Function definition with multiple '( )'

[abcd12344445555]

Hi,

Is that a function definition? Why there are 2 sets of '()' in the definition and in the call?
What's the name of this kind of definition?

Definition:

static inline void func(pu) ( void )
{
  printf( "%s", s_msg_usage );
}

Call:

func(pu)();

Thanks.

 

[xwb]

func(pu) returns a function pointer. The second set of () is for the function pointer.

 

[abcd12344445555]

Thanks for the reply. It turned out that the 'func(pu)' was actually a macro.

Regards.