Function _is_same_name

numpy/core/src/umath/ufunc_object.c:612–623

* Returns 1 if the dimension names pointed by s1 and s2 are the same, * otherwise returns 0. */

 * otherwise returns 0.
 */
static int
_is_same_name(const char* s1, const char* s2)
{
    while (_is_alnum_underscore(*s1) && _is_alnum_underscore(*s2)) {
        if (*s1 != *s2) {
            return 0;
        }
        s1++;
        s2++;
    }
    return !_is_alnum_underscore(*s1) && !_is_alnum_underscore(*s2);
}

/*
 * Sets the following fields in the PyUFuncObject 'ufunc':