spice_value.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2016 CERN
 * Copyright (C) 2016-2023 KiCad Developers, see AUTHORS.txt for contributors.
 * @author Maciej Suminski <[email protected]>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * https://www.gnu.org/licenses/gpl-3.0.html
 * or you may search the http://www.gnu.org website for the version 3 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
#include "spice_value.h"
#include <math/util.h>
#include <core/kicad_algo.h>
 
#include <stdexcept>
#include <cmath>
 
#include <wx/textentry.h>
#include <wx/numformatter.h>
#include <confirm.h>
#include <common.h>
#include <locale_io.h>
 
 
void SPICE_VALUE_FORMAT::FromString( const wxString& aString )
{
 long val;
 aString.Left( 1 ).ToLong( &val );
 Precision = (int) val;
 Range = aString.Right( aString.Length() - 1 );
}
 
 
wxString SPICE_VALUE_FORMAT::ToString() const
{
 return wxString::Format( wxS( "%d%s" ), alg::clamp( 0, Precision, 9 ), Range );
}
 
 
void SPICE_VALUE_FORMAT::UpdateUnits( const wxString& aUnits )
{
 if( Range.GetChar( 0 ) == '~' )
 Range = Range.Left( 1 ) + aUnits;
 else if( SPICE_VALUE::ParseSIPrefix( Range.GetChar( 0 ) ) != SPICE_VALUE::PFX_NONE )
 Range = Range.Left( 1 ) + aUnits;
 else
 Range = aUnits;
}
 
 
SPICE_VALUE::SPICE_VALUE( const wxString& aString ) :
 m_base( 0.0 ),
 m_prefix( PFX_NONE ),
 m_spiceStr( false )
{
 if( aString.IsEmpty() )
 return;
 
 char units[8] = { 0, };
 LOCALE_IO dummy; // Numeric values must be in "C" locale ('.' decimal separator)
 
 sscanf( (const char*) aString.c_str(), "%lf%7s", &m_base, units );
 
 if( *units == 0 )
 {
 Normalize();
 return;
 }
 
 m_spiceStr = true;
 
 for( char* bufPtr = units; *bufPtr; ++bufPtr )
 *bufPtr = tolower( *bufPtr );
 
 if( strcmp( units, "meg" ) == 0 )
 {
 m_prefix = PFX_MEGA;
 }
 else
 {
 switch( units[0] )
 {
 case 'f': m_prefix = PFX_FEMTO; break;
 case 'p': m_prefix = PFX_PICO; break;
 case 'n': m_prefix = PFX_NANO; break;
 case 'u': m_prefix = PFX_MICRO; break;
 case 'm': m_prefix = PFX_MILI; break;
 case 'k': m_prefix = PFX_KILO; break;
 case 'g': m_prefix = PFX_GIGA; break;
 case 't': m_prefix = PFX_TERA; break;
 default: m_prefix = PFX_NONE; break;
 }
 }
 
 Normalize();
}
 
 
void SPICE_VALUE::Normalize()
{
 while( std::fabs( m_base ) >= 1000.0 )
 {
 m_base *= 0.001;
 m_prefix = (UNIT_PREFIX)( m_prefix + 3 );
 
 if( m_prefix == PFX_TERA ) // this is the biggest unit available
 break;
 }
 
 while( m_base != 0.0 && std::fabs( m_base ) < 1.000 )
 {
 m_base *= 1000.0;
 m_prefix = (UNIT_PREFIX)( m_prefix - 3 );
 
 if( m_prefix == PFX_FEMTO ) // this is the smallest unit available
 break;
 }
}
 
 
wxString spice_prefix( SPICE_VALUE::UNIT_PREFIX aPrefix )
{
 switch( aPrefix )
 {
 case SPICE_VALUE::PFX_FEMTO: return wxT( "f" );
 case SPICE_VALUE::PFX_PICO: return wxT( "p" );
 case SPICE_VALUE::PFX_NANO: return wxT( "n" );
 case SPICE_VALUE::PFX_MICRO: return wxT( "u" );
 case SPICE_VALUE::PFX_MILI: return wxT( "m" );
 case SPICE_VALUE::PFX_NONE: return wxEmptyString;
 case SPICE_VALUE::PFX_KILO: return wxT( "k" );
 case SPICE_VALUE::PFX_MEGA: return wxT( "Meg" );
 case SPICE_VALUE::PFX_GIGA: return wxT( "G" );
 case SPICE_VALUE::PFX_TERA: return wxT( "T" );
 }
 
 return wxEmptyString;
}
 
 
wxString si_prefix( SPICE_VALUE::UNIT_PREFIX aPrefix )
{
 switch( aPrefix )
 {
 case SPICE_VALUE::PFX_FEMTO: return wxT( "f" );
 case SPICE_VALUE::PFX_PICO: return wxT( "p" );
 case SPICE_VALUE::PFX_NANO: return wxT( "n" );
 case SPICE_VALUE::PFX_MICRO: return wxT( "u" );
 case SPICE_VALUE::PFX_MILI: return wxT( "m" );
 case SPICE_VALUE::PFX_NONE: return wxEmptyString;
 case SPICE_VALUE::PFX_KILO: return wxT( "K" );
 case SPICE_VALUE::PFX_MEGA: return wxT( "M" );
 case SPICE_VALUE::PFX_GIGA: return wxT( "G" );
 case SPICE_VALUE::PFX_TERA: return wxT( "T" );
 }
 
 return wxEmptyString;
}
 
 
SPICE_VALUE::UNIT_PREFIX SPICE_VALUE::ParseSIPrefix( wxChar c )
{
 switch( c )
 {
 case 'f': return SPICE_VALUE::PFX_FEMTO;
 case 'p': return SPICE_VALUE::PFX_PICO;
 case 'n': return SPICE_VALUE::PFX_NANO;
 case 'u': return SPICE_VALUE::PFX_MICRO;
 case 'm': return SPICE_VALUE::PFX_MILI;
 case 'K': return SPICE_VALUE::PFX_KILO;
 case 'M': return SPICE_VALUE::PFX_MEGA;
 case 'G': return SPICE_VALUE::PFX_GIGA;
 case 'T': return SPICE_VALUE::PFX_TERA;
 default: return SPICE_VALUE::PFX_NONE;
 }
}
 
 
double SPICE_VALUE::ToNormalizedDouble( wxString* aPrefix )
{
 Normalize();
 
 *aPrefix = spice_prefix( m_prefix );
 return m_base;
}
 
 
double SPICE_VALUE::ToDouble() const
{
 double res = m_base;
 
 if( m_prefix != PFX_NONE )
 res *= std::pow( 10, (int) m_prefix );
 
 return res;
}
 
wxString SPICE_VALUE::ToString() const
{
 wxString res( wxString::Format( "%.3f", ToDouble() ) );
 StripZeros( res );
 
 return res;
}
 
 
wxString SPICE_VALUE::ToString( const SPICE_VALUE_FORMAT& aFormat )
{
 wxString range( aFormat.Range );
 
 if( range.StartsWith( wxS( "~" ) ) )
 {
 Normalize();
 range = si_prefix( m_prefix ) + range.Right( range.Length() - 1 );
 }
 else
 {
 SPICE_VALUE::UNIT_PREFIX rangePrefix = ParseSIPrefix( range[0] );
 m_base = m_base * std::pow( 10, m_prefix - rangePrefix );
 m_prefix = rangePrefix;
 }
 
 double mantissa = m_base;
 int scale = 0;
 
 while( std::fabs( mantissa ) >= 10.0 )
 {
 mantissa *= 0.1;
 scale += 1;
 }
 
 while( mantissa != 0.0 && std::fabs( mantissa ) < 1.0 )
 {
 mantissa *= 10;
 scale -= 1;
 }
 
 mantissa = KiROUND( mantissa * std::pow( 10, aFormat.Precision - 1 ) );
 mantissa *= std::pow( 10, scale - aFormat.Precision + 1 );
 
 wxString res = wxString::FromCDouble( mantissa, std::max( 0, aFormat.Precision - scale - 1 ) );
 return res + range;
}
 
 
wxString SPICE_VALUE::ToSpiceString() const
{
 wxString res = wxString::FromCDouble( m_base );
 StripZeros( res );
 res += spice_prefix( m_prefix );
 
 return res;
}
 
 
SPICE_VALUE SPICE_VALUE::operator+( const SPICE_VALUE& aOther ) const
{
 int prefixDiff = m_prefix - aOther.m_prefix;
 SPICE_VALUE res;
 res.m_spiceStr = m_spiceStr || aOther.m_spiceStr;
 
 // Convert both numbers to a common prefix
 if( prefixDiff > 0 )
 {
 // Switch to the aOther prefix
 res.m_base = ( m_base * std::pow( 10, prefixDiff ) ) + aOther.m_base;
 res.m_prefix = aOther.m_prefix;
 }
 else if( prefixDiff < 0 )
 {
 // Use the current prefix
 res.m_base = m_base + ( aOther.m_base * std::pow( 10, -prefixDiff ) );
 res.m_prefix = m_prefix;
 }
 else
 {
 res.m_base = m_base + aOther.m_base;
 res.m_prefix = m_prefix; // == aOther.m_prefix
 }
 
 res.Normalize();
 
 return res;
}
 
 
SPICE_VALUE SPICE_VALUE::operator-( const SPICE_VALUE& aOther ) const
{
 int prefixDiff = m_prefix - aOther.m_prefix;
 SPICE_VALUE res;
 res.m_spiceStr = m_spiceStr || aOther.m_spiceStr;
 
 // Convert both numbers to a common prefix
 if( prefixDiff > 0 )
 {
 // Switch to the aOther prefix
 res.m_base = m_base * std::pow( 10, prefixDiff ) - aOther.m_base;
 res.m_prefix = aOther.m_prefix;
 }
 else if( prefixDiff < 0 )
 {
 // Use the current prefix
 res.m_base = m_base - aOther.m_base * std::pow( 10, -prefixDiff );
 res.m_prefix = m_prefix;
 }
 else
 {
 res.m_base = m_base - aOther.m_base;
 res.m_prefix = m_prefix; // == aOther.m_prefix
 }
 
 res.Normalize();
 
 return res;
}
 
 
SPICE_VALUE SPICE_VALUE::operator*( const SPICE_VALUE& aOther ) const
{
 SPICE_VALUE res( m_base * aOther.m_base, (UNIT_PREFIX)( m_prefix + aOther.m_prefix ) );
 res.m_spiceStr = m_spiceStr || aOther.m_spiceStr;
 res.Normalize();
 
 return res;
}
 
 
SPICE_VALUE SPICE_VALUE::operator/( const SPICE_VALUE& aOther ) const
{
 SPICE_VALUE res( m_base / aOther.m_base, (UNIT_PREFIX)( m_prefix - aOther.m_prefix ) );
 res.m_spiceStr = m_spiceStr || aOther.m_spiceStr;
 res.Normalize();
 
 return res;
}
 
 
void SPICE_VALUE::StripZeros( wxString& aString )
{
 if ( aString.Find( ',' ) >= 0 || aString.Find( '.' ) >= 0 )
 {
 while( aString.EndsWith( '0' ) )
 aString.RemoveLast();
 
 if( aString.EndsWith( '.' ) || aString.EndsWith( ',' ) )
 aString.RemoveLast();
 }
}
 
 
bool SPICE_VALIDATOR::Validate( wxWindow* aParent )
{
 wxTextEntry* const text = GetTextEntry();
 
 if( !text )
 return false;
 
 if( text->IsEmpty() )
 {
 if( m_emptyAllowed )
 return true;
 
 DisplayError( aParent, wxString::Format( _( "Please, fill required fields" ) ) );
 return false;
 }
 
 wxString svalue = text->GetValue();
 
 // In countries where the decimal separator is not a point, if the user
 // has not used a point, replace the decimal separator by the point, as needed
 // by spice simulator which uses the "C" decimal separator
 svalue.Replace(",", "." );
 
 try
 {
 // If SPICE_VALUE can be constructed, then it is a valid Spice value
 SPICE_VALUE val( svalue );
 }
 catch( ... )
 {
 DisplayError( aParent, wxString::Format( _( "'%s' is not a valid Spice value." ),
 text->GetValue() ) );
 
 return false;
 }
 
 if( svalue != text->GetValue() )
 text->SetValue( svalue );
 
 return true;
}