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Diffstat (limited to 'ext/bigdecimal/lib/bigdecimal/util.rb')
| -rw-r--r-- | ext/bigdecimal/lib/bigdecimal/util.rb | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/ext/bigdecimal/lib/bigdecimal/util.rb b/ext/bigdecimal/lib/bigdecimal/util.rb deleted file mode 100644 index cb645d2a71..0000000000 --- a/ext/bigdecimal/lib/bigdecimal/util.rb +++ /dev/null @@ -1,181 +0,0 @@ -# frozen_string_literal: false -# -#-- -# bigdecimal/util extends various native classes to provide the #to_d method, -# and provides BigDecimal#to_d and BigDecimal#to_digits. -#++ - -require 'bigdecimal' - -class Integer < Numeric - # call-seq: - # int.to_d -> bigdecimal - # - # Returns the value of +int+ as a BigDecimal. - # - # require 'bigdecimal' - # require 'bigdecimal/util' - # - # 42.to_d # => 0.42e2 - # - # See also BigDecimal::new. - # - def to_d - BigDecimal(self) - end -end - - -class Float < Numeric - # call-seq: - # float.to_d -> bigdecimal - # float.to_d(precision) -> bigdecimal - # - # Returns the value of +float+ as a BigDecimal. - # The +precision+ parameter is used to determine the number of - # significant digits for the result (the default is Float::DIG). - # - # require 'bigdecimal' - # require 'bigdecimal/util' - # - # 0.5.to_d # => 0.5e0 - # 1.234.to_d(2) # => 0.12e1 - # - # See also BigDecimal::new. - # - def to_d(precision=0) - BigDecimal(self, precision) - end -end - - -class String - # call-seq: - # str.to_d -> bigdecimal - # - # Returns the result of interpreting leading characters in +str+ - # as a BigDecimal. - # - # require 'bigdecimal' - # require 'bigdecimal/util' - # - # "0.5".to_d # => 0.5e0 - # "123.45e1".to_d # => 0.12345e4 - # "45.67 degrees".to_d # => 0.4567e2 - # - # See also BigDecimal::new. - # - def to_d - BigDecimal.interpret_loosely(self) - end -end - - -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/util' - # - # d = BigDecimal("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. - # - # require 'bigdecimal/util' - # - # d = BigDecimal("3.14") - # d.to_d # => 0.314e1 - # - def to_d - self - end -end - - -class Rational < Numeric - # call-seq: - # rat.to_d(precision) -> bigdecimal - # - # Returns the value as a BigDecimal. - # - # The required +precision+ parameter is used to determine the number of - # significant digits for the result. - # - # require 'bigdecimal' - # require 'bigdecimal/util' - # - # Rational(22, 7).to_d(3) # => 0.314e1 - # - # See also BigDecimal::new. - # - def to_d(precision) - BigDecimal(self, precision) - end -end - - -class Complex < Numeric - # call-seq: - # cmp.to_d -> bigdecimal - # cmp.to_d(precision) -> bigdecimal - # - # Returns the value as a BigDecimal. - # - # The +precision+ parameter is required for a rational complex number. - # This parameter is used to determine the number of significant digits - # for the result. - # - # require 'bigdecimal' - # require 'bigdecimal/util' - # - # Complex(0.1234567, 0).to_d(4) # => 0.1235e0 - # Complex(Rational(22, 7), 0).to_d(3) # => 0.314e1 - # - # See also BigDecimal::new. - # - def to_d(*args) - BigDecimal(self) unless self.imag.zero? # to raise eerror - - if args.length == 0 - case self.real - when Rational - BigDecimal(self.real) # to raise error - end - end - self.real.to_d(*args) - end -end - - -class NilClass - # call-seq: - # nil.to_d -> bigdecimal - # - # Returns nil represented as a BigDecimal. - # - # require 'bigdecimal' - # require 'bigdecimal/util' - # - # nil.to_d # => 0.0 - # - def to_d - BigDecimal(0) - end -end |