zircon/third_party/ulib/musl/src/ctype/wcswidth.c

#include <wchar.h>

int wcswidth(const wchar_t* wcs, size_t n) {
  int l = 0, k = 0;
  for (; n-- && *wcs && (k = wcwidth(*wcs)) >= 0; l += k, wcs++)
    ;
  return (k < 0) ? k : l;
}