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/* movstat/movminmax.c
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*
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* Routines related to a moving window min/max
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*
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* Copyright (C) 2018 Patrick Alken
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <config.h>
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#include <stdlib.h>
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#include <gsl/gsl_math.h>
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#include <gsl/gsl_errno.h>
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#include <gsl/gsl_movstat.h>
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/*
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gsl_movstat_minmax()
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Apply minmax filter to input vector
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Inputs: endtype - end point handling criteria
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x - input vector, size n
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y_min - output vector of minimum values, size n
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y_max - output vector of maximum values, size n
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w - workspace
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*/
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int
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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)
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{
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int status = gsl_movstat_apply_accum(endtype, x, gsl_movstat_accum_minmax, NULL, y_min, y_max, w);
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return status;
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}
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/*
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gsl_movstat_min()
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Apply minimum filter to input vector
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Inputs: endtype - end point handling criteria
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x - input vector, size n
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y - output vector of minimum values, size n
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w - workspace
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*/
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int
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gsl_movstat_min(const gsl_movstat_end_t endtype, const gsl_vector * x, gsl_vector * y, gsl_movstat_workspace * w)
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{
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int status = gsl_movstat_apply_accum(endtype, x, gsl_movstat_accum_min, NULL, y, NULL, w);
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return status;
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}
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/*
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gsl_movstat_max()
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Apply maximum filter to input vector
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Inputs: endtype - end point handling criteria
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x - input vector, size n
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y - output vector of maximum values, size n
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w - workspace
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*/
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int
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gsl_movstat_max(const gsl_movstat_end_t endtype, const gsl_vector * x, gsl_vector * y, gsl_movstat_workspace * w)
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{
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int status = gsl_movstat_apply_accum(endtype, x, gsl_movstat_accum_max, NULL, y, NULL, w);
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return status;
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}
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