Method: Flt::FormatBase#initialize

Defined in:
lib/float-formats/classes.rb

#initialize(*args) ⇒ FormatBase

Returns a new instance of FormatBase.



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# File 'lib/float-formats/classes.rb', line 50

def initialize(*args)
  if (args.size == 3 || args.size==4 || args.size==2) &&
     (args.first.kind_of?(Integer) && args[1].kind_of?(Integer))
    sign,significand,exponent,normalize = args
    if normalize.nil?
      if [nil,true,false].include?(exponent)
        normalize = exponent
        exponent = significand
        significand = sign.abs
        sign = sign<0 ? -1 : +1
      end
    end
    @sign,@significand,@exponent = self.class.canonicalized(sign,significand,exponent,normalize)
  else
    v = form_class.nan
    case args.first
      when form_class
        v = args.first
        raise "Too many arguments for FormatBase constructor" if args.size>1
      when Array
        v = args.first
        raise "Too many arguments for FormatBase constructor" if args.size>1
      when FormatBase
        v = args.first.convert_to(form_class)
        raise "Too many arguments for FormatBase constructor" if args.size>1
      when String
        v = form_class.from_text(*args)
      when Bytes
        v = form_class.from_bytes(*args)
      when Bits
        v = form_class.from_bits(*args)
      when Numeric
        v = form_class.from_number(args.first)
        raise "Too many arguments for FormatBase constructor" if args.size>1
      when Symbol
        if args.first.to_s[0..3]!='from'
          args = ["from_#{args.first}".to_sym] + args[1..-1]
        end
        v = form_class.send(*args)
    end
    @sign,@significand,@exponent = v.to_a
  end
end