Sets all wide characters in a memory block to a given value
#include <wchar.h> wchar_t *wmemset ( wchar_t *buffer , wchar_t c , size_t n );
The memset( ) function sets each wide character in a block of n wide characters to the value c, beginning at the address in dest. The return value is the same as the pointer argument dest.
#define BLOCKSIZE 2048 // Size as a number of wchar_t elements. wchar_t *inputblock; if (( inputblock = malloc( BLOCKSIZE * sizeof(wchar_t))) != NULL ) wmemset( inputblock, L'~', BLOCKSIZE ); /* ... */