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- /* matrix/rowcol_source.c
- *
- * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman, Brian Gough
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- QUALIFIED_VIEW(_gsl_vector,view)
- FUNCTION (gsl_matrix, row) (QUALIFIED_TYPE(gsl_matrix) * m, const size_t i)
- {
- QUALIFIED_VIEW(_gsl_vector,view) view = NULL_VECTOR_VIEW;
-
- if (i >= m->size1)
- {
- GSL_ERROR_VAL ("row index is out of range", GSL_EINVAL, view);
- }
-
- {
- TYPE(gsl_vector) v = NULL_VECTOR;
-
- v.data = m->data + i * MULTIPLICITY * m->tda;
- v.size = m->size2;
- v.stride = 1;
- v.block = m->block;
- v.owner = 0;
-
- ((VIEW(_gsl_vector, view) *)&view)->vector = v;
- return view;
- }
- }
-
- QUALIFIED_VIEW(_gsl_vector,view)
- FUNCTION (gsl_matrix, column) (QUALIFIED_TYPE(gsl_matrix) * m, const size_t j)
- {
- QUALIFIED_VIEW(_gsl_vector,view) view = NULL_VECTOR_VIEW;
-
- if (j >= m->size2)
- {
- GSL_ERROR_VAL ("column index is out of range", GSL_EINVAL, view);
- }
-
- {
- TYPE(gsl_vector) v = NULL_VECTOR;
-
- v.data = m->data + j * MULTIPLICITY;
- v.size = m->size1;
- v.stride = m->tda;
- v.block = m->block;
- v.owner = 0;
-
- ((VIEW(_gsl_vector, view) *)&view)->vector = v;
- return view;
- }
- }
-
- QUALIFIED_VIEW(_gsl_vector,view)
- FUNCTION (gsl_matrix, diagonal) (QUALIFIED_TYPE(gsl_matrix) * m)
- {
- QUALIFIED_VIEW(_gsl_vector,view) view = NULL_VECTOR_VIEW;
-
- TYPE(gsl_vector) v = NULL_VECTOR;
- v.data = m->data;
- v.size = GSL_MIN(m->size1,m->size2);
- v.stride = m->tda + 1;
- v.block = m->block;
- v.owner = 0;
-
- ((VIEW(_gsl_vector, view) *)&view)->vector = v;
- return view;
- }
-
- QUALIFIED_VIEW(_gsl_vector,view)
- FUNCTION (gsl_matrix, subdiagonal) (QUALIFIED_TYPE(gsl_matrix) * m,
- const size_t k)
- {
- QUALIFIED_VIEW(_gsl_vector,view) view = NULL_VECTOR_VIEW;
-
- if (k >= m->size1)
- {
- GSL_ERROR_VAL ("subdiagonal index is out of range", GSL_EINVAL, view);
- }
-
- {
- TYPE(gsl_vector) v = NULL_VECTOR;
-
- v.data = m->data + k * MULTIPLICITY * m->tda;
- v.size = GSL_MIN(m->size1 - k, m->size2);
- v.stride = m->tda + 1;
- v.block = m->block;
- v.owner = 0;
-
- ((VIEW(_gsl_vector, view) *)&view)->vector = v;
- return view;
- }
- }
-
- QUALIFIED_VIEW(_gsl_vector,view)
- FUNCTION (gsl_matrix, superdiagonal) (QUALIFIED_TYPE(gsl_matrix) * m,
- const size_t k)
- {
- QUALIFIED_VIEW(_gsl_vector,view) view = NULL_VECTOR_VIEW;
-
-
- if (k >= m->size2)
- {
- GSL_ERROR_VAL ("column index is out of range", GSL_EINVAL, view);
- }
-
- {
- TYPE(gsl_vector) v = NULL_VECTOR;
-
- v.data = m->data + k * MULTIPLICITY;
- v.size = GSL_MIN(m->size1, m->size2 - k);
- v.stride = m->tda + 1;
- v.block = m->block;
- v.owner = 0;
-
- ((VIEW(_gsl_vector, view) *)&view)->vector = v;
- return view;
- }
- }
-
-