On Thu, Apr 19, 2012 at 12:24:42PM +0530, Pritam Bankar wrote: > Hi, > > In Linux code we add a guard macro to avoid multiple declarations of > identifiers. > But I see some macros defined with trailing underscores. > e.g. In arch/x86/include/asm/ > > Normally it is defined like, > > #ifndef _ASM_X86_ALTERNATIVE_H > #define _ASM_X86_ALTERNATIVE_H > > But in some files I see trailing underscore after H , > > e.g. arch/x86/include/asm/intel_scu_ipc.h > > > #ifndef _ASM_X86_INTEL_SCU_IPC_H_ > #define _ASM_X86_INTEL_SCU_IPC_H_ > > There are others files also > arch/x86/include/asm/irqflags.h > http://lxr.linux.no/#linux+v3.3.2/arch/x86/include/asm/probe_roms.h > > > DOES THIS TRAILING UNDERSCORE HAS SPECIAL MEANING ??? My guess: No. Greetings, Philipp _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
