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/* vector/oper_source.c
*
* Copyright (C) 1996, 1997, 1998, 1999, 2000 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
int
FUNCTION(gsl_vector, add) (TYPE(gsl_vector) * a, const TYPE(gsl_vector) * b)
{
const size_t N = a->size;
if (b->size != N)
{
GSL_ERROR ("vectors must have same length", GSL_EBADLEN);
}
else
{
const size_t stride_a = a->stride;
const size_t stride_b = b->stride;
size_t i;
for (i = 0; i < N; i++)
{
a->data[i * stride_a] += b->data[i * stride_b];
}
return GSL_SUCCESS;
}
}
int
FUNCTION(gsl_vector, sub) (TYPE(gsl_vector) * a, const TYPE(gsl_vector) * b)
{
const size_t N = a->size;
if (b->size != N)
{
GSL_ERROR ("vectors must have same length", GSL_EBADLEN);
}
else
{
const size_t stride_a = a->stride;
const size_t stride_b = b->stride;
size_t i;
for (i = 0; i < N; i++)
{
a->data[i * stride_a] -= b->data[i * stride_b];
}
return GSL_SUCCESS;
}
}
int
FUNCTION(gsl_vector, mul) (TYPE(gsl_vector) * a, const TYPE(gsl_vector) * b)
{
const size_t N = a->size;
if (b->size != N)
{
GSL_ERROR ("vectors must have same length", GSL_EBADLEN);
}
else
{
const size_t stride_a = a->stride;
const size_t stride_b = b->stride;
size_t i;
for (i = 0; i < N; i++)
{
a->data[i * stride_a] *= b->data[i * stride_b];
}
return GSL_SUCCESS;
}
}
int
FUNCTION(gsl_vector, div) (TYPE(gsl_vector) * a, const TYPE(gsl_vector) * b)
{
const size_t N = a->size;
if (b->size != N)
{
GSL_ERROR ("vectors must have same length", GSL_EBADLEN);
}
else
{
const size_t stride_a = a->stride;
const size_t stride_b = b->stride;
size_t i;
for (i = 0; i < N; i++)
{
a->data[i * stride_a] /= b->data[i * stride_b];
}
return GSL_SUCCESS;
}
}
int
FUNCTION(gsl_vector, scale) (TYPE(gsl_vector) * a, const double x)
{
const size_t N = a->size;
const size_t stride = a->stride;
size_t i;
for (i = 0; i < N; i++)
{
a->data[i * stride] *= x;
}
return GSL_SUCCESS;
}
int
FUNCTION(gsl_vector, add_constant) (TYPE(gsl_vector) * a, const double x)
{
const size_t N = a->size;
const size_t stride = a->stride;
size_t i;
for (i = 0; i < N; i++)
{
a->data[i * stride] += x;
}
return GSL_SUCCESS;
}
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