Class: RinRuby::R_Double

Inherits:
R_DataType show all
Defined in:
lib/rinruby.rb

Constant Summary collapse

ID = 
RinRuby_Type_Double

Class Method Summary collapse

Methods inherited from R_DataType

===

Class Method Details

.convertable?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rinruby.rb', line 725

def convertable?(value)
  value.all?{|x|
    (x == nil) || x.kind_of?(Numeric)
  }
end

.receive(io) ⇒ Object 



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# File 'lib/rinruby.rb', line 745

def receive(io)
  length = io.read(4).unpack('l').first
  res = io.read(8 * length).unpack("D*")
  na_indices = io.read(4).unpack('l').first
  io.read(4 * na_indices).unpack("l*").each{|i| res[i] = nil}
  res
end

.send(value, io) ⇒ Object 



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# File 'lib/rinruby.rb', line 730

def send(value, io)
  # Double format: data_size, data, ..., na_index_size, na_index, ...
  io.write([value.size].pack('l'))
  nils = []
  value.each.with_index{|x, i|
    if x == nil then
      nils << i
      io.write([Float::NAN].pack('D'))
    else
      io.write([x.to_f].pack('D'))
    end
  }
  io.write(([nils.size] + nils).pack('l*'))
  value
end