Merged in Charles-Edouard Ruault's calculator patch to add temp conversion.

3 files changed, 232 insertions, 5 deletions

diff --git a/etc/unit_conversion.dat b/etc/unit_conversion.dat
index 5ae312e..c19adf1 100644
--- a/etc/unit_conversion.dat
+++ b/etc/unit_conversion.dat
@@ -1,195 +1,406 @@
 /**********************************************************************
 ** Copyright (C) 2001 Trolltech AS.  All rights reserved.
 **
 ** This file is part of Qtopia Environment.
 **
 ** This file may be distributed and/or modified under the terms of the
 ** GNU General Public License version 2 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 
 STARTTYPE Weight
 STND grams
 
 NAME mg
 RATIO 1000
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME g
 RATIO 1
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME kg
 RATIO 0.001
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME tonnes
 RATIO 1e-06
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME carats
 RATIO 5
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME oz
 RATIO 0.03527336860670194
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME lb
 RATIO 0.002204585537918871
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME st
 RATIO 0.0001574703955656337
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME St tons
 RATIO 1.102292768959636e-06
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME Lg tons
 RATIO 9.841899722852103e-07
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME  
 RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME  
 RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
 
 ENDTYPE
 
 
 
 STARTTYPE Distance
 STND m
 
 NAME mm
 RATIO 1000
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME cm
 RATIO 100
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME m
 RATIO 1
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME km
 RATIO 0.001
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME points
 RATIO 2834.64566929134
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME in
 RATIO 39.3700787401575
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME ft
 RATIO 3.280839895013123
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME yd
 RATIO 1.093613298337708
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME mi
 RATIO 0.0006213711922373339
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME naut. mi
 RATIO 0.0005399568034557236
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME  
 RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME  
 RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
 
 ENDTYPE
 
 
 
 STARTTYPE Area
 STND sq m
 
 NAME sq mm
 RATIO 1000000
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME sq cm
 RATIO 10000
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME sq m
 RATIO 1
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME sq km
 RATIO 1e-06
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME hectares
 RATIO 0.0001
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME sq in
 RATIO 1550.0031000062
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME sq ft
 RATIO 10.7639104167097
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME sq yd
 RATIO 1.19599004630108
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME sq mi
 RATIO 0.000000386102158542446
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME acres
 RATIO 0.0002471053814671653
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME  
 RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME  
 RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
 
 ENDTYPE
 
+STARTTYPE Temperatures
+STND °C
+
+NAME  
+RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
+NAME  
+RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
+NAME  
+RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
+NAME  
+RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
+NAME  
+RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
+NAME °C
+RATIO 1.0
+PREOFF 0.0
+POSTOFF 0.0
+
+NAME °F
+RATIO 1.8
+PREOFF -32.0
+POSTOFF +32.0
+
+NAME  
+RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
+NAME  
+RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
+NAME  
+RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
+NAME  
+RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
+NAME  
+RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
+ENDTYPE
 
 
 STARTTYPE Volume
 STND litres
 
 NAME cu cm
 RATIO 1000
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME ml
 RATIO 1000
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME l
 RATIO 1
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME tblspoon
 RATIO 67.6280454036859
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME teaspoons
 RATIO 202.884136211058
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME cu in
 RATIO 61.0237440947323
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME cu ft
 RATIO 0.0353146667214886
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME pt
 RATIO 2.11337641886519
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME qt
 RATIO 1.05668820943259
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME gal (US)
 RATIO 0.264172052358148
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME  
 RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
 
 NAME  
 RATIO 1.
+PREOFF 0.0
+POSTOFF 0.0
+
 
 ENDTYPE
 
 Extra units 
 
 NAME fl oz (US)
 RATIO 33.8140227018429
+PREOFF 0.0
+POSTOFF 0.0
+
 
diff --git a/noncore/tools/calculator/calculatorimpl.cpp b/noncore/tools/calculator/calculatorimpl.cpp
index 2f7d7ce..1b93c7f 100644
--- a/noncore/tools/calculator/calculatorimpl.cpp
+++ b/noncore/tools/calculator/calculatorimpl.cpp
@@ -1,360 +1,374 @@
 /**********************************************************************
 ** Copyright (C) 2000 Trolltech AS.  All rights reserved.
 **
 ** This file is part of Qtopia Environment.
 **
 ** This file may be distributed and/or modified under the terms of the
 ** GNU General Public License version 2 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 
+/*
+ * 01/14/2002 Charles-Edouard Ruault <ce@ruault.com>
+ * Added support for Temperature conversions.
+ */
+
 #include "calculatorimpl.h"
 
 #include <qpe/resource.h>
 #include <qpe/qmath.h>
 #include <qpe/qpeapplication.h>
 
 #include <qpushbutton.h>
 #include <qcombobox.h>
 #include <qlabel.h>
 #include <qfont.h>
 #include <qlayout.h>
 #include <qstringlist.h>
 #include <qfile.h>
 #include <qtextstream.h>
 #include <qmessagebox.h>
 #include <math.h>
 
 CalculatorImpl::CalculatorImpl( QWidget * parent, const char * name,
                                 WFlags f )
     : Calculator( parent, name, f )
 {
     xtopowerofy = Resource::loadPixmap("xtopowerofy");
     ythrootofx = Resource::loadPixmap("ythrootofx");
     oneoverx = Resource::loadPixmap("oneoverx");
 
     memMark = new QLabel( "m", LCD );
     memMark->setFont( QFont( "helvetica", 12, QFont::Bold, TRUE ) );
     memMark->resize( 12, 12 );
     memMark->move( 4, 2 );
     memMark->hide();
     mem = 0;
 
     PushButtonMR->setEnabled( FALSE );
 
     current_mode = max_mode = conversion_mode_count = 0;
     last_conversion = -1;
 
 //bgr_command.insert( PushButtonFunction);
     bgr_command.insert( PushButtonMPlus);
     bgr_command.insert( PushButtonMR);
     bgr_command.insert( PushButtonMC);
     bgr_command.insert( PushButtonCE);
     connect( &bgr_command, SIGNAL(clicked(int) ), this, SLOT(command_buttons(int)));
 
     bgr_digits.insert(PushButton0);
     bgr_digits.insert(PushButton1);
     bgr_digits.insert(PushButton2);
     bgr_digits.insert(PushButton3);
     bgr_digits.insert(PushButton4);
     bgr_digits.insert(PushButton5);
     bgr_digits.insert(PushButton6);
     bgr_digits.insert(PushButton7);
     bgr_digits.insert(PushButton8);
     bgr_digits.insert(PushButton9);
     connect( &bgr_digits, SIGNAL(clicked(int) ), this, SLOT(enterNumber(int)));
 
 
     bgr_std.insert(PushButtonEquals);
     bgr_std.insert(PushButtonDecimal);
     bgr_std.insert(PushButtonAdd);
     bgr_std.insert(PushButtonMinus);
     bgr_std.insert(PushButtonDivide);
     bgr_std.insert(PushButtonTimes);
     connect( &bgr_std, SIGNAL(clicked(int) ), this, SLOT(std_buttons(int)));
 
 // change the / to a proper division signal
     PushButtonDivide->setText(QChar(0xF7));
 
     func_buttons[0] = PushButtonF1;
     func_buttons[1] = PushButtonF2;
     func_buttons[2] = PushButtonF3;
     func_buttons[3] = PushButtonF4;
     func_buttons[4] = PushButtonF5;
     func_buttons[5] = PushButtonF6;
     func_buttons[6] = PushButtonF7;
     func_buttons[7] = PushButtonF8;
     func_buttons[8] = PushButtonF9;
     func_buttons[9] = PushButtonF10;
     func_buttons[10] = PushButtonF11;
     func_buttons[11] = PushButtonF12;
 
     for ( int x = 0 ; x < func_button_count ; x++ ) {
         QPushButton* tmpbutton = func_buttons[x];
         faces << tmpbutton->text();
         bgr_function.insert(tmpbutton);
     }
     connect( &bgr_function, SIGNAL(clicked(int) ) , this, SLOT(do_convert(int) ) );
     connect( &bgr_function, SIGNAL(clicked(int) ) , this, SLOT(std_funcs (int) ) );
 
     connect(ComboBoxFunction, SIGNAL(activated(int) ), this, SLOT(function_button(int) ) );
 
     captions.append("Standard");
     ComboBoxFunction->insertItem(captions.last());
 
     // now add in the conversion modes
     // when the menu gets done, these should be in a submenu
     QString tmp = QPEApplication::qpeDir();
     tmp += "/etc/unit_conversion.dat";
     QFile myfile(tmp);
     if ( !myfile.open( IO_Translate | IO_ReadOnly ) ) {
         // QMessageBox::warning(this, "Warning", "Data file\nunit_conversion.dat\nnot found\nNo conversion\nfeatures will\nbe available");
         // disable the f button if no conv file available
         ComboBoxFunction->setEnabled(FALSE);
     }
     else {
         QString line, line2;
         QTextStream ts(&myfile);
 
         // first pass, see how many conversion types there are in order to allocate for them
         while ( ! ts.eof() ) {
             line = ts.readLine();
             if ( line.contains ("STARTTYPE" ) )
                 conversion_mode_count++;
         }
 
         entry_list = new double[conversion_mode_count*func_button_count];
-
+                preoffset_list = new double[conversion_mode_count*func_button_count];
+                postoffset_list = new double[conversion_mode_count*func_button_count];
         myfile.close();
         myfile.open( IO_Translate | IO_ReadOnly );
         QTextStream ts2(&myfile);
 
         // second pass, read in values
         int x = 0;
         while ( ! ts2.eof() ) {
                 line = ts2.readLine();
                 if ( line.contains("STARTTYPE") ) {
                         captions << line.remove(0,10);
                         ComboBoxFunction->insertItem(captions.last());
                         while ( !line.contains("ENDTYPE") ) {
                             line = ts2.readLine();
                             if ( line.contains("NAME") ) {
                                 faces << line.remove(0,5);
                                 line2 = ts2.readLine();
                                 line2.remove(0,6);
                                 entry_list[x] = line2.toDouble();
+                                                                line2 = ts2.readLine();
+                                line2.remove(0,7);
+                                preoffset_list[x] = line2.toDouble();
+                                                                line2 = ts2.readLine();
+                                line2.remove(0,8);
+                                postoffset_list[x] = line2.toDouble();
                                 x++;
                             }
                         }
                 }
         }
     }
     myfile.close();
     clear();
     max_mode = pre_conv_modes_count + conversion_mode_count + post_conv_modes_count - 1;
     display_pixmap_faces();
 
     qApp->installEventFilter( this );
 }
 
 bool CalculatorImpl::eventFilter( QObject *o, QEvent *e )
 {
     if ( e->type() == QEvent::KeyPress && state != sError ) {
         QKeyEvent *k = (QKeyEvent*)e;
         if ( k->key() >= Key_0 && k->key() <= Key_9 ) {
             enterNumber( k->key() - Key_0 );
             return true;
         } else {
             switch ( k->key() ) {
                 case Key_Equal:
                     std_buttons(0);
                     return true;
                 case Key_Period:
                     std_buttons(1);
                     return true;
                 case Key_Plus:
                     std_buttons(2);
                     return true;
                 case Key_Minus:
                     std_buttons(3);
                     return true;
                 case Key_Slash:
                     std_buttons(4);
                     return true;
                 case Key_Asterisk:
                     std_buttons(5);
                     return true;
                 case Key_Percent:
                     execOp( oPercent );
                     return true;
                 case Key_ParenLeft:
                     if ( current_mode <  pre_conv_modes_count )
                         execOp( oOpenBrace );
                     return true;
                 case Key_ParenRight:
                     if ( current_mode <  pre_conv_modes_count )
                         execOp( oCloseBrace );
                     return true;
                 default:
                     break;
             }
         }
     }
     return Calculator::eventFilter( o, e );
 }
 
 void CalculatorImpl::do_convert(int button) {
     if ( state == sError )
         return;
     if ( current_mode >= pre_conv_modes_count && current_mode <= (max_mode - post_conv_modes_count) &&
         button < changeable_func_button_count ) {
         if ( last_conversion > -1 ) {
             if( state == sNewNumber ){
-                acc = num
+                          acc = (num+ preoffset_list[(current_mode - pre_conv_modes_count) * func_button_count + last_conversion])
                     / (entry_list[(current_mode - pre_conv_modes_count) * func_button_count + last_conversion])
-                    * (entry_list[(current_mode - pre_conv_modes_count) * func_button_count + button]) ;
+                    * (entry_list[(current_mode - pre_conv_modes_count) * func_button_count + button]) 
+                                +postoffset_list[(current_mode - pre_conv_modes_count) * func_button_count + button];
                 num = acc;
                 LCD->display( acc );
             } else {
                 state = sNewNumber;
-                num = num
+                num = (num+ preoffset_list[(current_mode - pre_conv_modes_count) * func_button_count + last_conversion])
                     / (entry_list[(current_mode - pre_conv_modes_count) * func_button_count + last_conversion])
-                    * (entry_list[(current_mode - pre_conv_modes_count) * func_button_count + button]) ;
+                    * (entry_list[(current_mode - pre_conv_modes_count) * func_button_count + button]) 
+                                  + postoffset_list[(current_mode - pre_conv_modes_count) * func_button_count + button];;
                 LCD->display( num );
                 acc = num;
             }
         }
         last_conversion = button;
     }
 }
 
 
 void CalculatorImpl::function_button(int mode){
     if ( state == sError ) 
         clear();
     // dont need the next line when using a popup menu
     current_mode = mode;
 
     // reset the last conv
     last_conversion = -1;
 
     // set the caption
     this->setCaption( captions[current_mode] );
 
     reset_conv();
 
     for ( int x = 0 ; x < changeable_func_button_count ; x++ ) {
         QPushButton* tmpbutton = func_buttons[x];
 
          // if its a conversion , make it a toggle button
         if ( current_mode >= pre_conv_modes_count && current_mode <= (max_mode - post_conv_modes_count) ) {
             tmpbutton->setToggleButton(TRUE);
         } else {
             tmpbutton->setToggleButton(FALSE);
         }
         tmpbutton->setText( faces[current_mode * func_button_count + x] );
     }
 
     if ( current_mode == 0 ) display_pixmap_faces();
 
     if ( current_mode >= pre_conv_modes_count && current_mode <= (max_mode - post_conv_modes_count) ) {
             bgr_function.setExclusive(TRUE);
     } else {
             bgr_function.setExclusive(FALSE);
     }
 }
 
 void CalculatorImpl::display_pixmap_faces() {
     QPushButton* tmpbutton = func_buttons[5];
     tmpbutton->setPixmap(xtopowerofy);
 
     tmpbutton = func_buttons[6];
     tmpbutton->setPixmap(ythrootofx);
 
     tmpbutton = func_buttons[3];
     tmpbutton->setPixmap(oneoverx);
 }
 
 void CalculatorImpl::clear() {
     acc = num = 0;
     operationStack.clear();
     state = sStart;
     numDecimals = 0;
     numOpenBraces = 0;
     flPoint = FALSE;
     LCD->display( 0 );
     fake = QString::null;
 
     reset_conv();
 }
 
 void CalculatorImpl::reset_conv() {
     for ( int x = 0 ; x < changeable_func_button_count ; x++ ) {
         QPushButton* tmpbutton = func_buttons[x];
 
         // dont carry any selections into the next mode
         if ( tmpbutton->state() == QPushButton::On ) {
            tmpbutton->toggle();
         }
     }
 
     last_conversion = -1;
 }
 
 void CalculatorImpl::std_buttons(int button)
 {
     if ( state == sError )
         return;
     execOp( (Operation)(button + oSum) );
 }
 
 void CalculatorImpl::std_funcs(int button) {
     if ( state == sError )
         return;
     if ( current_mode <  pre_conv_modes_count ||
         button > changeable_func_button_count-1 ) {
         Operation op;
         if ( button < 10 )
             op = (Operation)(button + oSin);
         else if ( button == 10 )
             op = oOpenBrace;
         else 
             op = oCloseBrace;
         execOp( op );
     }
 }
 
 void CalculatorImpl::execOp( Operation i )
 {
     switch (i) {
             // these operators only affect the current number.
         case oDivX:
         case oLog:
         case oLn:
         case oSin:
         case oCos:
         case oTan:
             num = evalExpr(i);
             break;
 
         case oAdd:
         case oSub: {
             processStack( oAdd );
             Op op( num, i );
             operationStack.push( op );
             break;
         }
         case oDiv:
         case oMult:
         case oRoot:
         case oXsquared: {
diff --git a/noncore/tools/calculator/calculatorimpl.h b/noncore/tools/calculator/calculatorimpl.h
index bfb726f..f0180c9 100644
--- a/noncore/tools/calculator/calculatorimpl.h
+++ b/noncore/tools/calculator/calculatorimpl.h
@@ -1,135 +1,137 @@
 /**********************************************************************
 ** Copyright (C) 2000 Trolltech AS.  All rights reserved.
 **
 ** This file is part of Qtopia Environment.
 **
 ** This file may be distributed and/or modified under the terms of the
 ** GNU General Public License version 2 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 #ifndef CALCULATORIMPL_H
 #define CALCULATORIMPL_H
 
 
 #include <qlcdnumber.h>
 #include "calculator.h"
 #include <qpushbutton.h>
 #include <qbuttongroup.h>
 #include <qvaluestack.h>
 
 // mode x functions
 enum Operation {
      oNop,
      oOpenBrace,
      oCloseBrace,
      oSum,
      oPoint,
      oAdd,
      oSub,
      oDiv,
      oMult,
 
 // mode 0 functions
      oSin,
      oCos,
      oTan,
      oDivX,
      oPercent,
      oXsquared,
      oRoot,
      oLog,
      oLn,
      oChSign
 };
 
 // states
 #define sStart 0
 #define sNewNumber 1
 #define sError 2
 
 struct Op
 {
     Op() { number = 0; operation = oNop; }
     Op( double num, Operation op ) 
     { number = num; operation = op; }
     double number;
     Operation operation;
 };
 
 class QLabel;
 class CalculatorImpl : public Calculator
 {
     Q_OBJECT
 
 public:
     CalculatorImpl( QWidget * parent = 0, const char * name = 0,
                 WFlags f = 0 );
 
 public slots:
     void command_buttons(int);
     void enterNumber(int i);
     void std_buttons(int);
     void std_funcs(int);
     void do_convert(int);
     void function_button(int);
 
 protected:
     virtual bool eventFilter( QObject *o, QEvent *e );
 
 private:
     void clear();
 
     void reset_conv();
     
     void processStack( int op );
 
     QValueStack<Op> operationStack;
     int state;
 
     double acc, num, mem;
     int    numDecimals;
     bool   flPoint;
     int numOpenBraces;
 
     void   execOp( Operation i );
     double evalExpr( int op );
     QLabel * memMark;
     QString fake;
     
     // useful values for conversion stuff
     int current_mode, max_mode, conversion_mode_count, last_conversion;
 
     // make adding new modes easier for ourselves
     static const int pre_conv_modes_count = 1;
     static const int post_conv_modes_count = 0;
 
     // an array of pointers to the func buttons
     static const int func_button_count = 12;
         // this is an abomination
         static const int changeable_func_button_count = 10;
     QPushButton* func_buttons[func_button_count];
 
     QButtonGroup bgr_function, bgr_digits, bgr_std, bgr_command;
     QStringList faces, captions;
 
     // an array of doubles holding the conversion ratios
     double* entry_list;
+        double* preoffset_list;
+        double* postoffset_list;
 
     QPixmap xtopowerofy;
     QPixmap ythrootofx;
     QPixmap oneoverx;
 
     void display_pixmap_faces(void);
 };
 
 #endif