/usr/include/cpl_fft.h is in libcpl-dev 7.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | /*
* This file is part of the ESO Common Pipeline Library
* Copyright (C) 2001-2017 European Southern Observatory
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef CPL_FFT_H
#define CPL_FFT_H
/*-----------------------------------------------------------------------------
Includes
-----------------------------------------------------------------------------*/
#include "cpl_imagelist.h"
CPL_BEGIN_DECLS
/*-----------------------------------------------------------------------------
New types
-----------------------------------------------------------------------------*/
/**
* @ingroup cpl_fft
* @brief The supported values of the CPL fft mode.
*/
enum _cpl_fft_mode_ {
/**
* The forward transform
* @hideinitializer
*/
CPL_FFT_FORWARD = 1 << 1,
/**
* The backward transform
* @hideinitializer
*/
CPL_FFT_BACKWARD = 1 << 2,
/**
* Transform without scaling (has no effect on forward transform)
* @hideinitializer
*/
CPL_FFT_NOSCALE = 1 << 3,
/**
* Spend time finding the best transform
* @hideinitializer
*/
CPL_FFT_FIND_MEASURE = 1 << 4,
/**
* Spend more time finding the best transform
* @hideinitializer
*/
CPL_FFT_FIND_PATIENT = 1 << 5,
/**
* Spend even more time finding the best transform
* @hideinitializer
*/
CPL_FFT_FIND_EXHAUSTIVE = 1 << 6
};
/**
* @ingroup cpl_fft
* @brief The CPL fft mode.
*/
typedef enum _cpl_fft_mode_ cpl_fft_mode;
/*-----------------------------------------------------------------------------
Function prototypes
-----------------------------------------------------------------------------*/
cpl_error_code cpl_fft_image(cpl_image *, const cpl_image *, cpl_fft_mode);
cpl_error_code cpl_fft_imagelist(cpl_imagelist *, const cpl_imagelist *,
cpl_fft_mode);
CPL_END_DECLS
#endif /* CPL_FFT_H */
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