123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200 |
- /* matrix/rowcol_source.c
- *
- * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 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 3 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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.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.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.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.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.vector = v;
- return view;
- }
- }
- QUALIFIED_VIEW(_gsl_vector,view)
- FUNCTION (gsl_matrix, subrow) (QUALIFIED_TYPE(gsl_matrix) * m, const size_t i, const size_t offset, const size_t n)
- {
- 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);
- }
- else if (n == 0)
- {
- GSL_ERROR_VAL ("vector length n must be positive integer",
- GSL_EINVAL, view);
- }
- else if (offset + n > m->size1)
- {
- GSL_ERROR_VAL ("dimension n overflows matrix", GSL_EINVAL, view);
- }
-
- {
- TYPE(gsl_vector) v = NULL_VECTOR;
-
- v.data = m->data + MULTIPLICITY * (i * m->tda + offset);
- v.size = n;
- v.stride = 1;
- v.block = m->block;
- v.owner = 0;
-
- view.vector = v;
- return view;
- }
- }
- QUALIFIED_VIEW(_gsl_vector,view)
- FUNCTION (gsl_matrix, subcolumn) (QUALIFIED_TYPE(gsl_matrix) * m, const size_t j, const size_t offset, const size_t n)
- {
- 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);
- }
- else if (n == 0)
- {
- GSL_ERROR_VAL ("vector length n must be positive integer",
- GSL_EINVAL, view);
- }
- else if (offset + n > m->size2)
- {
- GSL_ERROR_VAL ("dimension n overflows matrix", GSL_EINVAL, view);
- }
- {
- TYPE(gsl_vector) v = NULL_VECTOR;
-
- v.data = m->data + MULTIPLICITY * (offset * m->tda + j);
- v.size = n;
- v.stride = m->tda;
- v.block = m->block;
- v.owner = 0;
- view.vector = v;
- return view;
- }
- }
|