<?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: Pressure.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 pressure conversions

 *

 * @category   Zend

 * @package    Zend_Measure

 * @subpackage Zend_Measure_Pressure

 * @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_Pressure extends Zend_Measure_Abstract

{

    const STANDARD = 'NEWTON_PER_SQUARE_METER';

    const ATMOSPHERE                           = 'ATMOSPHERE';

    const ATMOSPHERE_TECHNICAL                 = 'ATMOSPHERE_TECHNICAL';

    const ATTOBAR                              = 'ATTOBAR';

    const ATTOPASCAL                           = 'ATTOPASCAL';

    const BAR                                  = 'BAR';

    const BARAD                                = 'BARAD';

    const BARYE                                = 'BARYE';

    const CENTIBAR                             = 'CENTIBAR';

    const CENTIHG                              = 'CENTIHG';

    const CENTIMETER_MERCURY_0C                = 'CENTIMETER_MERCURY_0C';

    const CENTIMETER_WATER_4C                  = 'CENTIMETER_WATER_4C';

    const CENTIPASCAL                          = 'CENTIPASCAL';

    const CENTITORR                            = 'CENTITORR';

    const DECIBAR                              = 'DECIBAR';

    const DECIPASCAL                           = 'DECIPASCAL';

    const DECITORR                             = 'DECITORR';

    const DEKABAR                              = 'DEKABAR';

    const DEKAPASCAL                           = 'DEKAPASCAL';

    const DYNE_PER_SQUARE_CENTIMETER           = 'DYNE_PER_SQUARE_CENTIMETER';

    const EXABAR                               = 'EXABAR';

    const EXAPASCAL                            = 'EXAPASCAL';

    const FEMTOBAR                             = 'FEMTOBAR';

    const FEMTOPASCAL                          = 'FEMTOPASCAL';

    const FOOT_AIR_0C                          = 'FOOT_AIR_0C';

    const FOOT_AIR_15C                         = 'FOOT_AIR_15C';

    const FOOT_HEAD                            = 'FOOT_HEAD';

    const FOOT_MERCURY_0C                      = 'FOOT_MERCURY_0C';

    const FOOT_WATER_4C                        = 'FOOT_WATER_4C';

    const GIGABAR                              = 'GIGABAR';

    const GIGAPASCAL                           = 'GIGAPASCAL';

    const GRAM_FORCE_SQUARE_CENTIMETER         = 'GRAM_FORCE_SQUARE_CENTIMETER';

    const HECTOBAR                             = 'HECTOBAR';

    const HECTOPASCAL                          = 'HECTOPASCAL';

    const INCH_AIR_0C                          = 'INCH_AIR_0C';

    const INCH_AIR_15C                         = 'INCH_AIR_15C';

    const INCH_MERCURY_0C                      = 'INCH_MERCURY_0C';

    const INCH_WATER_4C                        = 'INCH_WATER_4C';

    const KILOBAR                              = 'KILOBAR';

    const KILOGRAM_FORCE_PER_SQUARE_CENTIMETER = 'KILOGRAM_FORCE_PER_SQUARE_CENTIMETER';

    const KILOGRAM_FORCE_PER_SQUARE_METER      = 'KILOGRAM_FORCE_PER_SQUARE_METER';

    const KILOGRAM_FORCE_PER_SQUARE_MILLIMETER = 'KILOGRAM_FORCE_PER_SQUARE_MILLIMETER';

    const KILONEWTON_PER_SQUARE_METER          = 'KILONEWTON_PER_SQUARE_METER';

    const KILOPASCAL                           = 'KILOPASCAL';

    const KILOPOND_PER_SQUARE_CENTIMETER       = 'KILOPOND_PER_SQUARE_CENTIMETER';

    const KILOPOND_PER_SQUARE_METER            = 'KILOPOND_PER_SQUARE_METER';

    const KILOPOND_PER_SQUARE_MILLIMETER       = 'KILOPOND_PER_SQUARE_MILLIMETER';

    const KIP_PER_SQUARE_FOOT                  = 'KIP_PER_SQUARE_FOOT';

    const KIP_PER_SQUARE_INCH                  = 'KIP_PER_SQUARE_INCH';

    const MEGABAR                              = 'MEGABAR';

    const MEGANEWTON_PER_SQUARE_METER          = 'MEGANEWTON_PER_SQUARE_METER';

    const MEGAPASCAL                           = 'MEGAPASCAL';

    const METER_AIR_0C                         = 'METER_AIR_0C';

    const METER_AIR_15C                        = 'METER_AIR_15C';

    const METER_HEAD                           = 'METER_HEAD';

    const MICROBAR                             = 'MICROBAR';

    const MICROMETER_MERCURY_0C                = 'MICROMETER_MERCURY_0C';

    const MICROMETER_WATER_4C                  = 'MICROMETER_WATER_4C';

    const MICRON_MERCURY_0C                    = 'MICRON_MERCURY_0C';

    const MICROPASCAL                          = 'MICROPASCAL';

    const MILLIBAR                             = 'MILLIBAR';

    const MILLIHG                              = 'MILLIHG';

    const MILLIMETER_MERCURY_0C                = 'MILLIMETER_MERCURY_0C';

    const MILLIMETER_WATER_4C                  = 'MILLIMETER_WATER_4C';

    const MILLIPASCAL                          = 'MILLIPASCAL';

    const MILLITORR                            = 'MILLITORR';

    const NANOBAR                              = 'NANOBAR';

    const NANOPASCAL                           = 'NANOPASCAL';

    const NEWTON_PER_SQUARE_METER              = 'NEWTON_PER_SQUARE_METER';

    const NEWTON_PER_SQUARE_MILLIMETER         = 'NEWTON_PER_SQUARE_MILLIMETER';

    const OUNCE_PER_SQUARE_INCH                = 'OUNCE_PER_SQUARE_INCH';

    const PASCAL                               = 'PASCAL';

    const PETABAR                              = 'PETABAR';

    const PETAPASCAL                           = 'PETAPASCAL';

    const PICOBAR                              = 'PICOBAR';

    const PICOPASCAL                           = 'PICOPASCAL';

    const PIEZE                                = 'PIEZE';

    const POUND_PER_SQUARE_FOOT                = 'POUND_PER_SQUARE_FOOT';

    const POUND_PER_SQUARE_INCH                = 'POUND_PER_SQUARE_INCH';

    const POUNDAL_PER_SQUARE_FOOT              = 'POUNDAL_PER_SQUARE_FOOT';

    const STHENE_PER_SQUARE_METER              = 'STHENE_PER_SQUARE_METER';

    const TECHNICAL_ATMOSPHERE                 = 'TECHNICAL_ATMOSPHERE';

    const TERABAR                              = 'TERABAR';

    const TERAPASCAL                           = 'TERAPASCAL';

    const TON_PER_SQUARE_FOOT                  = 'TON_PER_SQUARE_FOOT';

    const TON_PER_SQUARE_FOOT_SHORT            = 'TON_PER_SQUARE_FOOT_SHORT';

    const TON_PER_SQUARE_INCH                  = 'TON_PER_SQUARE_INCH';

    const TON_PER_SQUARE_INCH_SHORT            = 'TON_PER_SQUARE_INCH_SHORT';

    const TON_PER_SQUARE_METER                 = 'TON_PER_SQUARE_METER';

    const TORR                                 = 'TORR';

    const WATER_COLUMN_CENTIMETER              = 'WATER_COLUMN_CENTIMETER';

    const WATER_COLUMN_INCH                    = 'WATER_COLUMN_INCH';

    const WATER_COLUMN_MILLIMETER              = 'WATER_COLUMN_MILLIMETER';

    const YOCTOBAR                             = 'YOCTOBAR';

    const YOCTOPASCAL                          = 'YOCTOPASCAL';

    const YOTTABAR                             = 'YOTTABAR';

    const YOTTAPASCAL                          = 'YOTTAPASCAL';

    const ZEPTOBAR                             = 'ZEPTOBAR';

    const ZEPTOPASCAL                          = 'ZEPTOPASCAL';

    const ZETTABAR                             = 'ZETTABAR';

    const ZETTAPASCAL                          = 'ZETTAPASCAL';

    /**

     * Calculations for all pressure units

     *

     * @var array

     */

    protected $_units = array(

        'ATMOSPHERE'            => array('101325.01', 'atm'),

        'ATMOSPHERE_TECHNICAL'  => array('98066.5',   'atm'),

        'ATTOBAR'               => array('1.0e-13',   'ab'),

        'ATTOPASCAL'            => array('1.0e-18',   'aPa'),

        'BAR'                   => array('100000',    'b'),

        'BARAD'                 => array('0.1',       'barad'),

        'BARYE'                 => array('0.1',       'ba'),

        'CENTIBAR'              => array('1000',      'cb'),

        'CENTIHG'               => array('1333.2239', 'cHg'),

        'CENTIMETER_MERCURY_0C' => array('1333.2239', 'cm mercury (0°C)'),

        'CENTIMETER_WATER_4C'   => array('98.0665',   'cm water (4°C)'),

        'CENTIPASCAL'           => array('0.01',      'cPa'),

        'CENTITORR'             => array('1.3332237', 'cTorr'),

        'DECIBAR'               => array('10000',     'db'),

        'DECIPASCAL'            => array('0.1',       'dPa'),

        'DECITORR'              => array('13.332237', 'dTorr'),

        'DEKABAR'               => array('1000000',   'dab'),

        'DEKAPASCAL'            => array('10',        'daPa'),

        'DYNE_PER_SQUARE_CENTIMETER' => array('0.1',  'dyn/cm²'),

        'EXABAR'                => array('1.0e+23',   'Eb'),

        'EXAPASCAL'             => array('1.0e+18',   'EPa'),

        'FEMTOBAR'              => array('1.0e-10',   'fb'),

        'FEMTOPASCAL'           => array('1.0e-15',   'fPa'),

        'FOOT_AIR_0C'           => array('3.8640888', 'ft air (0°C)'),

        'FOOT_AIR_15C'          => array('3.6622931', 'ft air (15°C)'),

        'FOOT_HEAD'             => array('2989.0669', 'ft head'),

        'FOOT_MERCURY_0C'       => array('40636.664', 'ft mercury (0°C)'),

        'FOOT_WATER_4C'         => array('2989.0669', 'ft water (4°C)'),

        'GIGABAR'               => array('1.0e+14',   'Gb'),

        'GIGAPASCAL'            => array('1.0e+9',    'GPa'),

        'GRAM_FORCE_SQUARE_CENTIMETER' => array('98.0665', 'gf'),

        'HECTOBAR'              => array('1.0e+7',    'hb'),

        'HECTOPASCAL'           => array('100',       'hPa'),

        'INCH_AIR_0C'           => array(array('' => '3.8640888', '/' => '12'), 'in air (0°C)'),

        'INCH_AIR_15C'          => array(array('' => '3.6622931', '/' => '12'), 'in air (15°C)'),

        'INCH_MERCURY_0C'       => array(array('' => '40636.664', '/' => '12'), 'in mercury (0°C)'),

        'INCH_WATER_4C'         => array(array('' => '2989.0669', '/' => '12'), 'in water (4°C)'),

        'KILOBAR'               => array('1.0e+8',    'kb'),

        'KILOGRAM_FORCE_PER_SQUARE_CENTIMETER' => array('98066.5', 'kgf/cm²'),

        'KILOGRAM_FORCE_PER_SQUARE_METER'      => array('9.80665', 'kgf/m²'),

        'KILOGRAM_FORCE_PER_SQUARE_MILLIMETER' => array('9806650', 'kgf/mm²'),

        'KILONEWTON_PER_SQUARE_METER'          => array('1000',    'kN/m²'),

        'KILOPASCAL'            => array('1000',      'kPa'),

        'KILOPOND_PER_SQUARE_CENTIMETER' => array('98066.5', 'kp/cm²'),

        'KILOPOND_PER_SQUARE_METER'      => array('9.80665', 'kp/m²'),

        'KILOPOND_PER_SQUARE_MILLIMETER' => array('9806650', 'kp/mm²'),

        'KIP_PER_SQUARE_FOOT'   => array(array('' => '430.92233', '/' => '0.009'),   'kip/ft²'),

        'KIP_PER_SQUARE_INCH'   => array(array('' => '62052.81552', '/' => '0.009'), 'kip/in²'),

        'MEGABAR'               => array('1.0e+11',    'Mb'),

        'MEGANEWTON_PER_SQUARE_METER' => array('1000000', 'MN/m²'),

        'MEGAPASCAL'            => array('1000000',    'MPa'),

        'METER_AIR_0C'          => array('12.677457',  'm air (0°C)'),

        'METER_AIR_15C'         => array('12.015397',  'm air (15°C)'),

        'METER_HEAD'            => array('9804.139432', 'm head'),

        'MICROBAR'              => array('0.1',        'µb'),

        'MICROMETER_MERCURY_0C' => array('0.13332239', 'µm mercury (0°C)'),

        'MICROMETER_WATER_4C'   => array('0.00980665', 'µm water (4°C)'),

        'MICRON_MERCURY_0C'     => array('0.13332239', 'µ mercury (0°C)'),

        'MICROPASCAL'           => array('0.000001',   'µPa'),

        'MILLIBAR'              => array('100',        'mb'),

        'MILLIHG'               => array('133.32239',  'mHg'),

        'MILLIMETER_MERCURY_0C' => array('133.32239',  'mm mercury (0°C)'),

        'MILLIMETER_WATER_4C'   => array('9.80665',    'mm water (0°C)'),

        'MILLIPASCAL'           => array('0.001',      'mPa'),

        'MILLITORR'             => array('0.13332237', 'mTorr'),

        'NANOBAR'               => array('0.0001',     'nb'),

        'NANOPASCAL'            => array('1.0e-9',     'nPa'),

        'NEWTON_PER_SQUARE_METER'      => array('1',   'N/m²'),

        'NEWTON_PER_SQUARE_MILLIMETER' => array('1000000',   'N/mm²'),

        'OUNCE_PER_SQUARE_INCH'        => array('430.92233', 'oz/in²'),

        'PASCAL'                => array('1',          'Pa'),

        'PETABAR'               => array('1.0e+20',    'Pb'),

        'PETAPASCAL'            => array('1.0e+15',    'PPa'),

        'PICOBAR'               => array('0.0000001',  'pb'),

        'PICOPASCAL'            => array('1.0e-12',    'pPa'),

        'PIEZE'                 => array('1000',       'pz'),

        'POUND_PER_SQUARE_FOOT' => array(array('' => '430.92233', '/' => '9'), 'lb/ft²'),

        'POUND_PER_SQUARE_INCH' => array('6894.75728', 'lb/in²'),

        'POUNDAL_PER_SQUARE_FOOT' => array('1.4881639', 'pdl/ft²'),

        'STHENE_PER_SQUARE_METER' => array('1000',     'sn/m²'),

        'TECHNICAL_ATMOSPHERE'  => array('98066.5',    'at'),

        'TERABAR'               => array('1.0e+17',    'Tb'),

        'TERAPASCAL'            => array('1.0e+12',    'TPa'),

        'TON_PER_SQUARE_FOOT'   => array(array('' => '120658.2524', '/' => '1.125'),      't/ft²'),

        'TON_PER_SQUARE_FOOT_SHORT' => array(array('' => '430.92233', '/' => '0.0045'),   't/ft²'),

        'TON_PER_SQUARE_INCH'   => array(array('' => '17374788.3456', '/' => '1.125'),    't/in²'),

        'TON_PER_SQUARE_INCH_SHORT' => array(array('' => '62052.81552', '/' => '0.0045'), 't/in²'),

        'TON_PER_SQUARE_METER'  => array('9806.65',    't/m²'),

        'TORR'                  => array('133.32237',  'Torr'),

        'WATER_COLUMN_CENTIMETER' => array('98.0665',  'WC (cm)'),

        'WATER_COLUMN_INCH'       => array(array('' => '2989.0669', '/' => '12'), 'WC (in)'),

        'WATER_COLUMN_MILLIMETER' => array('9.80665',  'WC (mm)'),

        'YOCTOBAR'              => array('1.0e-19',    'yb'),

        'YOCTOPASCAL'           => array('1.0e-24',    'yPa'),

        'YOTTABAR'              => array('1.0e+29',    'Yb'),

        'YOTTAPASCAL'           => array('1.0e+24',    'YPa'),

        'ZEPTOBAR'              => array('1.0e-16',    'zb'),

        'ZEPTOPASCAL'           => array('1.0e-21',    'zPa'),

        'ZETTABAR'              => array('1.0e+26',    'Zb'),

        'ZETTAPASCAL'           => array('1.0e+21',    'ZPa'),

        'STANDARD'              => 'NEWTON_PER_SQUARE_METER'

    );

}