT                  = 'TALENT';

    const TAN                     = 'TAN';

    const TECHNISCHE_MASS_EINHEIT = 'TECHNISCHE_MASS_EINHEIT';

    const TERAGRAM                = 'TERAGRAM';

    const TETRADRACHM             = 'TETRADRACHM';

    const TICAL                   = 'TICAL';

    const TOD                     = 'TOD';

    const TOLA                    = 'TOLA';

    const TOLA_PAKISTAN           = 'TOLA_PAKISTAN';

    const TON_UK                  = 'TON_UK';

    const TON                     = 'TON';

    const TON_US                  = 'TON_US';

    const TONELADA_PORTUGUESE     = 'TONELADA_PORTUGUESE';

    const TONELADA                = 'TONELADA';

    const TONNE                   = 'TONNE';

    const TONNEAU                 = 'TONNEAU';

    const TOVAR                   = 'TOVAR';

    const TROY_OUNCE              = 'TROY_OUNCE';

    const TROY_POUND              = 'TROY_POUND';

    const TRUSS                   = 'TRUSS';

    const UNCIA                   = 'UNCIA';

    const UNZE                    = 'UNZE';

    const VAGON                   = 'VAGON';

    const YOCTOGRAM               = 'YOCTOGRAM';

    const YOTTAGRAM               = 'YOTTAGRAM';

    const ZENTNER                 = 'ZENTNER';

    const ZEPTOGRAM               = 'ZEPTOGRAM';

    const ZETTAGRAM               = 'ZETTAGRAM';

    /**

     * Calculations for all weight units

     *

     * @var array

     */

    protected $_units = array(

        'ARRATEL'               => array('0.5',            'arratel'),

        'ARTEL'                 => array('0.5',            'artel'),

        'ARROBA_PORTUGUESE'     => array('14.69',          'arroba'),

        'ARROBA'                => array('11.502',         '@'),

        'AS_'                   => array('0.000052',       'as'),

        'ASS'                   => array('0.000052',       'ass'),

        'ATOMIC_MASS_UNIT_1960' => array('1.6603145e-27',  'amu'),

        'ATOMIC_MASS_UNIT_1973' => array('1.6605655e-27',  'amu'),

        'ATOMIC_MASS_UNIT_1986' => array('1.6605402e-27',  'amu'),

        'ATOMIC_MASS_UNIT'      => array('1.66053873e-27', 'amu'),

        'AVOGRAM'               => array('1.6605402e-27',  'avogram'),

        'BAG'                   => array('42.63768278',    'bag'),

        'BAHT'                  => array('0.015',          'baht'),

        'BALE'                  => array('326.5865064',    'bl'),

        'BALE_US'               => array('217.7243376',    'bl'),

        'BISMAR_POUND'          => array('5.993',          'bismar pound'),

        'CANDY'                 => array('254',            'candy'),

        'CARAT_INTERNATIONAL'   => array('0.0002',         'ct'),

        'CARAT'                 => array('0.0002',         'ct'),

        'CARAT_UK'              => array('0.00025919564',  'ct'),

        'CARAT_US_1913'         => array('0.0002053',      'ct'),

        'CARGA'                 => array('140',            'carga'),

        'CATTI'                 => array('0.604875',       'catti'),

        'CATTI_JAPANESE'        => array('0.594',          'catti'),

        'CATTY'                 => array('0.5',            'catty'),

        'CATTY_JAPANESE'        => array('0.6',            'catty'),

        'CATTY_THAI'            => array('0.6',            'catty'),

        'CENTAL'                => array('45.359237',      'cH'),

        'CENTIGRAM'             => array('0.00001',        'cg'),

        'CENTNER'               => array('50',             'centner'),

        'CENTNER_RUSSIAN'       => array('100',            'centner'),

        'CHALDER'               => array('2692.52',        'chd'),

        'CHALDRON'              => array('2692.52',        'chd'),

        'CHIN'                  => array('0.5',            'chin'),

        'CHIN_JAPANESE'         => array('0.6',            'chin'),

        'CLOVE'                 => array('3.175',          'clove'),

        'CRITH'                 => array('0.000089885',    'crith'),

        'DALTON'                => array('1.6605402e-27',  'D'),

        'DAN'                   => array('50',             'dan'),

        'DAN_JAPANESE'          => array('60',             'dan'),

        'DECIGRAM'              => array('0.0001',         'dg'),

        'DECITONNE'             => array('100',            'dt'),

        'DEKAGRAM'              => array('0.01',           'dag'),

        'DEKATONNE'             => array('10000',          'dat'),

        'DENARO'                => array('0.0011',         'denaro'),

        'DENIER'                => array('0.001275',       'denier'),

        'DRACHME'               => array('0.0038',         'drachme'),

        'DRAM'                  => array(array('' => '0.45359237', '/' => '256'), 'dr'),

        'DRAM_APOTHECARIES'     => array('0.0038879346',   'dr'),

        'DYNE'                  => array('1.0197162e-6',   'dyn'),

        'ELECTRON'              => array('9.109382e-31',   'e−'),

        'ELECTRONVOLT'          => array('1.782662e-36',   'eV'),

        'ETTO'                  => array('0.1',            'hg'),

        'EXAGRAM'               => array('1.0e+15',        'Eg'),

        'FEMTOGRAM'             => array('1.0e-18',        'fg'),

        'FIRKIN'                => array('25.40117272',    'fir'),

        'FLASK'                 => array('34.7',           'flask'),

        'FOTHER'                => array('979.7595192',    'fother'),

        'FOTMAL'                => array('32.65865064',    'fotmal'),

        'FUNT'                  => array('0.4095',         'funt'),

        'FUNTE'                 => array('0.4095',         'funte'),

        'GAMMA'                 => array('0.000000001',    'gamma'),

        'GIGAELECTRONVOLT'      => array('1.782662e-27',   'GeV'),

        'GIGAGRAM'              => array('1000000',        'Gg'),

        'GIGATONNE'             => array('1.0e+12',        'Gt'),

        'GIN'                   => array('0.6',            'gin'),

        'GIN_JAPANESE'          => array('0.594',          'gin'),

        'GRAIN'                 => array('0.00006479891',  'gr'),

        'GRAM'                  => array('0.001',          'g'),

        'GRAN'                  => array('0.00082',        'gran'),

        'GRANO'                 => array('0.00004905',     'grano'),

        'GRANI'                 => array('0.00004905',     'grani'),

        'GROS'                  => array('0.003824',       'gros'),

        'HECTOGRAM'             => array('0.1',            'hg'),

        'HUNDRETWEIGHT'         => array('50.80234544',    'cwt'),

        'HUNDRETWEIGHT_US'      => array('45.359237',      'cwt'),

        'HYL'                   => array('9.80665',        'hyl'),

        'JIN'                   => array('0.5',            'jin'),

        'JUPITER'               => array('1.899e+27',      'jupiter'),

        'KATI'                  => array('0.5',            'kati'),

        'KATI_JAPANESE'         => array('0.6',            'kati'),

        'KEEL'                  => array('21540.19446656', 'keel'),

        'KEG'                   => array('45.359237',      'keg'),

        'KILODALTON'            => array('1.6605402e-24',  'kD'),

        'KILOGRAM'              => array('1',              'kg'),

        'KILOGRAM_FORCE'        => array('1',              'kgf'),

        'KILOTON'               => array('1016046.9088',   'kt'),

        'KILOTON_US'            => array('907184.74',      'kt'),

        'KILOTONNE'             => array('1000000',        'kt'),

        'KIN'                   => array('0.6',            'kin'),

        'KIP'                   => array('453.59237',      'kip'),

        'KOYAN'                 => array('2419',           'koyan'),

        'KWAN'                  => array('3.75',           'kwan'),

        'LAST_GERMANY'          => array('2000',           'last'),

        'LAST'                  => array('1814.36948',     'last'),

        'LAST_WOOL'             => array('1981.29147216',  'last'),

        'LB'                    => array('0.45359237',     'lb'),

        'LBS'                   => array('0.45359237',     'lbs'),

        'LIANG'                 => array('0.05',           'liang'),

        'LIBRE_ITALIAN'         => array('0.339',          'lb'),

        'LIBRA_SPANISH'         => array('0.459',          'lb'),

        'LIBRA_PORTUGUESE'      => array('0.459',          'lb'),

        'LIBRA_ANCIENT'         => array('0.323',          'lb'),

        'LIBRA'                 => array('1',              'lb'),

        'LIVRE'                 => array('0.4895',         'livre'),

        'LONG_TON'              => array('1016.0469088',   't'),

        'LOT'                   => array('0.015',          'lot'),

        'MACE'                  => array('0.003778',       'mace'),

        'MAHND'                 => array('0.9253284348',   'mahnd'),

        'MARC'                  => array('0.24475',        'marc'),

        'MARCO'                 => array('0.23',           'marco'),

        'MARK'                  => array('0.2268',         'mark'),

        'MARK_GERMANY'          => array('0.2805',         'mark'),

        'MAUND'                 => array('37.3242',        'maund'),

        'MAUND_PAKISTAN'        => array('40',             'maund'),

        'MEGADALTON'            => array('1.6605402e-21',  'MD'),

        'MEGAGRAM'              => array('1000',           'Mg'),

        'MEGATONNE'             => array('1.0e+9',         'Mt'),

        'MERCANTILE_POUND'      => array('0.46655',        'lb merc'),

        'METRIC_TON'            => array('1000',           't'),

        'MIC'                   => array('1.0e-9',         'mic'),

        'MICROGRAM'             => array('1.0e-9',         '�g'),

        'MILLIDALTON'           => array('1.6605402e-30',  'mD'),

        'MILLIER'               => array('1000',           'millier'),