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- /* matrix/init_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.
- */
-
- TYPE (gsl_matrix) *
- FUNCTION (gsl_matrix, alloc) (const size_t n1, const size_t n2)
- {
- TYPE (gsl_block) * block;
- TYPE (gsl_matrix) * m;
-
- 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);
- }
-
- m = (TYPE (gsl_matrix) *) malloc (sizeof (TYPE (gsl_matrix)));
-
- if (m == 0)
- {
- GSL_ERROR_VAL ("failed to allocate space for matrix struct",
- GSL_ENOMEM, 0);
- }
-
- /* FIXME: n1*n2 could overflow for large dimensions */
-
- block = FUNCTION(gsl_block, alloc) (n1 * n2) ;
-
- if (block == 0)
- {
- GSL_ERROR_VAL ("failed to allocate space for block",
- GSL_ENOMEM, 0);
- }
-
- m->data = block->data;
- m->size1 = n1;
- m->size2 = n2;
- m->tda = n2;
- m->block = block;
- m->owner = 1;
-
- return m;
- }
-
- TYPE (gsl_matrix) *
- FUNCTION (gsl_matrix, calloc) (const size_t n1, const size_t n2)
- {
- size_t i;
-
- TYPE (gsl_matrix) * m = FUNCTION (gsl_matrix, alloc) (n1, n2);
-
- if (m == 0)
- return 0;
-
- /* initialize matrix to zero */
-
- for (i = 0; i < MULTIPLICITY * n1 * n2; i++)
- {
- m->data[i] = 0;
- }
-
- return m;
- }
-
- TYPE (gsl_matrix) *
- FUNCTION (gsl_matrix, alloc_from_block) (TYPE(gsl_block) * block,
- const size_t offset,
- const size_t n1,
- const size_t n2,
- const size_t d2)
- {
- TYPE (gsl_matrix) * m;
-
- 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 (d2 < n2)
- {
- GSL_ERROR_VAL ("matrix dimension d2 must be greater than n2",
- GSL_EINVAL, 0);
- }
- else if (block->size < offset + n1 * d2)
- {
- GSL_ERROR_VAL ("matrix size exceeds available block size",
- GSL_EINVAL, 0);
- }
-
- m = (TYPE (gsl_matrix) *) malloc (sizeof (TYPE (gsl_matrix)));
-
- if (m == 0)
- {
- GSL_ERROR_VAL ("failed to allocate space for matrix struct",
- GSL_ENOMEM, 0);
- }
-
- m->data = block->data + MULTIPLICITY * offset;
- m->size1 = n1;
- m->size2 = n2;
- m->tda = d2;
- m->block = block;
- m->owner = 0;
-
- return m;
- }
-
-
- TYPE (gsl_matrix) *
- FUNCTION (gsl_matrix, alloc_from_matrix) (TYPE(gsl_matrix) * mm,
- const size_t k1,
- const size_t k2,
- const size_t n1,
- const size_t n2)
- {
- TYPE (gsl_matrix) * m;
-
- 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 = (TYPE (gsl_matrix) *) malloc (sizeof (TYPE (gsl_matrix)));
-
- if (m == 0)
- {
- GSL_ERROR_VAL ("failed to allocate space for matrix struct",
- GSL_ENOMEM, 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 m;
- }
-
- void
- FUNCTION (gsl_matrix, free) (TYPE (gsl_matrix) * m)
- {
- if (m->owner)
- {
- FUNCTION(gsl_block, free) (m->block);
- }
-
- free (m);
- }
- void
- FUNCTION (gsl_matrix, set_identity) (TYPE (gsl_matrix) * m)
- {
- size_t i, j;
- ATOMIC * const data = m->data;
- const size_t p = m->size1 ;
- const size_t q = m->size2 ;
- const size_t tda = m->tda ;
-
- const BASE zero = ZERO;
- const BASE one = ONE;
-
- for (i = 0; i < p; i++)
- {
- for (j = 0; j < q; j++)
- {
- *(BASE *) (data + MULTIPLICITY * (i * tda + j)) = ((i == j) ? one : zero);
- }
- }
- }
-
- void
- FUNCTION (gsl_matrix, set_zero) (TYPE (gsl_matrix) * m)
- {
- size_t i, j;
- ATOMIC * const data = m->data;
- const size_t p = m->size1 ;
- const size_t q = m->size2 ;
- const size_t tda = m->tda ;
-
- const BASE zero = ZERO;
-
- for (i = 0; i < p; i++)
- {
- for (j = 0; j < q; j++)
- {
- *(BASE *) (data + MULTIPLICITY * (i * tda + j)) = zero;
- }
- }
- }
-
- void
- FUNCTION (gsl_matrix, set_all) (TYPE (gsl_matrix) * m, BASE x)
- {
- size_t i, j;
- ATOMIC * const data = m->data;
- const size_t p = m->size1 ;
- const size_t q = m->size2 ;
- const size_t tda = m->tda ;
-
- for (i = 0; i < p; i++)
- {
- for (j = 0; j < q; j++)
- {
- *(BASE *) (data + MULTIPLICITY * (i * tda + j)) = x;
- }
- }
- }
-
-