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- /* vector/init_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.
- */
- TYPE (gsl_vector) *
- FUNCTION (gsl_vector, alloc) (const size_t n)
- {
- TYPE (gsl_block) * block;
- TYPE (gsl_vector) * v;
- if (n == 0)
- {
- GSL_ERROR_VAL ("vector length n must be positive integer",
- GSL_EINVAL, 0);
- }
- v = (TYPE (gsl_vector) *) malloc (sizeof (TYPE (gsl_vector)));
- if (v == 0)
- {
- GSL_ERROR_VAL ("failed to allocate space for vector struct",
- GSL_ENOMEM, 0);
- }
- block = FUNCTION (gsl_block,alloc) (n);
- if (block == 0)
- {
- free (v) ;
- GSL_ERROR_VAL ("failed to allocate space for block",
- GSL_ENOMEM, 0);
- }
-
- v->data = block->data ;
- v->size = n;
- v->stride = 1;
- v->block = block;
- v->owner = 1;
- return v;
- }
- TYPE (gsl_vector) *
- FUNCTION (gsl_vector, calloc) (const size_t n)
- {
- size_t i;
- TYPE (gsl_vector) * v = FUNCTION (gsl_vector, alloc) (n);
- if (v == 0)
- return 0;
- /* initialize vector to zero */
- for (i = 0; i < MULTIPLICITY * n; i++)
- {
- v->data[i] = 0;
- }
- return v;
- }
- TYPE (gsl_vector) *
- FUNCTION (gsl_vector, alloc_from_block) (TYPE(gsl_block) * block,
- const size_t offset,
- const size_t n,
- const size_t stride)
- {
- TYPE (gsl_vector) * v;
- if (n == 0)
- {
- GSL_ERROR_VAL ("vector length n must be positive integer",
- GSL_EINVAL, 0);
- }
- if (stride == 0)
- {
- GSL_ERROR_VAL ("stride must be positive integer", GSL_EINVAL, 0);
- }
- if (block->size <= offset + (n - 1) * stride)
- {
- GSL_ERROR_VAL ("vector would extend past end of block", GSL_EINVAL, 0);
- }
- v = (TYPE (gsl_vector) *) malloc (sizeof (TYPE (gsl_vector)));
- if (v == 0)
- {
- GSL_ERROR_VAL ("failed to allocate space for vector struct",
- GSL_ENOMEM, 0);
- }
- v->data = block->data + MULTIPLICITY * offset ;
- v->size = n;
- v->stride = stride;
- v->block = block;
- v->owner = 0;
- return v;
- }
- TYPE (gsl_vector) *
- FUNCTION (gsl_vector, alloc_from_vector) (TYPE(gsl_vector) * w,
- const size_t offset,
- const size_t n,
- const size_t stride)
- {
- TYPE (gsl_vector) * v;
- if (n == 0)
- {
- GSL_ERROR_VAL ("vector length n must be positive integer",
- GSL_EINVAL, 0);
- }
- if (stride == 0)
- {
- GSL_ERROR_VAL ("stride must be positive integer", GSL_EINVAL, 0);
- }
- if (offset + (n - 1) * stride >= w->size)
- {
- GSL_ERROR_VAL ("vector would extend past end of block", GSL_EINVAL, 0);
- }
- v = (TYPE (gsl_vector) *) malloc (sizeof (TYPE (gsl_vector)));
- if (v == 0)
- {
- GSL_ERROR_VAL ("failed to allocate space for vector struct",
- GSL_ENOMEM, 0);
- }
- v->data = w->data + MULTIPLICITY * w->stride * offset ;
- v->size = n;
- v->stride = stride * w->stride;
- v->block = w->block;
- v->owner = 0;
- return v;
- }
- void
- FUNCTION (gsl_vector, free) (TYPE (gsl_vector) * v)
- {
- if (v->owner)
- {
- FUNCTION(gsl_block, free) (v->block) ;
- }
- free (v);
- }
- void
- FUNCTION (gsl_vector, set_all) (TYPE (gsl_vector) * v, BASE x)
- {
- ATOMIC * const data = v->data;
- const size_t n = v->size;
- const size_t stride = v->stride;
- size_t i;
- for (i = 0; i < n; i++)
- {
- *(BASE *) (data + MULTIPLICITY * i * stride) = x;
- }
- }
- void
- FUNCTION (gsl_vector, set_zero) (TYPE (gsl_vector) * v)
- {
- ATOMIC * const data = v->data;
- const size_t n = v->size;
- const size_t stride = v->stride;
- const BASE zero = ZERO ;
- size_t i;
- for (i = 0; i < n; i++)
- {
- *(BASE *) (data + MULTIPLICITY * i * stride) = zero;
- }
- }
- int
- FUNCTION (gsl_vector, set_basis) (TYPE (gsl_vector) * v, size_t i)
- {
- ATOMIC * const data = v->data;
- const size_t n = v->size;
- const size_t stride = v->stride;
- const BASE zero = ZERO ;
- const BASE one = ONE;
- size_t k;
- if (i >= n)
- {
- GSL_ERROR ("index out of range", GSL_EINVAL);
- }
- for (k = 0; k < n; k++)
- {
- *(BASE *) (data + MULTIPLICITY * k * stride) = zero;
- }
- *(BASE *) (data + MULTIPLICITY * i * stride) = one;
- return GSL_SUCCESS;
- }
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