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- /* matrix/view_source.c
- *
- * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 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_matrix,view)
- FUNCTION (gsl_matrix, view_array) (QUALIFIER ATOMIC * array,
- const size_t n1, const size_t n2)
- {
- QUALIFIED_VIEW (_gsl_matrix,view) view = NULL_MATRIX_VIEW;
- if (n1 == 0)
- {
- GSL_ERROR_VAL ("matrix dimension n1 must be positive integer",
- GSL_EINVAL, view);
- }
- else if (n2 == 0)
- {
- GSL_ERROR_VAL ("matrix dimension n2 must be positive integer",
- GSL_EINVAL, view);
- }
- {
- TYPE(gsl_matrix) m = NULL_MATRIX;
- m.data = (ATOMIC *)array;
- m.size1 = n1;
- m.size2 = n2;
- m.tda = n2;
- m.block = 0;
- m.owner = 0;
- view.matrix = m;
- return view;
- }
- }
- QUALIFIED_VIEW (_gsl_matrix,view)
- FUNCTION(gsl_matrix, view_array_with_tda) (QUALIFIER ATOMIC * base,
- const size_t n1,
- const size_t n2,
- const size_t tda)
- {
- QUALIFIED_VIEW (_gsl_matrix,view) view = NULL_MATRIX_VIEW;
- if (n1 == 0)
- {
- GSL_ERROR_VAL ("matrix dimension n1 must be positive integer",
- GSL_EINVAL, view);
- }
- else if (n2 == 0)
- {
- GSL_ERROR_VAL ("matrix dimension n2 must be positive integer",
- GSL_EINVAL, view);
- }
- else if (n2 > tda)
- {
- GSL_ERROR_VAL ("matrix dimension n2 must not exceed tda",
- GSL_EINVAL, view);
- }
- {
- TYPE(gsl_matrix) m = NULL_MATRIX;
- m.data = (ATOMIC *)base;
- m.size1 = n1;
- m.size2 = n2;
- m.tda = tda;
- m.block = 0;
- m.owner = 0;
- view.matrix = m;
- return view;
- }
- }
- QUALIFIED_VIEW (_gsl_matrix,view)
- FUNCTION(gsl_matrix, view_vector) (QUALIFIED_TYPE(gsl_vector) * v,
- const size_t n1,
- const size_t n2)
- {
- QUALIFIED_VIEW (_gsl_matrix,view) view = NULL_MATRIX_VIEW;
- if (n1 == 0)
- {
- GSL_ERROR_VAL ("matrix dimension n1 must be positive integer",
- GSL_EINVAL, view);
- }
- else if (n2 == 0)
- {
- GSL_ERROR_VAL ("matrix dimension n2 must be positive integer",
- GSL_EINVAL, view);
- }
- else if (v->stride != 1)
- {
- GSL_ERROR_VAL ("vector must have unit stride",
- GSL_EINVAL, view);
- }
- else if (n1 * n2 > v->size)
- {
- GSL_ERROR_VAL ("matrix size exceeds size of original",
- GSL_EINVAL, view);
- }
- {
- TYPE(gsl_matrix) m = NULL_MATRIX;
- m.data = v->data;
- m.size1 = n1;
- m.size2 = n2;
- m.tda = n2;
- m.block = v->block;
- m.owner = 0;
- view.matrix = m;
- return view;
- }
- }
- QUALIFIED_VIEW (_gsl_matrix,view)
- FUNCTION(gsl_matrix, view_vector_with_tda) (QUALIFIED_TYPE(gsl_vector) * v,
- const size_t n1,
- const size_t n2,
- const size_t tda)
- {
- QUALIFIED_VIEW (_gsl_matrix,view) view = NULL_MATRIX_VIEW;
- if (n1 == 0)
- {
- GSL_ERROR_VAL ("matrix dimension n1 must be positive integer",
- GSL_EINVAL, view);
- }
- else if (n2 == 0)
- {
- GSL_ERROR_VAL ("matrix dimension n2 must be positive integer",
- GSL_EINVAL, view);
- }
- else if (v->stride != 1)
- {
- GSL_ERROR_VAL ("vector must have unit stride",
- GSL_EINVAL, view);
- }
- else if (n2 > tda)
- {
- GSL_ERROR_VAL ("matrix dimension n2 must not exceed tda",
- GSL_EINVAL, view);
- }
- else if (n1 * tda > v->size)
- {
- GSL_ERROR_VAL ("matrix size exceeds size of original",
- GSL_EINVAL, view);
- }
- {
- TYPE(gsl_matrix) m = NULL_MATRIX;
- m.data = v->data;
- m.size1 = n1;
- m.size2 = n2;
- m.tda = tda;
- m.block = v->block;
- m.owner = 0;
- view.matrix = m;
- return view;
- }
- }
- #ifdef JUNK
- int
- FUNCTION (gsl_matrix, view_from_matrix) (TYPE(gsl_matrix) * m,
- TYPE(gsl_matrix) * mm,
- const size_t k1,
- const size_t k2,
- const size_t n1,
- const size_t n2)
- {
- if (n1 == 0)
- {
- GSL_ERROR_VAL ("matrix dimension n1 must be positive integer",
- GSL_EINVAL, 0);
- }
- else if (n2 == 0)
- {
- GSL_ERROR_VAL ("matrix dimension n2 must be positive integer",
- GSL_EINVAL, 0);
- }
- else if (k1 + n1 > mm->size1)
- {
- GSL_ERROR_VAL ("submatrix dimension 1 exceeds size of original",
- GSL_EINVAL, 0);
- }
- else if (k2 + n2 > mm->size2)
- {
- GSL_ERROR_VAL ("submatrix dimension 2 exceeds size of original",
- GSL_EINVAL, 0);
- }
- m->data = mm->data + k1 * mm->tda + k2 ;
- m->size1 = n1;
- m->size2 = n2;
- m->tda = mm->tda;
- m->block = mm->block;
- m->owner = 0;
- return GSL_SUCCESS;
- }
- int
- FUNCTION (gsl_vector, view_row_from_matrix) (TYPE(gsl_vector) * v,
- TYPE(gsl_matrix) * m,
- const size_t i)
- {
- const size_t column_length = m->size1;
- if (i >= column_length)
- {
- GSL_ERROR ("row index is out of range", GSL_EINVAL);
- }
- if (v->block != 0)
- {
- GSL_ERROR ("vector already has memory allocated to it", GSL_ENOMEM);
- }
- v->data = m->data + MULTIPLICITY * i * m->tda ;
- v->size = m->size2;
- v->stride = 1;
- return GSL_SUCCESS;
- }
- int
- FUNCTION (gsl_vector, view_col_from_matrix) (TYPE(gsl_vector) * v,
- TYPE(gsl_matrix) * m,
- const size_t j)
- {
- const size_t row_length = m->size2;
- if (j >= row_length)
- {
- GSL_ERROR_VAL ("column index is out of range", GSL_EINVAL, 0);
- }
- if (v->block != 0)
- {
- GSL_ERROR ("vector already has memory allocated to it", GSL_ENOMEM);
- }
- v->data = m->data + MULTIPLICITY * j ;
- v->size = m->size1;
- v->stride = m->tda;
- return GSL_SUCCESS;
- }
- #endif /* JUNK */
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