/usr/include/linbox/blackbox/frobenius.h is in liblinbox-dev 1.1.6~rc0-4.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 | /* linobx/blackbox/frobenuis.h
*
* Written by Austin Lobo <alobo@cis.udel.edu> and
* B.D. Saunders <saunders@cis.udel.edu>
* See COPYING
*/
#ifndef __FROBENIUS_H
#define __FROBENIUS_H
#include <linbox/blackbox/blackbox-interface.h>
#include "linbox/blackbox/companion.h"
#include "linbox/blackbox/direct-sum.h"
#include <vector>
namespace LinBox {
/// \ingroup blackbox
template <class _Field>
class Frobenius: public BlackboxInterface, public DirectSum<Companion<_Field> >
{
public:
Frobenius() { } // default constructor
/**
* Build a matrix in Frobenius form whose block sizes are
* specified by vlist, generated from random polynomials
* @param vlist diagonal-block sizes, positive ints in non-increasing order
*/
template <class VDegList>
Frobenius( const _Field &F, const VDegList &vlist)
{
}
/**
* Build a square, block-diagonal matrix as a direct sum of the companion
* matrices of the polynomials. The dimension is the sum of the degrees.
* @param pbegin iterator pointing to the start of a list of polynomials
* @param pend iterator pointing after end of a list of polynomials
*/
template <class PolyIterator>
Frobenius( const _Field &F, PolyIterator pbegin, PolyIterator pend) {
this->_VB.resize(pend - pbegin);
PolyIterator pp = pbegin;
typename std::vector<const Companion<_Field>* >::iterator vp;
this->m = 0;
this->n = 0;
for(vp = this->_VB.begin(); vp != this->_VB.end(); ++vp,++pp) {
*vp = new Companion<_Field>(F,*pp);
this->m += (*vp) -> rowdim();
this->n += (*vp) -> coldim();
}
}
~Frobenius() {
typename std::vector< const Companion<_Field>* >::iterator vp;
for(vp = this->_VB.begin(); vp != this->_VB.end(); ++vp)
delete (*vp);
}
template<typename _Tp1>
struct rebind
{ typedef Frobenius<_Tp1> other; };
}; // class Frobenius
}// Namespace LinBox
#endif
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