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

     1  #include <wchar.h>
     2  
     3  size_t mbrlen(const char *restrict s, size_t n, mbstate_t *restrict st)
     4  {
     5  	static unsigned internal;
     6  	return mbrtowc(0, s, n, st ? st : (mbstate_t *)&internal);
     7  }