CHEM.datatype.compress.IntegerCodec

Class IntegerCodec

Codec --+ | IntegerCodec

OPTIONS: bits = DEFAULT=32 bitwidth (not including sign) sign = DEFAULT=FALSE, signed our unsigned truncate = DEFAULT=True, throw exceptions or set out of range data to MaxInt or MinInt? FORMAT: 1-bit for sign (optional) = +/- --> 1/0 $bits$-bits of Integer

Instance Methods

[hide private]

__init__(self, bits=32, sign=False, truncate=True)

encodeL(self, data)

decodeI(self, iter)

Inherited from Codec: __call__, decode, finger

init(self, bits=32, sign=False, truncate=True)
(Constructor)

>>> C=IntegerCodec()
>>> for x in xrange(0,10):
...   if x!=C.decode(C(x)): print x, C.decode(C(x)), C(x)
>>> C=IntegerCodec(sign=True)
>>> for x in xrange(-10,10):
...   if x!=C.decode(C(x)): print x, C.decode(C(x)), C(x)
>>> C=IntegerCodec(bits=3)
>>> C.decode(iter(C(123123)))==7
1
>>> C.decode(C(-1))==0
1
>>> C=IntegerCodec(bits=3,truncate=False)
>>> C.decode(iter(C(123123)))==7
Traceback (most recent call last):
  ...
ValueError: data out of range
>>>

Overrides: Codec.__init__

encodeL(self, data)

Overrides: Codec.encodeL

decodeI(self, iter)

Overrides: Codec.decodeI

Class IntegerCodec

__init__(self, bits=32, sign=False, truncate=True) (Constructor)

encodeL(self, data)

decodeI(self, iter)

init(self, bits=32, sign=False, truncate=True)
(Constructor)