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instance method

Complex#arg

cmp.arg → float

VALUE
rb_complex_arg(VALUE self)
{
    get_dat1(self);
    return rb_math_atan2(dat->imag, dat->real);
}

Returns the angle part of its polar form.

Example

Complex.polar(3, Math::PI/2).arg  #=> 1.5707963267948966

See also #angle #as_json #abs2 #conj also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1