method

rationalize

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rationalize(p1 = v1) public

Returns the value as a rational if possible (the imaginary part should be exactly zero).

Complex(1.0/3, 0).rationalize  #=> (1/3)
Complex(1, 0.0).rationalize    # RangeError
Complex(1, 2).rationalize      # RangeError

See to_r.

Show source

static VALUE
nucomp_rationalize(int argc, VALUE *argv, VALUE self)
{
    get_dat1(self);

    rb_scan_args(argc, argv, "01", NULL);

    if (k_inexact_p(dat->imag) || f_nonzero_p(dat->imag)) {
       VALUE s = f_to_s(self);
       rb_raise(rb_eRangeError, "can't convert %s into Rational",
                StringValuePtr(s));
    }
    return rb_funcall2(dat->real, rb_intern("rationalize"), argc, argv);
}

rationalize

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