/*
 * This code was written by Rich Felker in 2010; no copyright is claimed.
 * This code is in the public domain. Attribution is appreciated but
 * unnecessary.
 */

#include <wchar.h>

size_t mbrlen(const char* restrict s, size_t n, mbstate_t* restrict st) {
  static unsigned internal;
  return mbrtowc(0, s, n, st ? st : (mbstate_t*)&internal);
}