void VectorialFunction::parse()
{
clear();
for(Uint i = 0; i < m_functions.size(); ++i)
{
FunctionParser* ptr = new FunctionParser();
ptr->AddConstant("pi", Consts::pi());
m_parsers.push_back(ptr);
// CFinfo << "Parsing Function: \'" << m_functions[i] << "\' Vars: \'" << m_vars << "\'\n" << CFendl;
ptr->Parse(m_functions[i],m_vars);
if ( ptr->GetParseErrorType() != FunctionParser::FP_NO_ERROR )
{
std::string msg("ParseError in VectorialFunction::parse(): ");
msg += " Error [" +std::string(ptr->ErrorMsg()) + "]";
msg += " Function [" + m_functions[i] + "]";
msg += " Vars: [" + m_vars + "]";
throw common::ParsingFailed (FromHere(),msg);
}
}
m_result.resize(m_functions.size());
m_is_parsed = true;
}
void Excitation::CalcCustomExcitation(double f0, int nTS, string signal)
{
if (dT==0) return;
if (nTS<=0) return;
Length = (unsigned int)(nTS);
// cerr << "Operator::CalcSinusExcitation: Length of the excite signal: " << ExciteLength << " timesteps" << endl;
delete[] Signal_volt;
delete[] Signal_curr;
Signal_volt = new FDTD_FLOAT[Length+1];
Signal_curr = new FDTD_FLOAT[Length+1];
Signal_volt[0]=0.0;
Signal_curr[0]=0.0;
FunctionParser fParse;
fParse.AddConstant("pi", 3.14159265358979323846);
fParse.AddConstant("e", 2.71828182845904523536);
fParse.Parse(signal,"t");
if (fParse.GetParseErrorType()!=FunctionParser::FP_NO_ERROR)
{
cerr << "Operator::CalcCustomExcitation: Function Parser error: " << fParse.ErrorMsg() << endl;
exit(1);
}
double vars[1];
for (unsigned int n=1; n<Length+1; ++n)
{
vars[0] = (n-1)*dT;
Signal_volt[n] = fParse.Eval(vars);
vars[0] += 0.5*dT;
Signal_curr[n] = fParse.Eval(vars);
}
m_f_max = f0;
m_foi = f0;
SetNyquistNum( CalcNyquistNum(f0,dT) );
}
//_____________________________________________________________________________
//
void tf_set_formula()
//-----------------------------------------------------------------------------
{
// Parse transfer function formula
if( tf_fun_formula[0] == '\0' ) return ;
FunctionParser fparser ;
int res = fparser.Parse( (const char*)tf_fun_formula, "x" ) ;
if( fparser.GetParseErrorType() != FunctionParser::NO_SYNTAX_ERROR )
{
printf( "transfer formula error: %s\n\t%s\n\t% *d\n", fparser.ErrorMsg(), tf_fun_formula, res, 1 ) ;
return ;
}
// Retreives the color map
if( tf_colmap < 0 || tf_colmap >= CMAP_NB ) return ;
const float *colmap = cmaps[tf_colmap] ;
// allocate the transfer function
int tf_size = tf_sym ? 512 : 256 ;
vsvr.tf_set_intern() ;
vsvr.tf_set_size( tf_size ) ;
vsvr.tf_alloc() ;
// fills the texture
float x = 0.0f ;
float dx = 1.0f / (tf_size-1) ;
for( int i = 0 ; i < tf_size ; ++i, x += dx )
{
int k = i ;
// symmetric
if( i > 255 ) k = 511 - i ;
// inverse
if( tf_inv ) k = 255 - k ;
const float *col = colmap + 3*k ;
float a = fparser.Eval( &x ) ;
if( a < 0.0f ) a = 0.0f ;
if( a > 1.0f ) a = 1.0f ;
vsvr.tf_set( i, col[0], col[1], col[2], a*opacity ) ;
}
force_reload = true ;
}
//-------------------------------------------------------------------------------------------------
double BenchFParser::DoBenchmark(const std::string& sExpr, long iCount)
{
double fRes (0);
double fSum (0);
FunctionParser Parser;
Parser.AddConstant("pi", (double)M_PI);
Parser.AddConstant("e", (double)M_E);
if (Parser.Parse(sExpr.c_str(), "a,b,c,x,y,z,w") >= 0)
{
StopTimerAndReport(Parser.ErrorMsg());
return m_fTime1;
}
else
{
double vals[] = {
1.1,
2.2,
3.3,
2.123456,
3.123456,
4.123456,
5.123456
};
fRes = Parser.Eval(vals);
StartTimer();
for (int j = 0; j < iCount; ++j)
{
fSum += Parser.Eval(vals);
std::swap(vals[0], vals[1]);
std::swap(vals[3], vals[4]);
}
StopTimer(fRes, fSum, iCount);
}
return m_fTime1;
}
//-------------------------------------------------------------------------------------------------
double BenchFParser::DoBenchmark(const std::string& sExpr, long iCount)
{
double fRes = 0.0;
double fSum = 0.0;
FunctionParser Parser;
Parser.AddConstant("pi", (double)M_PI);
Parser.AddConstant("e", (double)M_E);
if (Parser.Parse(sExpr.c_str(), "a,b,c,x,y,z,w") >= 0)
{
StopTimerAndReport(Parser.ErrorMsg());
return m_fTime1;
}
else
{
double vals[] = {
1.1,
2.2,
3.3,
2.123456,
3.123456,
4.123456,
5.123456
};
//Prime the I and D caches for the expression
{
double d0 = 0.0;
double d1 = 0.0;
for (std::size_t i = 0; i < priming_rounds; ++i)
{
if (i & 1)
d0 += Parser.Eval(vals);
else
d1 += Parser.Eval(vals);
}
if (
(d0 == std::numeric_limits<double>::infinity()) &&
(d1 == std::numeric_limits<double>::infinity())
)
{
printf("\n");
}
}
fRes = Parser.Eval(vals);
StartTimer();
for (int j = 0; j < iCount; ++j)
{
fSum += Parser.Eval(vals);
std::swap(vals[0], vals[1]);
std::swap(vals[3], vals[4]);
}
StopTimer(fRes, fSum, iCount);
}
return m_fTime1;
}
