/usr/include/gwyddion/libprocess/correct.h is in libgwyddion20-dev 2.44-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* @(#) $Id: correct.h 17958 2016-01-03 12:02:08Z yeti-dn $
* Copyright (C) 2003 David Necas (Yeti), Petr Klapetek.
* E-mail: yeti@gwyddion.net, klapetek@gwyddion.net.
*
* 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.
*/
#ifndef __GWY_PROCESS_CORRECT_H__
#define __GWY_PROCESS_CORRECT_H__
#include <libprocess/datafield.h>
G_BEGIN_DECLS
typedef void (*GwyCoordTransform2DFunc)(gdouble x,
gdouble y,
gdouble *px,
gdouble *py,
gpointer user_data);
void gwy_data_field_correct_laplace_iteration(GwyDataField *data_field,
GwyDataField *mask_field,
GwyDataField *buffer_field,
gdouble corrfactor,
gdouble *error);
void gwy_data_field_correct_average (GwyDataField *data_field,
GwyDataField *mask_field);
void gwy_data_field_correct_average_unmasked (GwyDataField *data_field,
GwyDataField *mask_field);
void gwy_data_field_mask_outliers (GwyDataField *data_field,
GwyDataField *mask_field,
gdouble thresh);
void gwy_data_field_mask_outliers2 (GwyDataField *data_field,
GwyDataField *mask_field,
gdouble thresh_low,
gdouble thresh_high);
void gwy_data_field_distort (GwyDataField *source,
GwyDataField *dest,
GwyCoordTransform2DFunc invtrans,
gpointer user_data,
GwyInterpolationType interp,
GwyExteriorType exterior,
gdouble fill_value);
void gwy_data_field_affine (GwyDataField *source,
GwyDataField *dest,
const gdouble *invtrans,
GwyInterpolationType interp,
GwyExteriorType exterior,
gdouble fill_value);
GwyPlaneSymmetry gwy_data_field_unrotate_find_corrections(GwyDataLine *derdist,
gdouble *correction);
G_END_DECLS
#endif /* __GWY_PROCESS_CORRECT__ */
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