/usr/include/linbox/algorithms/rational-solver-adaptive.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 | /*
* Written by Zhendong Wan <wan@mail.eecis.udel.edu>
* Time-stamp: <12 Mar 07 19:45:32 Jean-Guillaume.Dumas@imag.fr>
*/
#ifndef __LINBOX_RATIONAL_SOLVER_ADAPTIVE_H
#define __LINBOX_RATIONAL_SOLVER_ADAPTIVE_H
#include <linbox/field/modular-int32.h>
#include <linbox/algorithms/rational-solver.h>
#include <linbox/randiter/random-prime.h>
#include <linbox/blackbox/dense.h>
namespace LinBox {
// Generic non-numerical solver requires conversion of the vector
template<class IRing, class OutVector, class InVector>
struct RationalSolverAdaptiveClass {
static SolverReturnStatus solveNonsingular(OutVector& num, typename IRing::Element& den, const DenseMatrix<IRing>& M, const InVector& b) {
linbox_check ((M. rowdim() == M. coldim()) && (b.size() == M.rowdim()) && (num. size() ==M.coldim()));
typedef Modular<int32> Field;
RationalSolver<IRing, Field, RandomPrimeIterator, NumericalTraits> numerical_solver;
SolverReturnStatus ret;
ret = numerical_solver. solve(num, den, M, b);
if (ret != SS_OK) {
RationalSolver<IRing, Field, RandomPrimeIterator> solver;
std::vector<typename IRing::Element> Ib; Ib.reserve(b.size());
typename IRing::Element tmp;
for(typename InVector::const_iterator biter = b.begin();
biter != b.end();
++biter)
Ib.push_back( M.field().init(tmp, *biter) );
ret = solver. solve(num, den, M, Ib);
}
return ret;
}
};
// Specialization when the vector is already over the ring
template<class IRing, class OutVector, template<typename T> class Container>
struct RationalSolverAdaptiveClass<IRing, OutVector, Container<typename IRing::Element> > {
static SolverReturnStatus solveNonsingular(OutVector& num, typename IRing::Element& den, const DenseMatrix<IRing>& M, const Container<typename IRing::Element> & b) {
linbox_check ((M. rowdim() == M. coldim()) && (b.size() == M.rowdim()) && (num. size() ==M.coldim()));
typedef Modular<int32> Field;
RationalSolver<IRing, Field, RandomPrimeIterator, NumericalTraits> numerical_solver;
SolverReturnStatus ret;
ret = numerical_solver. solve(num, den, M, b);
if (ret != SS_OK) {
RationalSolver<IRing, Field, RandomPrimeIterator> solver;
ret = solver. solve(num, den, M, b);
}
return ret;
}
};
class RationalSolverAdaptive {
public:
template<class IRing, class OutVector, class InVector>
static SolverReturnStatus solveNonsingular(OutVector& num, typename IRing::Element& den, const DenseMatrix<IRing>& M, const InVector& b) {
return RationalSolverAdaptiveClass<IRing,OutVector,InVector>::solveNonsingular(num, den, M, b);
}
};
}
#endif
|