Module: Dvi::Util

Defined in:
lib/dvi/util.rb

Instance Method Summary collapse

Instance Method Details

#read_int1 ⇒ Object 



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# File 'lib/dvi/util.rb', line 18

def read_int1
  ui = read_uint1
  ui & 128 != 0 ? ui - 256 : ui
end

#read_int2 ⇒ Object 



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# File 'lib/dvi/util.rb', line 23

def read_int2
  ui = read_uint2
  ui & 32768 != 0 ? ui - 65536  : ui
end

#read_int3 ⇒ Object 



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# File 'lib/dvi/util.rb', line 28

def read_int3
  ui = read_uint3
  ui & 8388608 != 0 ? ui - 16777216 : ui
end

#read_int4 ⇒ Object 



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# File 'lib/dvi/util.rb', line 33

def read_int4
  ui = read_uint4
  ui & 2147483648 != 0 ? ui - 4294967296  : ui
end

#read_uint1 ⇒ Object 



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# File 'lib/dvi/util.rb', line 2

def read_uint1
  readchar
end

#read_uint2 ⇒ Object 



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# File 'lib/dvi/util.rb', line 6

def read_uint2
  (readchar << 8) | readchar
end

#read_uint3 ⇒ Object 



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# File 'lib/dvi/util.rb', line 10

def read_uint3
  (readchar << 16) | read_uint2
end

#read_uint4 ⇒ Object 



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# File 'lib/dvi/util.rb', line 14

def read_uint4
  (readchar << 24) | read_uint3
end