/usr/lib/ruby/1.9.1/bigdecimal/util.rb is in libruby1.9.1 1.9.3.0-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | 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
class Float < Numeric
# call-seq:
# flt.to_d(precision=nil) -> 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+1)
end
end
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
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
class Rational < Numeric
# call-seq:
# r.to_d(sig) -> bigdecimal
#
# Converts a Rational to a BigDecimal. Takes an optional parameter +sig+ to
# limit the amount of significant digits.
# If a negative precision is given, raise ArgumentError.
# The zero precision and implicit precision is deprecated.
#
# 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)>
def to_d(precision=0)
if precision < 0
raise ArgumentError, "negative precision"
elsif precision == 0
warn "zero and implicit precision is deprecated."
precision = BigDecimal.double_fig*2+1
end
num = self.numerator
BigDecimal(num).div(self.denominator, precision)
end
end
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