/usr/include/gnuastro/blank.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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blank -- Deal with blank values in a datasets
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_BLANK_H__
#define __GAL_BLANK_H__
/* Include other headers if necessary here. Note that other header files
must be included before the C++ preparations below */
#include <gnuastro/data.h>
/* When we are within Gnuastro's building process, `IN_GNUASTRO_BUILD' is
defined. In the build process, installation information (in particular
`GAL_CONFIG_SIZEOF_SIZE_T' that we need below) is kept in
`config.h'. When building a user's programs, this information is kept in
`gnuastro/config.h'. Note that all `.c' files in Gnuastro's source must
start with the inclusion of `config.h' and that `gnuastro/config.h' is
only created at installation time (not present during the building of
Gnuastro). */
#ifndef IN_GNUASTRO_BUILD
#include <gnuastro/config.h>
#endif
/* 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 */
/* Macros: */
/* Blank values: Note that for the unsigned types or small types (like
char), the maximum value is considered as a blank value, since the
minimum value of an unsigned type is zero and zero is often meaningful
in contexts were unsigned values are used. */
#define GAL_BLANK_UINT8 UINT8_MAX
#define GAL_BLANK_INT8 INT8_MIN
#define GAL_BLANK_UINT16 UINT16_MAX
#define GAL_BLANK_INT16 INT16_MIN
#define GAL_BLANK_UINT32 UINT32_MAX
#define GAL_BLANK_INT32 INT32_MIN
#define GAL_BLANK_UINT64 UINT64_MAX
#define GAL_BLANK_INT64 INT64_MIN
#define GAL_BLANK_FLOAT32 NAN
#define GAL_BLANK_FLOAT64 NAN
#define GAL_BLANK_STRING "n/a"
#if GAL_CONFIG_SIZEOF_SIZE_T == 4
#define GAL_BLANK_SIZE_T GAL_BLANK_UINT32
#else
#define GAL_BLANK_SIZE_T GAL_BLANK_UINT64
#endif
/* Functions. */
void
gal_blank_write(void *pointer, uint8_t type);
void *
gal_blank_alloc_write(uint8_t type);
void
gal_blank_initialize(gal_data_t *input);
char *
gal_blank_as_string(uint8_t type, int width);
int
gal_blank_present(gal_data_t *input, int updateflag);
gal_data_t *
gal_blank_flag(gal_data_t *data);
void
gal_blank_remove(gal_data_t *data);
__END_C_DECLS /* From C++ preparations */
#endif /* __GAL_DATA_H__ */
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