github.com/afumu/libc@v0.0.6/musl/src/multibyte/mbrtoc32.c (about)

     1  #include <uchar.h>
     2  #include <wchar.h>
     3  
     4  size_t mbrtoc32(char32_t *restrict pc32, const char *restrict s, size_t n, mbstate_t *restrict ps)
     5  {
     6  	static unsigned internal_state;
     7  	if (!ps) ps = (void *)&internal_state;
     8  	if (!s) return mbrtoc32(0, "", 1, ps);
     9  	wchar_t wc;
    10  	size_t ret = mbrtowc(&wc, s, n, ps);
    11  	if (ret <= 4 && pc32) *pc32 = wc;
    12  	return ret;
    13  }