Function utf8proc_isupper

utf8proc.c:423–427

}

UTF8PROC_DLLEXPORT int utf8proc_isupper(utf8proc_int32_t c)
{
  const utf8proc_property_t *p = utf8proc_get_property(c);
  return p->lowercase_seqindex != p->uppercase_seqindex && p->uppercase_seqindex == UINT16_MAX && p->category != UTF8PROC_CATEGORY_LT;
}

/* return a character width analogous to wcwidth (except portable and
   hopefully less buggy than most system wcwidth functions). */