/usr/include/gnuastro/convolve.h is in libgnuastro-dev 0.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Convolve -- Convolve the dataset with a given kernel.
This is part of GNU Astronomy Utilities (Gnuastro) package.
Original author:
Mohammad Akhlaghi <akhlaghi@gnu.org>
Contributing author(s):
Copyright (C) 2017, Free Software Foundation, Inc.
Gnuastro 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.
Gnuastro 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 Gnuastro. If not, see <http://www.gnu.org/licenses/>.
**********************************************************************/
#ifndef __GAL_CONVOLVE_H__
#define __GAL_CONVOLVE_H__
/* Include other headers if necessary here. Note that other header files
must be included before the C++ preparations below */
#include <gnuastro/data.h>
/* C++ Preparations */
#undef __BEGIN_C_DECLS
#undef __END_C_DECLS
#ifdef __cplusplus
# define __BEGIN_C_DECLS extern "C" {
# define __END_C_DECLS }
#else
# define __BEGIN_C_DECLS /* empty */
# define __END_C_DECLS /* empty */
#endif
/* End of C++ preparations */
/* Actual header contants (the above were for the Pre-processor). */
__BEGIN_C_DECLS /* From C++ preparations */
gal_data_t *
gal_convolve_spatial(gal_data_t *tiles, gal_data_t *kernel,
size_t numthreads, int edgecorrection, int convoverch);
void
gal_convolve_spatial_correct_ch_edge(gal_data_t *tiles, gal_data_t *kernel,
size_t numthreads, int edgecorrection,
gal_data_t *tocorrect);
__END_C_DECLS /* From C++ preparations */
#endif
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