RealIntegrator Class Reference

To integrate a real function of a real variable. More...

Public Member Functions
	RealIntegrator ()
	~RealIntegrator ()
double	integrate (const std::function< double(double)> &f, double lmin, double lmax)

Static Private Member Functions
static double	m_Cfunction (double x, void *p)

Private Attributes
gsl_function	m_gsl_f
gsl_integration_workspace *	m_workspace

Detailed Description

To integrate a real function of a real variable.

Definition at line 28 of file IntegratorGK.h.

Constructor & Destructor Documentation

RealIntegrator()

RealIntegrator::RealIntegrator

(

)

Definition at line 17 of file IntegratorGK.cpp.

    : m_gsl_f{m_Cfunction, nullptr}, m_workspace{gsl_integration_workspace_alloc(200)}
{
}

~RealIntegrator()

RealIntegrator::~RealIntegrator

(

)

Definition at line 22 of file IntegratorGK.cpp.

{
    gsl_integration_workspace_free(m_workspace);
}

References m_workspace.

Member Function Documentation

integrate()

double RealIntegrator::integrate	(	const std::function< double(double)> &	f,
		double	lmin,
		double	lmax
	)

Definition at line 27 of file IntegratorGK.cpp.

{
    m_gsl_f.params = (void*)&f;
    double result, error;
    gsl_integration_qag(&m_gsl_f, lmin, lmax, 1e-9, 1e-7, 200, 3, m_workspace, &result, &error);
    // TODO check error
    return result;
}

References m_gsl_f, and m_workspace.

Referenced by MisesFisherGaussPeakShape::evaluate(), MisesGaussPeakShape::evaluate(), InterferenceFunction2DSuperLattice::evaluate(), FTDistribution2DCone::evaluate(), InterferenceFunction2DLattice::iff_without_dw(), InterferenceFunction2DParaCrystal::iff_without_dw(), InterferenceFunctionFinite2DLattice::iff_without_dw(), InterferenceFunctionHardDisk::iff_without_dw(), and ComplexIntegrator::integrate().

m_Cfunction()

static double RealIntegrator::m_Cfunction ( double  x, void *  p  )

inlinestaticprivate

Definition at line 35 of file IntegratorGK.h.

    {
        return (*(const std::function<double(double)>*)(p))(x);
    };

Member Data Documentation

m_gsl_f

gsl_function RealIntegrator::m_gsl_f

private

Definition at line 39 of file IntegratorGK.h.

Referenced by integrate().

m_workspace

gsl_integration_workspace* RealIntegrator::m_workspace

private

Definition at line 40 of file IntegratorGK.h.

Referenced by ~RealIntegrator(), and integrate().

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The documentation for this class was generated from the following files:

• /home/www/ba/Base/Math/IntegratorGK.h
• /home/www/ba/Base/Math/IntegratorGK.cpp