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- /* matrix/swap_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.
- */
- int
- FUNCTION (gsl_matrix, swap_rows) (TYPE (gsl_matrix) * m,
- const size_t i, const size_t j)
- {
- const size_t size1 = m->size1;
- const size_t size2 = m->size2;
- if (i >= size1)
- {
- GSL_ERROR ("first row index is out of range", GSL_EINVAL);
- }
- if (j >= size1)
- {
- GSL_ERROR ("second row index is out of range", GSL_EINVAL);
- }
- if (i != j)
- {
- ATOMIC *row1 = m->data + MULTIPLICITY * i * m->tda;
- ATOMIC *row2 = m->data + MULTIPLICITY * j * m->tda;
-
- size_t k;
-
- for (k = 0; k < MULTIPLICITY * size2; k++)
- {
- ATOMIC tmp = row1[k] ;
- row1[k] = row2[k] ;
- row2[k] = tmp ;
- }
- }
- return GSL_SUCCESS;
- }
- int
- FUNCTION (gsl_matrix, swap_columns) (TYPE (gsl_matrix) * m,
- const size_t i, const size_t j)
- {
- const size_t size1 = m->size1;
- const size_t size2 = m->size2;
- if (i >= size2)
- {
- GSL_ERROR ("first column index is out of range", GSL_EINVAL);
- }
- if (j >= size2)
- {
- GSL_ERROR ("second column index is out of range", GSL_EINVAL);
- }
- if (i != j)
- {
- ATOMIC *col1 = m->data + MULTIPLICITY * i;
- ATOMIC *col2 = m->data + MULTIPLICITY * j;
-
- size_t p;
-
- for (p = 0; p < size1; p++)
- {
- size_t k;
- size_t n = p * MULTIPLICITY * m->tda;
-
- for (k = 0; k < MULTIPLICITY; k++)
- {
- ATOMIC tmp = col1[n+k] ;
- col1[n+k] = col2[n+k] ;
- col2[n+k] = tmp ;
- }
- }
- }
- return GSL_SUCCESS;
- }
- int
- FUNCTION (gsl_matrix, swap_rowcol) (TYPE (gsl_matrix) * m,
- const size_t i, const size_t j)
- {
- const size_t size1 = m->size1;
- const size_t size2 = m->size2;
- if (size1 != size2)
- {
- GSL_ERROR ("matrix must be square to swap row and column", GSL_ENOTSQR);
- }
- if (i >= size1)
- {
- GSL_ERROR ("row index is out of range", GSL_EINVAL);
- }
- if (j >= size2)
- {
- GSL_ERROR ("column index is out of range", GSL_EINVAL);
- }
- {
- ATOMIC *row = m->data + MULTIPLICITY * i * m->tda;
- ATOMIC *col = m->data + MULTIPLICITY * j;
-
- size_t p;
-
- for (p = 0; p < size1; p++)
- {
- size_t k;
- size_t r = p * MULTIPLICITY;
- size_t c = p * MULTIPLICITY * m->tda;
-
- for (k = 0; k < MULTIPLICITY; k++)
- {
- ATOMIC tmp = col[c+k] ;
- col[c+k] = row[r+k] ;
- row[r+k] = tmp ;
- }
- }
- }
- return GSL_SUCCESS;
- }
- int
- FUNCTION (gsl_matrix, transpose) (TYPE (gsl_matrix) * m)
- {
- const size_t size1 = m->size1;
- const size_t size2 = m->size2;
- size_t i, j, k;
- if (size1 != size2)
- {
- GSL_ERROR ("matrix must be square to take transpose", GSL_ENOTSQR);
- }
- for (i = 0; i < size1; i++)
- {
- for (j = i + 1 ; j < size2 ; j++)
- {
- for (k = 0; k < MULTIPLICITY; k++)
- {
- size_t e1 = (i * m->tda + j) * MULTIPLICITY + k ;
- size_t e2 = (j * m->tda + i) * MULTIPLICITY + k ;
- {
- ATOMIC tmp = m->data[e1] ;
- m->data[e1] = m->data[e2] ;
- m->data[e2] = tmp ;
- }
- }
- }
- }
- return GSL_SUCCESS;
- }
- int
- FUNCTION (gsl_matrix, transpose_memcpy) (TYPE (gsl_matrix) * dest,
- const TYPE (gsl_matrix) * src)
- {
- const size_t src_size1 = src->size1;
- const size_t src_size2 = src->size2;
- const size_t dest_size1 = dest->size1;
- const size_t dest_size2 = dest->size2;
- size_t i, j, k;
- if (dest_size2 != src_size1 || dest_size1 != src_size2)
- {
- GSL_ERROR ("dimensions of dest matrix must be transpose of src matrix",
- GSL_EBADLEN);
- }
- for (i = 0; i < dest_size1; i++)
- {
- for (j = 0 ; j < dest_size2; j++)
- {
- for (k = 0; k < MULTIPLICITY; k++)
- {
- size_t e1 = (i * dest->tda + j) * MULTIPLICITY + k ;
- size_t e2 = (j * src->tda + i) * MULTIPLICITY + k ;
- dest->data[e1] = src->data[e2] ;
- }
- }
- }
- return GSL_SUCCESS;
- }
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