libnfc/src/defines.h
2009-10-05 12:47:00 +00:00

56 lines
1.7 KiB
C

/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 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 Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#ifndef _LIBNFC_DEFINES_H_
#define _LIBNFC_DEFINES_H_
//#define DEBUG /* DEBUG flag can also be enabled using ./configure --enable-debug */
typedef void* dev_spec; // Device connection specification
#define INVALID_DEVICE_INFO 0
#define MAX_FRAME_LEN 264
#define DEVICE_NAME_LENGTH 256
#define MAX_DEVICES 16
#if defined __cplusplus
#define LIBNFC_EXTERN_C extern "C"
#else
#define LIBNFC_EXTERN_C
#endif
#ifdef _WIN32
#ifdef nfc_EXPORTS
#define LIBNFC_DECLSPEC __declspec( dllexport )
#else
#define LIBNFC_DECLSPEC __declspec( dllimport )
#endif
#else
#define LIBNFC_DECLSPEC
#endif
#define LIBNFC_EXPORT LIBNFC_EXTERN_C LIBNFC_DECLSPEC
//#define MIN(a,b) (((a) < (b)) ? (a) : (b))
//#define MAX(a,b) (((a) > (b)) ? (a) : (b))
#define INNER_XOR8(n) {n ^= (n >> 4); n ^= (n >> 2); n ^= (n >> 1); n &= 0x01; }
#define INNER_XOR32(n) {n ^= (n >> 16); n ^= (n >> 8); INNER_XOR8(n); }
#define INNER_XOR64(n) {n ^= (n >> 32); INNER_XOR32(n); }
#endif // _LIBNFC_DEFINES_H_