[Sommaire] [Imprimer]

   1  <?php
   2  //
   3  // Definition of eZBCMath class
   4  //
   5  // Created on: <04-Nov-2005 12:26:52 dl>
   6  //
   7  // SOFTWARE NAME: eZ publish
   8  // SOFTWARE RELEASE: 3.9.0
   9  // BUILD VERSION: 17785
  10  // COPYRIGHT NOTICE: Copyright (C) 1999-2006 eZ systems AS
  11  // SOFTWARE LICENSE: GNU General Public License v2.0
  12  // NOTICE: >
  13  //   This program is free software; you can redistribute it and/or
  14  //   modify it under the terms of version 2.0  of the GNU General
  15  //   Public License as published by the Free Software Foundation.
  16  //
  17  //   This program is distributed in the hope that it will be useful,
  18  //   but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  //   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  //   GNU General Public License for more details.
  21  //
  22  //   You should have received a copy of version 2.0 of the GNU General
  23  //   Public License along with this program; if not, write to the Free
  24  //   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  25  //   MA 02110-1301, USA.
  26  //
  27  //
  28  
  29  /*! \file ezbcmath.php
  30  */
  31  
  32  /*!
  33    \class eZBCMath ezbcmath.php
  34    \brief Handles calculation using bcmath library.
  35  */
  36  
  37  include_once ( 'lib/ezmath/classes/mathhandlers/ezphpmath.php' );
  38  
  39  define( 'EZ_BCMATH_DEFAULT_SCALE', 10 );
  40  
  41  class eZBCMath extends eZPHPMath
  42  {
  43      function eZBCMath( $params = array () )
  44      {
  45          if( isset( $params['scale'] ) && is_numeric( $params['scale'] ) )
  46              $this->setScale( $params['scale'] );
  47          else
  48              $this->setScale( EZ_BCMATH_DEFAULT_SCALE );
  49      }
  50  
  51      function scale()
  52      {
  53          return $this->Scale;
  54      }
  55  
  56      function setScale( $scale )
  57      {
  58          $this->Scale = $scale;
  59      }
  60  
  61      function add( $a, $b )
  62      {
  63          return ( bcadd( $a, $b, $this->Scale ) );
  64      }
  65  
  66      function sub( $a, $b )
  67      {
  68          return ( bcsub( $a, $b, $this->Scale ) );
  69      }
  70  
  71      function mul( $a, $b )
  72      {
  73          return ( bcmul( $a, $b, $this->Scale ) );
  74      }
  75  
  76      function div( $a, $b )
  77      {
  78          return ( bcdiv( $a, $b, $this->Scale ) );
  79      }
  80  
  81      function pow( $base, $exp )
  82      {
  83          return ( bcpow( $base, $exp, $this->Scale ) );
  84      }
  85  
  86      function ceil( $value, $precision, $target )
  87      {
  88          $result = eZPHPMath::ceil( $value, $precision, $target );
  89          $result = rtrim( $result, '0' );
  90          $result = rtrim( $result, '.' );
  91          return $result;
  92      }
  93  
  94      function floor( $value, $precision, $target )
  95      {
  96          $result = eZPHPMath::floor( $value, $precision, $target );
  97          $result = rtrim( $result, '0' );
  98          $result = rtrim( $result, '.' );
  99          return $result;
 100      }
 101  
 102      function round( $value, $precision, $target )
 103      {
 104          $result = $value;
 105          $fractPart = $this->fractval( $value, $precision + 1 );
 106          if ( strlen( $fractPart ) > $precision )
 107          {
 108              $lastDigit = (int)substr( $fractPart, -1, 1 );
 109              $fractPart = substr( $fractPart, 0, $precision );
 110              if ( $lastDigit >= 5 )
 111                  $fractPart = $this->add( $fractPart, 1 );
 112  
 113              $fractPart = $this->div( $fractPart, $this->pow( 10, $precision ) );
 114  
 115              $result = $this->add( $this->intval( $value ), $fractPart );
 116              $result = $this->adjustFractPart( $result, $precision, $target );
 117  
 118              $result = rtrim( $result, '0' );
 119              $result = rtrim( $result, '.' );
 120          }
 121  
 122          return $result;
 123      }
 124  
 125  
 126      /// \privatesection
 127      var $Scale;
 128  };
 129  
 130  ?>