Integral1Test.cpp File Reference

Test file for the class NumericalDefiniteIntregral and Integral. More...

#include <cmath>
#include <cstdio>
#include "GaudiMath/Integral.h"
#include "GaudiMath/GaudiMath.h"
#include "GaudiKernel/SystemOfUnits.h"
#include "CLHEP/GenericFunctions/Sin.hh"
#include "CLHEP/GenericFunctions/Cos.hh"
#include "CLHEP/GenericFunctions/Gaussian.hh"

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Namespaces
	CLHEP

Functions
int	main ()

Detailed Description

Test file for the class NumericalDefiniteIntregral and Integral.

Date

2003-08-31

Author

Vanya BELYAEV Ivan..nosp@m.Bely.nosp@m.aev@i.nosp@m.tep..nosp@m.ru

Definition in file Integral1Test.cpp.

Function Documentation

int main

(

)

Definition at line 35 of file Integral1Test.cpp.

{

  std::cout <<
    " Test for numerical integration of Genfun::Sin(x) " << std::endl ;

  const GaudiMath::Function& mysin = Genfun::Sin();

  for( double x = 0 * Gaudi::Units::degree ;
       x <= 360 * Gaudi::Units::degree ;
       x += 15 * Gaudi::Units::degree ) {
    double value = GaudiMath::Integral ( mysin , 0. , x ) ;
    printf( "x=%8.3f deg; I(Sin)=%+.19f; ActErr=%+.19f;\n",
        x / Gaudi::Units::degree  , value , value-(1-cos(x)) );
  }

  const GaudiMath::Function& myfun = Genfun::Gaussian();

  std::cout
    << " integral from gauss1 =  "
    << GaudiMath::Integral( myfun , 0.0 , GaudiMath::Integration::Infinity )
    << "\n integral from gauss2 =  "
    << GaudiMath::Integral( myfun , GaudiMath::Integration::Infinity ,0.0  )
    << "\n integral from gauss3 =  "
    << GaudiMath::Integral( myfun                             ,
                            GaudiMath::Integration::Infinity  ,
                            GaudiMath::Integration::Infinity  )
    << "\n integral from gauss4 =  "
    << GaudiMath::Integral( myfun , GaudiMath::Integration::Infinity , 1.0  )
    << "\n integral from gauss5 =  "
    << GaudiMath::Integral( myfun , GaudiMath::Integration::Infinity , 4.0  )
    << "\n integral from gauss6 =  "
    << GaudiMath::Integral( myfun , GaudiMath::Integration::Infinity , 9.0  )
    << "\n integral from gauss7 =  "
    << GaudiMath::Integral( myfun , GaudiMath::Integration::Infinity , 16.0  )
    << "\n integral from gauss8 =  "
    << GaudiMath::Integral( myfun , GaudiMath::Integration::Infinity , 25.0  )
    << "\n";

}