sim_model_source.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2022 Mikolaj Wielgus
 * Copyright (C) 2022-2023 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * 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 <sim/sim_model_source.h>
 
#include <fmt/core.h>
#include <pegtl.hpp>
#include <pegtl/contrib/parse_tree.hpp>
 
 
namespace SIM_MODEL_SOURCE_PARSER
{
 using namespace SIM_MODEL_SOURCE_GRAMMAR;
 
 template <typename Rule> struct pwlValuesSelector : std::false_type {};
 template <> struct pwlValuesSelector<number<SIM_VALUE::TYPE_FLOAT, NOTATION::SI>>
 : std::true_type {};
}
 
 
std::string SPICE_GENERATOR_SOURCE::ModelLine( const SPICE_ITEM& aItem ) const
{
 return "";
}
 
 
std::string SPICE_GENERATOR_SOURCE::ItemLine( const SPICE_ITEM& aItem ) const
{
 SPICE_ITEM item = aItem;
 
 std::string ac = "";
 std::string dc = "";
 
 if( const SIM_MODEL::PARAM* ac_param = m_model.FindParam( "ac" ) )
 ac = SIM_VALUE::ToSpice( ac_param->value );
 if( const SIM_MODEL::PARAM* dc_param = m_model.FindParam( "dc" ) )
 dc = SIM_VALUE::ToSpice( dc_param->value );
 
 bool emptyLine = true;
 item.modelName = "";
 
 // @FIXME
 // the keyword "DC" refers to both offset of a sine source, and value for DC analysis
 // Because of this, both values are always equal in a sine source.
 //
 // suggestion: rename the sine parameter from "DC" to "offset"
 
 if( dc != "" )
 {
 emptyLine = false;
 item.modelName += fmt::format( "DC {} ", dc );
 }
 
 if( m_model.GetSpiceInfo().inlineTypeString != ""
 && m_model.GetType() != SIM_MODEL::TYPE::V // DC-only sources are already processed
 && m_model.GetType() != SIM_MODEL::TYPE::I )
 {
 std::string args = "";
 
 switch( m_model.GetType() )
 {
 case SIM_MODEL::TYPE::V_PWL:
 case SIM_MODEL::TYPE::I_PWL:
 {
 tao::pegtl::string_input<> in( m_model.GetParam( 0 ).value, "from_content" );
 std::unique_ptr<tao::pegtl::parse_tree::node> root;
 
 try
 {
 root = tao::pegtl::parse_tree::parse<SIM_MODEL_SOURCE_PARSER::pwlValuesGrammar,
 SIM_MODEL_SOURCE_PARSER::pwlValuesSelector>
 ( in );
 }
 catch( const tao::pegtl::parse_error& )
 {
 break;
 }
 
 if( root )
 {
 for( const auto& node : root->children )
 {
 if( node->is_type<SIM_MODEL_SOURCE_PARSER::number<SIM_VALUE::TYPE_FLOAT,
 SIM_VALUE::NOTATION::SI>>() )
 {
 args.append( SIM_VALUE::ToSpice( node->string() ) + " " );
 }
 }
 }
 
 break;
 }
 
 // TODO: dt should be tstep by default.
 
 case SIM_MODEL::TYPE::V_WHITENOISE:
 case SIM_MODEL::TYPE::I_WHITENOISE:
 args.append( getParamValueString( "rms", "0" ) + " " );
 args.append( getParamValueString( "dt", "0" ) + " " );
 args.append( "0 0 0 0 0 " );
 break;
 
 case SIM_MODEL::TYPE::V_PINKNOISE:
 case SIM_MODEL::TYPE::I_PINKNOISE:
 args.append( "0 " );
 args.append( getParamValueString( "dt", "0" ) + " " );
 args.append( getParamValueString( "slope", "0" ) + " " );
 args.append( getParamValueString( "rms", "0" ) + " " );
 args.append( "0 0 0 " );
 break;
 
 case SIM_MODEL::TYPE::V_BURSTNOISE:
 case SIM_MODEL::TYPE::I_BURSTNOISE:
 args.append( "0 0 0 0 " );
 args.append( getParamValueString( "ampl", "0" ) + " " );
 args.append( getParamValueString( "tcapt", "0" ) + " " );
 args.append( getParamValueString( "temit", "0" ) + " " );
 break;
 
 case SIM_MODEL::TYPE::V_RANDUNIFORM:
 case SIM_MODEL::TYPE::I_RANDUNIFORM:
 {
 /* TODO
 args.append( "1 " );
 args.append( getParamValueString( "dt", "0" ) + " " );
 args.append( getParamValueString( "td", "0" ) + " " );
 
 SIM_VALUE_FLOAT min = dynamic_cast<SIM_VALUE_FLOAT&>( m_model.FindParam( "max" )->value );
 
 if( !min.ToString().empty() )
 min.FromString( "0" );
 
 SIM_VALUE_FLOAT max = dynamic_cast<SIM_VALUE_FLOAT&>( m_model.FindParam( "min" )->value );
 
 if( !max.ToString().empty() )
 max.FromString( "0" );
 
 SIM_VALUE_FLOAT range = max - min;
 SIM_VALUE_FLOAT offset = ( max + min ) / SIM_VALUE_FLOAT( 2 );
 
 args.append( range.ToSpiceString() + " " );
 args.append( offset.ToSpiceString() + " " );
 */
 break;
 }
 
 case SIM_MODEL::TYPE::V_RANDNORMAL:
 case SIM_MODEL::TYPE::I_RANDNORMAL:
 args.append( "2 " );
 args.append( getParamValueString( "dt", "0" ) + " " );
 args.append( getParamValueString( "td", "0" ) + " " );
 args.append( getParamValueString( "stddev", "0" ) + " " );
 args.append( getParamValueString( "mean", "0" ) + " " );
 break;
 
 case SIM_MODEL::TYPE::V_RANDEXP:
 case SIM_MODEL::TYPE::I_RANDEXP:
 args.append( "3 " );
 args.append( getParamValueString( "dt", "0" ) + " " );
 args.append( getParamValueString( "td", "0" ) + " " );
 args.append( getParamValueString( "mean", "0" ) + " " );
 args.append( getParamValueString( "offset", "0" ) + " " );
 break;
 
 /*
 case SIM_MODEL::TYPE::V_RANDPOISSON:
 case SIM_MODEL::TYPE::I_RANDPOISSON:
 args.append( "4 " );
 args.append( getParamValueString( "dt", "0" ) + " " );
 args.append( getParamValueString( "td", "0" ) + " " );
 args.append( getParamValueString( "lambda", "0" ) + " " );
 args.append( getParamValueString( "offset", "0" ) + " " );
 break;
 */
 
 default:
 for( const SIM_MODEL::PARAM& param : m_model.GetParams() )
 {
 std::string argStr = SIM_VALUE::ToSpice( param.value );
 
 if( argStr != "" )
 args.append( argStr + " " );
 }
 
 break;
 }
 
 emptyLine = false;
 item.modelName += fmt::format( "{}( {}) ", m_model.GetSpiceInfo().inlineTypeString, args );
 }
 else
 {
 switch( m_model.GetType() )
 case SIM_MODEL::TYPE::V_VCL:
 case SIM_MODEL::TYPE::I_VCL:
 {
 item.modelName += fmt::format( "{} ", getParamValueString( "gain", "1.0" ) );
 emptyLine = false;
 
 if( const SIM_MODEL::PARAM* ic = m_model.FindParam( "ic" ) )
 item.modelName += fmt::format( "ic={}", SIM_VALUE::ToSpice( ic->value ) );
 
 break;
 
 case SIM_MODEL::TYPE::V_CCL:
 case SIM_MODEL::TYPE::I_CCL:
 item.modelName += fmt::format( "{} {} ",
 getParamValueString( "control", "V?" ),
 getParamValueString( "gain", "1.0" ) );
 emptyLine = false;
 break;
 
 default:
 break;
 }
 }
 
 if( ac != "" )
 {
 std::string ph = "";
 
 if( const SIM_MODEL::PARAM* ph_param = m_model.FindParam( "ph" ) )
 ph = SIM_VALUE::ToSpice( ph_param->value );
 
 emptyLine = false;
 item.modelName += fmt::format( "AC {} {} ", ac, ph );
 }
 
 std::string portnum = "";
 
 if( const SIM_MODEL::PARAM* portnum_param = m_model.FindParam( "portnum" ) )
 portnum = SIM_VALUE::ToSpice( portnum_param->value );
 
 if( portnum != "" )
 {
 item.modelName += fmt::format( "portnum {} ", portnum );
 
 std::string z0 = "";
 
 if( const SIM_MODEL::PARAM* z0_param = m_model.FindParam( "z0" ) )
 z0 = SIM_VALUE::ToSpice( z0_param->value );
 
 if( z0 != "" )
 item.modelName += fmt::format( "z0 {} ", z0 );
 }
 
 if( emptyLine )
 {
 item.modelName = SIM_VALUE::ToSpice( m_model.GetParam( 0 ).value );
 }
 
 return SPICE_GENERATOR::ItemLine( item );
}
 
 
std::string SPICE_GENERATOR_SOURCE::getParamValueString( const std::string& aParamName,
 const std::string& aDefaultValue ) const
{
 std::string result = "";
 
 if ( m_model.FindParam( aParamName ) )
 result = SIM_VALUE::ToSpice( m_model.FindParam( aParamName )->value );
 
 if( result == "" )
 result = aDefaultValue;
 
 return result;
}
 
 
SIM_MODEL_SOURCE::SIM_MODEL_SOURCE( TYPE aType ) :
 SIM_MODEL( aType, std::make_unique<SPICE_GENERATOR_SOURCE>( *this ),
 std::make_unique<SIM_MODEL_SOURCE_SERIALIZER>( *this ) )
{
 for( const SIM_MODEL::PARAM::INFO& paramInfo : makeParamInfos( aType ) )
 AddParam( paramInfo );
}
 
 
void SIM_MODEL_SOURCE::doSetParamValue( int aParamIndex, const std::string& aValue )
{
 // Sources are special. All preceding parameter values must be filled. If they are not, fill
 // them out automatically. If a value is nulled, delete everything after it.
 if( aValue.empty() )
 {
 for( int paramIndex = static_cast<int>( aParamIndex );
 paramIndex < GetParamCount();
 ++paramIndex )
 {
 m_params.at( aParamIndex ).value = "";
 }
 }
 else
 {
 for( int paramIndex = 0; paramIndex < aParamIndex; ++paramIndex )
 {
 if( GetParam( paramIndex ).value == "" )
 {
 m_params.at( aParamIndex ).value = "0";
 SIM_MODEL::SetParamValue( paramIndex, "0" );
 }
 }
 }
 
 return SIM_MODEL::doSetParamValue( aParamIndex, aValue );
}
 
 
const std::vector<SIM_MODEL::PARAM::INFO>& SIM_MODEL_SOURCE::makeParamInfos( TYPE aType )
{
 static std::vector<PARAM::INFO> vdc = makeDcParamInfos( "y", "V" );
 static std::vector<PARAM::INFO> idc = makeDcParamInfos( "y", "A" );
 
 static std::vector<PARAM::INFO> vsin = makeSinParamInfos( "y", "V" );
 static std::vector<PARAM::INFO> isin = makeSinParamInfos( "y", "A" );
 
 static std::vector<PARAM::INFO> vpulse = makePulseParamInfos( "y", "V" );
 static std::vector<PARAM::INFO> ipulse = makePulseParamInfos( "y", "A" );
 
 static std::vector<PARAM::INFO> vexp = makeExpParamInfos( "y", "V" );
 static std::vector<PARAM::INFO> iexp = makeExpParamInfos( "y", "A" );
 
 /*static std::vector<PARAM::INFO> vsfam = makeSfamParamInfos( "y", "V" );
 static std::vector<PARAM::INFO> isfam = makeSfamParamInfos( "y", "A" );
 
 static std::vector<PARAM::INFO> vsffm = makeSffmParamInfos( "y", "V" );
 static std::vector<PARAM::INFO> isffm = makeSffmParamInfos( "y", "A" );*/
 
 static std::vector<PARAM::INFO> vcvs = makeVcParamInfos( "" );
 static std::vector<PARAM::INFO> ccvs = makeCcParamInfos( "ohm" );
 static std::vector<PARAM::INFO> vpwl = makePwlParamInfos( "y", "Voltage", "V" );
 
 static std::vector<PARAM::INFO> vccs = makeVcParamInfos( "S" );
 static std::vector<PARAM::INFO> cccs = makeCcParamInfos( "" );
 static std::vector<PARAM::INFO> ipwl = makePwlParamInfos( "y", "Current", "A" );
 
 static std::vector<PARAM::INFO> vwhitenoise = makeWhiteNoiseParamInfos( "y", "V" );
 static std::vector<PARAM::INFO> iwhitenoise = makeWhiteNoiseParamInfos( "y", "A" );
 
 static std::vector<PARAM::INFO> vpinknoise = makePinkNoiseParamInfos( "y", "V" );
 static std::vector<PARAM::INFO> ipinknoise = makePinkNoiseParamInfos( "y", "A" );
 
 static std::vector<PARAM::INFO> vburstnoise = makeBurstNoiseParamInfos( "y", "V" );
 static std::vector<PARAM::INFO> iburstnoise = makeBurstNoiseParamInfos( "y", "A" );
 
 static std::vector<PARAM::INFO> vrandomuniform = makeRandomUniformParamInfos( "y", "V" );
 static std::vector<PARAM::INFO> irandomuniform = makeRandomUniformParamInfos( "y", "A" );
 
 static std::vector<PARAM::INFO> vrandomnormal = makeRandomNormalParamInfos( "y", "V" );
 static std::vector<PARAM::INFO> irandomnormal = makeRandomNormalParamInfos( "y", "A" );
 
 static std::vector<PARAM::INFO> vrandomexp = makeRandomExpParamInfos( "y", "V" );
 static std::vector<PARAM::INFO> irandomexp = makeRandomExpParamInfos( "y", "A" );
 
 static std::vector<PARAM::INFO> vrandompoisson = makeRandomPoissonParamInfos( "y", "V" );
 static std::vector<PARAM::INFO> irandompoisson = makeRandomPoissonParamInfos( "y", "A" );
 
 switch( aType )
 {
 case TYPE::V: return vdc;
 case TYPE::I: return idc;
 case TYPE::V_SIN: return vsin;
 case TYPE::I_SIN: return isin;
 case TYPE::V_PULSE: return vpulse;
 case TYPE::I_PULSE: return ipulse;
 case TYPE::V_EXP: return vexp;
 case TYPE::I_EXP: return iexp;
 //case TYPE::V_SFAM: return vsfam;
 //case TYPE::I_SFAM: return isfam;
 //case TYPE::V_SFFM: return vsffm;
 //case TYPE::I_SFFM: return isffm;
 case TYPE::V_VCL: return vcvs;
 case TYPE::V_CCL: return ccvs;
 case TYPE::V_PWL: return vpwl;
 case TYPE::I_VCL: return vccs;
 case TYPE::I_CCL: return cccs;
 case TYPE::I_PWL: return ipwl;
 case TYPE::V_WHITENOISE: return vwhitenoise;
 case TYPE::I_WHITENOISE: return iwhitenoise;
 case TYPE::V_PINKNOISE: return vpinknoise;
 case TYPE::I_PINKNOISE: return ipinknoise;
 case TYPE::V_BURSTNOISE: return vburstnoise;
 case TYPE::I_BURSTNOISE: return iburstnoise;
 case TYPE::V_RANDUNIFORM: return vrandomuniform;
 case TYPE::I_RANDUNIFORM: return irandomuniform;
 case TYPE::V_RANDNORMAL: return vrandomnormal;
 case TYPE::I_RANDNORMAL: return irandomnormal;
 case TYPE::V_RANDEXP: return vrandomexp;
 case TYPE::I_RANDEXP: return irandomexp;
 //case TYPE::V_RANDPOISSON: return vrandompoisson;
 //case TYPE::I_RANDPOISSON: return irandompoisson;
 default:
 wxFAIL_MSG( "Unhandled SIM_MODEL type in SIM_MODEL_SOURCE" );
 static std::vector<SIM_MODEL::PARAM::INFO> empty;
 return empty;
 }
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makeDcParamInfos( const std::string& aPrefix,
 const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "dc";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "DC value";
 paramInfos.push_back( paramInfo );
 
 appendAcParamInfos( paramInfos, aUnit );
 appendSpParamInfos( paramInfos, aUnit );
 return paramInfos;
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makeSinParamInfos( const std::string& aPrefix,
 const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "dc";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "DC offset";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "ampl";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Amplitude";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "f";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "Hz";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "1/tstop";
 paramInfo.description = "Frequency";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "td";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Delay";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "theta";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "1/s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Damping factor";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "phase";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "°";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Phase";
 paramInfos.push_back( paramInfo );
 
 appendAcParamInfos( paramInfos, aUnit );
 appendSpParamInfos( paramInfos, aUnit );
 return paramInfos;
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makePulseParamInfos( const std::string& aPrefix,
 const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = aPrefix + "1";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Initial value";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = aPrefix + "2";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Pulsed value";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "td";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Delay";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "tr";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "tstep";
 paramInfo.description = "Rise time";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "tf";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "tstep";
 paramInfo.description = "Fall time";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "tw"; // Ngspice calls it "pw".
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "tstop";
 paramInfo.description = "Pulse width";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "per";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "tstop";
 paramInfo.description = "Period";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "np";
 paramInfo.type = SIM_VALUE::TYPE_INT;
 paramInfo.unit = "";
 paramInfo.category = PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Number of pulses";
 paramInfos.push_back( paramInfo );
 
 appendAcParamInfos( paramInfos, aUnit );
 appendSpParamInfos( paramInfos, aUnit );
 return paramInfos;
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makeExpParamInfos( const std::string& aPrefix,
 const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = aPrefix + "1";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Initial value";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = aPrefix + "2";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Pulsed value";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "td1";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Rise delay time";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "tau1";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "tstep";
 paramInfo.description = "Rise time constant";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "td2";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "td1+tstep";
 paramInfo.description = "Fall delay time";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "tau2";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "tstep";
 paramInfo.description = "Fall time constant";
 paramInfos.push_back( paramInfo );
 
 appendAcParamInfos( paramInfos, aUnit );
 appendSpParamInfos( paramInfos, aUnit );
 return paramInfos;
}
 
 
/*std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makeSfamParamInfos( const std::string& aPrefix, const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "dc";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "DC offset";
 
 paramInfo.name = "ampl";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Amplitude";
 
 paramInfos.push_back( paramInfo );
 paramInfo.name = "mo";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Modulating signal offset";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "fc";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "Hz";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Carrier frequency";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "mf";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "Hz";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Modulating frequency";
 paramInfos.push_back( paramInfo );
 
 appendAcParamInfos( paramInfos, aUnit );
 return paramInfos;
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makeSffmParamInfos( const std::string& aPrefix, const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "dc";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "DC offset";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "ampl";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Amplitude";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "fc";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "Hz";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "1/tstop";
 paramInfo.description = "Carrier frequency";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "mdi";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Modulation index";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "fs";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "Hz";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "1/tstop";
 paramInfo.description = "Signal frequency";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "phasec";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "°";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Carrier phase";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "phases";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "°";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Signal phase";
 paramInfos.push_back( paramInfo );
 
 appendAcParamInfos( paramInfos, aUnit );
 return paramInfos;
}*/
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makeCcParamInfos( const std::string& aGainUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "gain";
 paramInfo.id = 1;
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aGainUnit;
 paramInfo.description = "Gain";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "control";
 paramInfo.id = 2;
 paramInfo.type = SIM_VALUE::TYPE_STRING;
 paramInfo.description = "Controlling voltage source";
 paramInfos.push_back( paramInfo );
 
 return paramInfos;
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makeVcParamInfos( const std::string& aGainUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "gain";
 paramInfo.id = 1;
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aGainUnit;
 paramInfo.description = "Gain";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "ic";
 paramInfo.id = 7;
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "V";
 paramInfo.description = "Initial condition of controlling source (ic)";
 paramInfos.push_back( paramInfo );
 
 return paramInfos;
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makePwlParamInfos( const std::string& aPrefix,
 const std::string& aQuantity,
 const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "pwl";
 paramInfo.type = SIM_VALUE::TYPE_STRING;
 paramInfo.unit = "s," + aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = aUnit == "V" ? "Time-voltage points" : "Time-current points";
 paramInfos.push_back( paramInfo );
 
 // TODO: Ngspice doesn't support "td" and "r" for current sources, so let's disable that for
 // now.
 
 /*paramInfo.name = "td";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = aUnit == "V" ? "Time-voltage points" : "Time-current points";
 paramInfo.isSpiceInstanceParam = true;
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "repeat";
 paramInfo.type = SIM_VALUE::TYPE_BOOL;
 paramInfo.unit = "";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Repeat forever";
 paramInfo.isSpiceInstanceParam = true;
 paramInfo.spiceInstanceName = "r";
 paramInfos.push_back( paramInfo );*/
 
 /*paramInfo.name = "t";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT_VECTOR;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Time vector";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = aPrefix;
 paramInfo.type = SIM_VALUE::TYPE_FLOAT_VECTOR;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = aQuantity + " vector";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "repeat";
 paramInfo.type = SIM_VALUE::TYPE_BOOL;
 paramInfo.unit = "";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "";
 paramInfo.description = "Repeat forever";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "td";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Delay";
 paramInfos.push_back( paramInfo );*/
 
 appendAcParamInfos( paramInfos, aUnit );
 appendSpParamInfos( paramInfos, aUnit );
 return paramInfos;
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makeWhiteNoiseParamInfos( const std::string& aPrefix,
 const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "rms";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "White noise RMS amplitude";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "dt";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Time step";
 paramInfos.push_back( paramInfo );
 
 appendAcParamInfos( paramInfos, aUnit );
 appendSpParamInfos( paramInfos, aUnit );
 return paramInfos;
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makePinkNoiseParamInfos( const std::string& aPrefix, 
 const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "rms";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "1/f noise RMS amplitude";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "slope";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "1";
 paramInfo.description = "1/f noise exponent";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "dt";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Time step";
 paramInfos.push_back( paramInfo );
 
 appendAcParamInfos( paramInfos, aUnit );
 appendSpParamInfos( paramInfos, aUnit );
 return paramInfos;
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makeBurstNoiseParamInfos( const std::string& aPrefix,
 const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "ampl";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Burst noise amplitude";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "tcapt";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Burst noise trap capture time";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "temit";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Burst noise trap emission time";
 paramInfos.push_back( paramInfo );
 
 appendAcParamInfos( paramInfos, aUnit );
 appendSpParamInfos( paramInfos, aUnit );
 return paramInfos;
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makeRandomUniformParamInfos( const std::string& aPrefix,
 const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "min";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "-0.5";
 paramInfo.description = "Min. value";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "max";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0.5";
 paramInfo.description = "Max. value";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "dt";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Time step";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "td";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Delay";
 paramInfos.push_back( paramInfo );
 
 appendAcParamInfos( paramInfos, aUnit );
 appendSpParamInfos( paramInfos, aUnit );
 return paramInfos;
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makeRandomNormalParamInfos( const std::string& aPrefix,
 const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "mean";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Mean";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "stddev";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "1";
 paramInfo.description = "Standard deviation";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "dt";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Time step";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "td";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Delay";
 paramInfos.push_back( paramInfo );
 
 appendAcParamInfos( paramInfos, aUnit );
 appendSpParamInfos( paramInfos, aUnit );
 return paramInfos;
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makeRandomExpParamInfos( const std::string& aPrefix,
 const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "offset";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Offset";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "mean";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "1";
 paramInfo.description = "Mean";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "dt";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Time step";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "td";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Delay";
 paramInfos.push_back( paramInfo );
 
 appendAcParamInfos( paramInfos, aUnit );
 appendSpParamInfos( paramInfos, aUnit );
 return paramInfos;
}
 
 
std::vector<SIM_MODEL::PARAM::INFO> SIM_MODEL_SOURCE::makeRandomPoissonParamInfos( const std::string& aPrefix,
 const std::string& aUnit )
{
 std::vector<PARAM::INFO> paramInfos;
 PARAM::INFO paramInfo;
 
 paramInfo.name = "offset";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Offset";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "lambda";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "1";
 paramInfo.description = "Mean";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "dt";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Time step";
 paramInfos.push_back( paramInfo );
 
 paramInfo.name = "td";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "s";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::PRINCIPAL;
 paramInfo.defaultValue = "0";
 paramInfo.description = "Delay";
 paramInfos.push_back( paramInfo );
 
 appendAcParamInfos( paramInfos, aUnit );
 appendSpParamInfos( paramInfos, aUnit );
 return paramInfos;
}
 
void SIM_MODEL_SOURCE::appendAcParamInfos( std::vector<PARAM::INFO>& aParamInfos, const std::string& aUnit )
{
 PARAM::INFO paramInfo;
 
 paramInfo.name = "ac";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = aUnit;
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::AC;
 paramInfo.defaultValue = "0";
 paramInfo.description = "AC magnitude";
 aParamInfos.push_back( paramInfo );
 
 paramInfo.name = "ph";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "°";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::AC;
 paramInfo.defaultValue = "0";
 paramInfo.description = "AC phase";
 aParamInfos.push_back( paramInfo );
}
 
void SIM_MODEL_SOURCE::appendSpParamInfos( std::vector<PARAM::INFO>& aParamInfos,
 const std::string& aUnit )
{
 PARAM::INFO paramInfo;
 
 if( !strcmp( aUnit.c_str(), "V" ) )
 {
 paramInfo.name = "portnum";
 paramInfo.type = SIM_VALUE::TYPE_INT;
 paramInfo.unit = "";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::S_PARAM;
 paramInfo.defaultValue = "";
 paramInfo.description = "Port number";
 aParamInfos.push_back( paramInfo );
 
 paramInfo.name = "z0";
 paramInfo.type = SIM_VALUE::TYPE_FLOAT;
 paramInfo.unit = "Ohm";
 paramInfo.category = SIM_MODEL::PARAM::CATEGORY::S_PARAM;
 paramInfo.defaultValue = "";
 paramInfo.description = "Internal impedance";
 aParamInfos.push_back( paramInfo );
 }
}
 
 
std::vector<std::string> SIM_MODEL_SOURCE::GetPinNames() const
{
 if( GetDeviceType() == SIM_MODEL::DEVICE_T::E || GetDeviceType() == SIM_MODEL::DEVICE_T::G )
 return { "+", "-", "C+", "C-" };
 else
 return { "+", "-" };
}