mbsinit - test for “initial conversion” state

Syntax	#include <wchar.h> int mbsinit(const mbstate_t *ps);
Description	If ps is not a null pointer, mbsinit() tests if the mbstate_t object pointed to by ps describes an “initial conversion” state.
Return val.	Value != 0	if ps is a null pointer or points to an object that describes an “initial conversion” state.
	0	otherwise.