/* movstat/movminmax.c
*
* Routines related to a moving window min/max
*
* Copyright (C) 2018 Patrick Alken
*
* 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.
*/
#include <config.h>
#include <stdlib.h>
#include <gsl/gsl_math.h>
#include <gsl/gsl_errno.h>
#include <gsl/gsl_movstat.h>
/*
gsl_movstat_minmax()
Apply minmax filter to input vector
Inputs: endtype - end point handling criteria
x - input vector, size n
y_min - output vector of minimum values, size n
y_max - output vector of maximum values, size n
w - workspace
*/
int
gsl_movstat_minmax(const gsl_movstat_end_t endtype, const gsl_vector * x, gsl_vector * y_min, gsl_vector * y_max, gsl_movstat_workspace * w)
{
int status = gsl_movstat_apply_accum(endtype, x, gsl_movstat_accum_minmax, NULL, y_min, y_max, w);
return status;
}
/*
gsl_movstat_min()
Apply minimum filter to input vector
Inputs: endtype - end point handling criteria
x - input vector, size n
y - output vector of minimum values, size n
w - workspace
*/
int
gsl_movstat_min(const gsl_movstat_end_t endtype, const gsl_vector * x, gsl_vector * y, gsl_movstat_workspace * w)
{
int status = gsl_movstat_apply_accum(endtype, x, gsl_movstat_accum_min, NULL, y, NULL, w);
return status;
}
/*
gsl_movstat_max()
Apply maximum filter to input vector
Inputs: endtype - end point handling criteria
x - input vector, size n
y - output vector of maximum values, size n
w - workspace
*/
int
gsl_movstat_max(const gsl_movstat_end_t endtype, const gsl_vector * x, gsl_vector * y, gsl_movstat_workspace * w)
{
int status = gsl_movstat_apply_accum(endtype, x, gsl_movstat_accum_max, NULL, y, NULL, w);
return status;
}