/* *  Copyright (C) James R. Leu 2003 *  jleu@mindspring.com * *  This software is covered under the LGPL, for more *  info check out http://www.gnu.org/copyleft/lgpl.html */#ifndef MPLS_BITFIELD_H#define MPLS_BITFILED_H#include <endian.h>#if (__BYTE_ORDER == __LITTLE_ENDIAN)#define LITTLE_ENDIAN_BYTE_ORDER 1#endif/* macros to handle different byte orders (little endian or big endian) */#ifdef LITTLE_ENDIAN_BYTE_ORDER#define BITFIELDS_ASCENDING_2(X, Y)                Y; X;#define BITFIELDS_ASCENDING_3(X, Y, Z)             Z; Y; X;#define BITFIELDS_ASCENDING_4(X, Y, Z, W)          W; Z; Y; X;#define BITFIELDS_ASCENDING_7(X, Y, Z, W, U, A, B) B; A; U; W; Z; Y; X;# else#define BITFIELDS_ASCENDING_2(X, Y)                X; Y;#define BITFIELDS_ASCENDING_3(X, Y, Z)             X; Y; Z;#define BITFIELDS_ASCENDING_4(X, Y, Z, W)          X; Y; Z; W;#define BITFIELDS_ASCENDING_7(X, Y, Z, W, U, A, B) X; Y; Z; W; U; A; B;#endif /* LITTLE_ENDIAN_BYTE_ORDER */#endif