Vec3DSpeedTest.cpp File Reference

#include <iostream>
#include "Math/Vector.h"
#include "Math/Matrix.h"
#include "MercuryTime.h"

Go to the source code of this file.

Functions
Mdouble	passByReference (Vec3D &v)
Mdouble	passByConstReference (const Vec3D &v)
Mdouble	passByPointer (Vec3D *v)
Mdouble	passByValue (Vec3D v)
Mdouble	passByReference (Matrix3D &v)
Mdouble	passByConstReference (const Matrix3D &v)
Mdouble	passByPointer (Matrix3D *v)
Mdouble	passByValue (Matrix3D v)
void	testVec3D (unsigned int n)
void	testMatrix3D (unsigned int n)
int	main ()

Function Documentation

int main

(

)

Definition at line 151 of file Vec3DSpeedTest.cpp.

References testMatrix3D(), and testVec3D().

{
    unsigned int n = 1e8;
    testVec3D(n);
    testMatrix3D(n);
    return 0;
}

Mdouble passByConstReference

(

const Vec3D &

v

)

Definition at line 38 of file Vec3DSpeedTest.cpp.

References Vec3D::X.

Referenced by testMatrix3D(), and testVec3D().

{
    return v.X;
}

Mdouble passByConstReference

(

const Matrix3D &

v

)

Definition at line 58 of file Vec3DSpeedTest.cpp.

References Matrix3D::XX.

{
    return v.XX;
}

Mdouble passByPointer

(

Vec3D *

v

)

Definition at line 43 of file Vec3DSpeedTest.cpp.

References Vec3D::X.

Referenced by testMatrix3D(), and testVec3D().

{
    return v->X;
}

Mdouble passByPointer

(

Matrix3D *

v

)

Definition at line 63 of file Vec3DSpeedTest.cpp.

References Matrix3D::XX.

{
    return v->XX;
}

Mdouble passByReference

(

Vec3D &

v

)

Definition at line 33 of file Vec3DSpeedTest.cpp.

References Vec3D::X.

Referenced by testMatrix3D(), and testVec3D().

{
    return v.X;
}

Mdouble passByReference

(

Matrix3D &

v

)

Definition at line 53 of file Vec3DSpeedTest.cpp.

References Matrix3D::XX.

{
    return v.XX;
}

Mdouble passByValue

(

Vec3D

v

)

Definition at line 48 of file Vec3DSpeedTest.cpp.

References Vec3D::X.

Referenced by testMatrix3D(), and testVec3D().

{
    return v.X;
}

Mdouble passByValue

(

Matrix3D

v

)

Definition at line 68 of file Vec3DSpeedTest.cpp.

References Matrix3D::XX.

{
    return v.XX;
}

void testMatrix3D

(

unsigned int

n

)

Definition at line 112 of file Vec3DSpeedTest.cpp.

References passByConstReference(), passByPointer(), passByReference(), passByValue(), Time::tic(), and Time::toc().

Referenced by main().

{
    std::cout << "testing Matrix3D performance" << std::endl;

    Matrix3D v={1,0,0,0,0,0,0,0,0};
    Mdouble x=0;
    
    Time time;
    time.tic();
    for (unsigned int i = 0; i < n; i++)
    {
        x+=passByReference(v);
    }
    std::cout << "passByReference      clocks: " << time.toc()*CLOCKS_PER_SEC << std::endl;

    time.tic();
    for (unsigned int i = 0; i < n; i++)
    {
        x+=passByConstReference(v);
    }
    std::cout << "passByConstReference clocks: " << time.toc()*CLOCKS_PER_SEC << std::endl;

    Matrix3D* p = &v;
    time.tic();
    for (unsigned int i = 0; i < n; i++)
    {
        x+=passByPointer(p);
    }
    std::cout << "passByPointer        clocks: " << time.toc()*CLOCKS_PER_SEC << std::endl;
    
    time.tic();
    for (unsigned int i = 0; i < n; i++)
    {
        x+=passByValue(v);
    }
    std::cout << "passByValue          clocks: " << time.toc()*CLOCKS_PER_SEC << std::endl;
    std::cout << x << std::endl;
}

void testVec3D

(

unsigned int

n

)

Definition at line 73 of file Vec3DSpeedTest.cpp.

References passByConstReference(), passByPointer(), passByReference(), passByValue(), Time::tic(), and Time::toc().

Referenced by main().

{
    std::cout << "testing Vec3D performance" << std::endl;
    
    Vec3D v={1,0,0};
    Mdouble x=0;
    
    Time time;
    time.tic();
    for (unsigned int i = 0; i < n; i++)
    {
        x+=passByReference(v);
    }
    std::cout << "passByReference      clocks: " << time.toc()*CLOCKS_PER_SEC << std::endl;

    time.tic();
    for (unsigned int i = 0; i < n; i++)
    {
        x+=passByConstReference(v);
    }
    std::cout << "passByConstReference clocks: " << time.toc()*CLOCKS_PER_SEC << std::endl;

    Vec3D* p = &v;
    time.tic();
    for (unsigned int i = 0; i < n; i++)
    {
        x+=passByPointer(p);
    }
    std::cout << "passByPointer        clocks: " << time.toc()*CLOCKS_PER_SEC << std::endl;
    
    time.tic();
    for (unsigned int i = 0; i < n; i++)
    {
        x+=passByValue(v);
    }
    std::cout << "passByValue          clocks: " << time.toc()*CLOCKS_PER_SEC << std::endl;
    std::cout << x << std::endl;
}