Re: [ros-dev] Re: Compiler-independence for 64-bit integral constants

[Mark Weaver]

>   #ifdef __GNUC__
>  #define	FMT_INT64 _T("L")
>  #elif defined(_MSC_VER)
>  #define	FMT_INT64 _T("I64")
>  #else
>  #error Unknown compiler for 64-bit integral constant suffix
>  #endif
>  
>  
>  "FMT" stands for "format string", I think this is a bit clearer than
> "DEFINE" or "MAKE".
>  
>  
>  This are some usage examples:
>  
>  printf("%" FMT_INT64 "d", index);  /* format 64 bit decimal integer
> */
>  
>  sprintf(buffer, "%" FMT_INT64 "x", index);  /* format 64 bit hex
> number, lower case */
>  
>  sprintf(buffer, "%" FMT_INT64 "X", index);  /* format 64 bit hex
> number, upper case */
>   
These don't work when compiling for a unicode build.  It's relatively 
common to deal with mixed strings (e.g. smtp/pop/imap/http server/client 
programs should typically deal with files using unicode for paths, but 
the protocol specifies ASCII strings).  I would plump for 
FMT_INT64A/FMT_INT64W/FMT_INT64 to take care of this.