Class: Rational
- Inherits:
-
Numeric
- Object
- Numeric
- Rational
- Defined in:
- lib/bigdecimal/util.rb
Instance Method Summary collapse
-
#to_d(precision) ⇒ Object
call-seq: r.to_d -> bigdecimal r.to_d(sig) -> bigdecimal.
Instance Method Details
#to_d(precision) ⇒ Object
call-seq:
r.to_d -> bigdecimal
r.to_d(sig) -> bigdecimal
Converts a Rational to a BigDecimal. Takes an optional parameter sig
to limit the amount of significant digits.
r = (22/7.0).to_r
# => (7077085128725065/2251799813685248)
r.to_d
# => #<BigDecimal:1a52bd8,'0.3142857142 8571427937 0154144999 105E1',45(63)>
r.to_d(3)
# => #<BigDecimal:1a44d08,'0.314E1',18(36)>
98 99 100 101 102 103 104 |
# File 'lib/bigdecimal/util.rb', line 98 def to_d(precision) if precision <= 0 raise ArgumentError, "negative precision" end num = self.numerator BigDecimal(num).div(self.denominator, precision) end |