#include <octave/oct.h>
#include <octave/xdiv.h>
#ifdef STANDALONE
ColumnVector Fmtt_implicit ( ColumnVector &x,
ColumnVector &dx,
Matrix &AA,
ColumnVector &AAx,
const double &t,
const int &Nx,
const ColumnVector &openx)
{
#else // !STANDALONE
DEFUN_DLD (mtt_implicit, args, ,
"implicit integration method")
{
#ifdef OCTAVE_DEV
static ColumnVector x = args(0).column_vector_value ();
const ColumnVector dx = args(1).column_vector_value ();
const Matrix AA = args(2).matrix_value ();
const ColumnVector AAx = args(3).column_vector_value ();
const double t = args(4).double_value ();
const int Nx = (int) (args(5).double_value ());
const ColumnVector openx = args(6).column_vector_value ();
#else // !OCTAVE_DEV
static ColumnVector x = args(0).vector_value ();
const ColumnVector dx = args(1).vector_value ();
const Matrix AA = args(2).matrix_value ();
const ColumnVector AAx = args(3).vector_value ();
const double t = args(4).double_value ();
const int Nx = (int) (args(5).double_value ());
const ColumnVector openx = args(6).vector_value ();
#endif // OCTAVE_DEV
#endif // STANDALONE
register int row, col;
for (row = 0; row < Nx; row++)
{
if (0 != openx (row))
{
AAx (row) = 0.0;
dx (row) = 0.0;
#ifndef RISKLEAKS
for (col = 0; col < Nx; col++)
{
AA (row,col) = 0.0;
AA (col,row) = 0.0;
}
#endif
}
}
x = static_cast<ColumnVector> (xleftdiv (AA, static_cast<Matrix>(AAx + dx * t)));
for (row = 0; row < Nx; row++)
{
if (0 != openx (row))
{
x (row) = 0.0;
}
}
#ifdef STANDALONE
return x;
#else // !STANDALONE
return octave_value (x);
#endif // STANDALONE
}