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expalin this syntax pls


Hello All,

Is it correct to leave a space in declaring args to following function. This has been cut paste from file /usr/include/netdb.h.
Quite surprisingly there is no compilation error but please explain me this novel syntax. All these lines have a space ..looks a space if not some invisible character. plz expalin this anomally. e.g there is a space between __restrict and __name ..

======= from /usr/include/netdb.h ===================
extern int gethostbyname_r (__const char *__restrict __name, <<<<see this line
struct hostent *__restrict __result_buf, <<<<see this line
char *__restrict __buf, size_t __buflen,
struct hostent **__restrict __result, <<<<see this line
int *__restrict __h_errnop) __THROW;

==================================================


Thanks for ur patience
Please Advise,
-Nitin








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