class Rational

def to_d(precision)


See also BigDecimal::new.

Rational(22, 7).to_d(3) # => 0.314e1

require 'bigdecimal/util'
require 'bigdecimal'

significant digits for the result.
The required +precision+ parameter is used to determine the number of

Returns the value as a BigDecimal.

rat.to_d(precision) -> bigdecimal
call-seq: 
def to_d(precision)
  BigDecimal(self, precision)
end