End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Numeric#zero?

num.zero? → true or false

static VALUE
num_zero_p(VALUE num)
{
    if (rb_equal(num, INT2FIX(0))) {
        return Qtrue;
    }
    return Qfalse;
}

Returns true if num has a zero value.

See also #truncate #to_int also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1