zircon/third_party/ulib/musl/src/string/wcsncasecmp.c

#include <wchar.h>
#include <wctype.h>

int wcsncasecmp(const wchar_t* l, const wchar_t* r, size_t n) {
  if (!n--)
    return 0;
  for (; *l && *r && n && (*l == *r || towlower(*l) == towlower(*r)); l++, r++, n--)
    ;
  return towlower(*l) - towlower(*r);
}