[Cuchulainn]

Ah great.
D

[zuluman]

i have now built the code using vc++ 2008 express.

Thanks

[Cuchulainn]

Please send me your source code, Thansks

Again, which compile are you using?

[zuluman]

I am still getting the compiler error:
:\datasim\module2\sourcecode\TestVectorSpace.cpp(55) : fatal error C1001: INTERNAL COMPILER ERROR

(compiler file 'msc1.cpp', line 2701)

Please choose the Technical Support command on the Visual C++

Help menu, or open the Technical Support help file for more information


----------------------------------------
No, I have not upgraded to VC 2005 express.
I'll do that and re-run.

[Cuchulainn]

What is the problem? Do you get a compile error?

Have you upgraded from VS 2003 to VS2005 Express??!

[zuluman]

I am still stuck on this problem.
I have enclosed some more code snippets to shed some light.
-----------------------------------------
//shorten version of the header file
template<typename Type, int N> class VectorSpace



{

// ** Template member functions ** Premultiplication by a field value

template <typename F> VectorSpace<Type, N>

friend operator * (const F& scalar, const VectorSpace<Type, N>& pt);

};

-----------------------------------------------------
//relevant section of cpp file looks like this....

// Premultiplication by a field value

template <typename Type, int N, typename F> VectorSpace<Type, N>

operator * (const F& scalar, const VectorSpace<Type, N>& v)

{



VectorSpace<Type, N> result;



for (int i= v.MinIndex(); i <= v.MaxIndex(); ++i)

{
result[i] = (scalar * v[i]);
}

return result;
}
-----------------------------------------------------------------
//main looks something like this.......

int main()

{
const int N = 3;

VectorSpace<double, N> myArray;

for (int j = myArray.MinIndex(); j <= myArray.MaxIndex(); j++)

{

myArray[j] = double (j);

}



// This is the section of cold that the error points at

//*********************************************************

const double factor = 0.5;

VectorSpace<double, N> myArray4 = factor * myArray;

//********************************************************



return 0;

}
-----------------------------------------------------
does anyone have any ideas what i am doing wrong???

[Cuchulainn]

// Calling a template member function (operator)
double factor = 0.5;
VectorSpace<double, N> myArray4 = factor * myArray;

--------------------------------------------------------------------
I assume that because myArray4 and myArray have the same value of N,
the above assignment should be possible.

yes, in the assignment, Array4 must get the same size as that of Array. Then it should be fine, yes?

[zuluman]

Thanks.

The code below has been commented out in my code.
----------------------------------------------------------------
/* This code will not compile, no conversions between
the two different classes
const int N1 = 3;
const int N2 = 4;
VectorSpace<double, N1> ArrOne;
VectorSpace<double, N2> ArrTwo;
ArrOne = ArrTwo;
ArrTwo = ArrOne;
*/
---------------------------------------------------------------------


My code is only dependent on one value of N.

i.e const int N = 3;

VectorSpace<double, N> myArray;

for (int j = myArray.MinIndex(); j <= myArray.MaxIndex(); j++)
{
myArray[j] = double (j);
}


// Calling a template member function (operator)
double factor = 0.5;
VectorSpace<double, N> myArray4 = factor * myArray;

--------------------------------------------------------------------
I assume that because myArray4 and myArray have the same value of N,
the above assignment should be possible.

[Cuchulainn]

/* This code will not compile, no conversions between
the two different classes
const int N1 = 3;
const int N2 = 4;
VectorSpace<double, N1> ArrOne;
VectorSpace<double, N2> ArrTwo;
ArrOne = ArrTwo;
ArrTwo = ArrOne;
*/

Hi
YES, the compiler gives rightly an error because TWO different classes are generated (based on the N1 and N2). And in general, you cannot assign two objects of different classes.

Hope this helps

VS 2003 is OK bit 2005 express is much better. I advise downloading Express edition

[zuluman]

i) I am using microsoft visual studio .net 2003
--------------------------------
ii) below is the code for main

#include "VectorSpace.cpp"
#include "VectorSpaceMechanisms.cpp"
#include <iostream>
using namespace std;


int main()
{

const int N = 3;
VectorSpace<double, N> myArray;

// All elements in vector have the same value, 2.2
double value = 2.2;
VectorSpace<double, N> myArrayB(2.2);

for (int j = myArray.MinIndex(); j <= myArray.MaxIndex(); j++)
{
myArray[j] = double (j);
}

print(myArray);
print(myArrayB);

/* This code will not compile, no conversions between
the two different classes
const int N1 = 3;
const int N2 = 4;
VectorSpace<double, N1> ArrOne;
VectorSpace<double, N2> ArrTwo;
ArrOne = ArrTwo;
ArrTwo = ArrOne;
*/

VectorSpace<double, N> myArray1 = - myArray;
VectorSpace<double, N> myArray2 = myArray; // No other size works!!
VectorSpace<double, N> myArray3 = myArray2 - myArray;

print(myArray1);
print(myArray2);
print(myArray3);

// Calling a template member function (operator)
double factor = 0.5;
VectorSpace<double, N> myArray4 = factor * myArray;

print(myArray4);
double ip = myArray.innerProduct(myArray2);
cout << "Inner product: " << ip << endl;

VectorSpace<double, N> myArray5(myArray);
print(myArray5);

// Addition
double offset = 1.0;
myArray5 = myArray - offset; // try +
print(myArray5);

myArray5 = myArray - myArray; // try -
print(myArray5);

double cp = myArray.componentProduct();
cout << "Product: " << cp << endl;

return 0;
}

-------------------------------
iii) below is the relevant code in vectorspace.cpp

template <typename Type, int N, typename F> VectorSpace<Type, N>
operator * (const F& scalar, const VectorSpace<Type, N>& v)
{

VectorSpace<Type, N> result;

for (int i= v.MinIndex(); i <= v.MaxIndex(); ++i)
{

result[i] = (scalar * v[i]);

}

return result;
}

[Cuchulainn]

First of all, this is an easy-to-solve problem. Questions:

1. Are you using VC++ 6.0 (if so, you should download FREE Visual Studio Express)

2. Pls post the code of main() so that I can test it.

3. What is the value of N?

VectorSpace<double, N> myArray4 = factor * myArray;


Thanks

PS This nasty error message is caused in 99.999% of cases by a missing < , > or somehing like that!

[zuluman]

hi,
i am trying to put together code modules for module2, but i keep coming up with an error message when building it.

fatal error C1001: INTERNAL COMPILER ERROR
(compiler file 'msc1.cpp', line 2701)
Please choose the Technical Support command on the Visual C++
Help menu, or open the Technical Support help file for more information.

------------------------------------------------------------
The error seems to point at the following code
VectorSpace<double, N> myArray4 = factor * myArray;

-------------------------------------------------------
The code modules I am putting together come from Daniel Duffy's intro to c++ for fin engineers.

any ideas of what i may be doing wrong.

thanks