Library to solve matrix determinant c++
 

Hi, i'm looking for some library that provides solving matrix determinant. My matrix contains complex numbers (complex.h).
Please write me some hints

Re: Library to solve matrix determinant c++
 

Hint: google search using C++ matrix determinant. It provided 12,000 hits. One of them, probably early on in the list, probably/may have something to help.

Re: Library to solve matrix determinant c++
 

see...Cramers rule...then u can create your own library...

Re: Library to solve matrix determinant c++
 

For example, download free Matrix TCL Lite 1.13 by Techsoft:
http://www.techsoftpl.com/matrix/download.htm
(it's not a recommendation, I never use this library but it's compact and simple;) ).
Comment 5 lines of abs definitions in downloaded matrix.h:

/* Do that, you can't compile it with VC++ when <complex> included

#if ( defined(__BORLANDC__) || _MSC_VER ) && !defined( __GNUG__ ) 

inline float abs (float v) { return (float)fabs( v); } 

inline double abs (double v) { return fabs( v); } 

inline long double abs (long double v) { return fabsl( v); }

#endif

*/

Now

#include <complex>

using namespace std;

#include "matrix.h"



typedef complex<double> Complex;

typedef math::matrix<Complex>  CMat;



int main()

{

    CMat m(2,2);

    m(0,0) = Complex(0,1);

    m(0,1) = m(1,0) = 0.0;

    m(1,1) = Complex(0,1);



    cout << m.Det() << endl;

    

    return 0;

}

// prints (-1,0)

Read package manual in pro_doc directory...

Re: Library to solve matrix determinant c++
 

Cramer's rule is useful to fing solution of a system of linear equations, not solving determinant.

Thanks, that library is simple and solves determinants quickly :)