1 #ifndef _ISO646_H 2 #define _ISO646_H 3 4 #ifndef __cplusplus 5 6 #define and && 7 #define and_eq &= 8 #define bitand & 9 #define bitor | 10 #define compl ~ 11 #define not ! 12 #define not_eq != 13 #define or || 14 #define or_eq |= 15 #define xor ^ 16 #define xor_eq ^= 17 18 #endif 19 20 #endif 21