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

instance method

Numeric#phase

num.phase → 0 or float

static VALUE
numeric_arg(VALUE self)
{
    if (f_positive_p(self))
        return INT2FIX(0);
    return DBL2NUM(M_PI);
}

Alias of #arg

Returns 0 if the value is positive, pi otherwise.

See also #arg #numerator #polar #nonzero? also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1