1 /* vector/subvector_source.c
3 * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 Gerard Jungman, Brian Gough
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or (at
8 * your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 QUALIFIED_VIEW(_gsl_vector, view)
21 FUNCTION(gsl_vector, subvector) (QUALIFIED_TYPE(gsl_vector) * v, size_t offset, size_t n)
23 QUALIFIED_VIEW(_gsl_vector,view) view = NULL_VECTOR_VIEW;
27 GSL_ERROR_VAL ("vector length n must be positive integer",
31 if (offset + (n - 1) >= v->size)
33 GSL_ERROR_VAL ("view would extend past end of vector",
38 TYPE(gsl_vector) s = NULL_VECTOR;
40 s.data = v->data + MULTIPLICITY * v->stride * offset ;
51 QUALIFIED_VIEW(_gsl_vector, view)
52 FUNCTION(gsl_vector, subvector_with_stride) (QUALIFIED_TYPE(gsl_vector) * v, size_t offset, size_t stride, size_t n)
54 QUALIFIED_VIEW(_gsl_vector,view) view = NULL_VECTOR_VIEW;
58 GSL_ERROR_VAL ("vector length n must be positive integer",
64 GSL_ERROR_VAL ("stride must be positive integer",
68 if (offset + (n - 1) * stride >= v->size)
70 GSL_ERROR_VAL ("view would extend past end of vector",
75 TYPE(gsl_vector) s = NULL_VECTOR;
77 s.data = v->data + MULTIPLICITY * v->stride * offset ;
79 s.stride = v->stride * stride;