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require 'yaml'
class BigDecimal #:nodoc:
alias :_original_to_s :to_s
def to_s(format="F")
_original_to_s(format)
end
yaml_as "tag:yaml.org,2002:float"
def to_yaml( opts = {} )
YAML::quick_emit( nil, opts ) do |out|
# This emits the number without any scientific notation.
# I prefer it to using self.to_f.to_s, which would lose precision.
#
# Note that YAML allows that when reconsituting floats
# to native types, some precision may get lost.
# There is no full precision real YAML tag that I am aware of.
str = self.to_s
if str == "Infinity"
str = ".Inf"
elsif str == "-Infinity"
str = "-.Inf"
elsif str == "NaN"
str = ".NaN"
end
out.scalar( "tag:yaml.org,2002:float", str, :plain )
end
end
end
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