/usr/include/astrometry/an-endian.h is in libastrometry-dev 0.70+dfsg-1.
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 | /*
# This file is part of the Astrometry.net suite.
# Licensed under a 3-clause BSD style license - see LICENSE
*/
#ifndef AN_ENDIAN_H
#define AN_ENDIAN_H
#include <stdint.h>
// MacOSX doesn't have endian.h
// (actually 10.5 does)
#if __APPLE__
# include <sys/types.h>
#elif __FreeBSD__
# include <sys/endian.h>
#elif __sun
# include <sys/isa_defs.h>
#else
# include <endian.h>
#endif
#if \
(defined(__BYTE_ORDER) && (__BYTE_ORDER == __BIG_ENDIAN)) || \
(defined( _BYTE_ORDER) && ( _BYTE_ORDER == _BIG_ENDIAN)) || \
(defined( BYTE_ORDER) && ( BYTE_ORDER == BIG_ENDIAN))
#define IS_BIG_ENDIAN 1
#else
#define IS_BIG_ENDIAN 0
#endif
int is_big_endian();
uint32_t u32_letoh(uint32_t i);
uint32_t u32_htole(uint32_t i);
uint16_t u16_letoh(uint16_t i);
uint16_t u16_htole(uint16_t i);
void v32_htole(void* p);
void v16_htole(void* p);
void v32_letoh(void* p);
void v64_ntoh(void* p);
void v32_ntoh(void* p);
void v16_ntoh(void* p);
void v64_hton(void* p);
void v32_hton(void* p);
void v16_hton(void* p);
void endian_swap(void* p, int nbytes);
#endif
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