diff options
Diffstat (limited to 'ruby_2_2/ext/bigdecimal/lib/bigdecimal/util.rb')
| -rw-r--r-- | ruby_2_2/ext/bigdecimal/lib/bigdecimal/util.rb | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/ruby_2_2/ext/bigdecimal/lib/bigdecimal/util.rb b/ruby_2_2/ext/bigdecimal/lib/bigdecimal/util.rb deleted file mode 100644 index 82c82c8e1e..0000000000 --- a/ruby_2_2/ext/bigdecimal/lib/bigdecimal/util.rb +++ /dev/null @@ -1,127 +0,0 @@ -# BigDecimal extends the native Integer class to provide the #to_d method. -# -# When you require the BigDecimal library in your application, this methodwill -# be available on Integer objects. -class Integer < Numeric - # call-seq: - # int.to_d -> bigdecimal - # - # Convert +int+ to a BigDecimal and return it. - # - # require 'bigdecimal' - # require 'bigdecimal/util' - # - # 42.to_d - # # => #<BigDecimal:1008ef070,'0.42E2',9(36)> - # - def to_d - BigDecimal(self) - end -end - -# BigDecimal extends the native Float class to provide the #to_d method. -# -# When you require BigDecimal in your application, this method will be -# available on Float objects. -class Float < Numeric - # call-seq: - # flt.to_d -> bigdecimal - # - # Convert +flt+ to a BigDecimal and return it. - # - # require 'bigdecimal' - # require 'bigdecimal/util' - # - # 0.5.to_d - # # => #<BigDecimal:1dc69e0,'0.5E0',9(18)> - # - def to_d(precision=nil) - BigDecimal(self, precision || Float::DIG) - end -end - -# BigDecimal extends the native String class to provide the #to_d method. -# -# When you require BigDecimal in your application, this method will be -# available on String objects. -class String - # call-seq: - # string.to_d -> bigdecimal - # - # Convert +string+ to a BigDecimal and return it. - # - # require 'bigdecimal' - # require 'bigdecimal/util' - # - # "0.5".to_d - # # => #<BigDecimal:1dc69e0,'0.5E0',9(18)> - # - def to_d - BigDecimal(self) - end -end - -# BigDecimal extends the native Numeric class to provide the #to_digits and -# #to_d methods. -# -# When you require BigDecimal in your application, this method will be -# available on BigDecimal objects. -class BigDecimal < Numeric - # call-seq: - # a.to_digits -> string - # - # Converts a BigDecimal to a String of the form "nnnnnn.mmm". - # This method is deprecated; use BigDecimal#to_s("F") instead. - # - # require 'bigdecimal' - # require 'bigdecimal/util' - # - # d = BigDecimal.new("3.14") - # d.to_digits - # # => "3.14" - def to_digits - if self.nan? || self.infinite? || self.zero? - self.to_s - else - i = self.to_i.to_s - _,f,_,z = self.frac.split - i + "." + ("0"*(-z)) + f - end - end - - # call-seq: - # a.to_d -> bigdecimal - # - # Returns self. - def to_d - self - end -end - -# BigDecimal extends the native Rational class to provide the #to_d method. -# -# When you require BigDecimal in your application, this method will be -# available on Rational objects. -class Rational < Numeric - # call-seq: - # r.to_d(precision) -> bigdecimal - # - # Converts a Rational to a BigDecimal. - # - # The required +precision+ parameter is used to determine the amount of - # significant digits for the result. See BigDecimal#div for more information, - # as it is used along with the #denominator and the +precision+ for - # parameters. - # - # r = (22/7.0).to_r - # # => (7077085128725065/2251799813685248) - # r.to_d(3) - # # => #<BigDecimal:1a44d08,'0.314E1',18(36)> - def to_d(precision) - if precision <= 0 - raise ArgumentError, "negative precision" - end - num = self.numerator - BigDecimal(num).div(self.denominator, precision) - end -end |