how to map float to 32 bit integer in python

Question

From the AR Drone Developer's guide:

The number −0.8 is stored in memory as a 32- bit word whose value is BF 4CCCCD (16) , according to the IEEE-754 format. This 32-bit word can be considered as holding the 32-bit integer value −1085485875 (10).

Is there an "easy way" (built-in functions/existing modules) to do this in python ?

P.Melch · Accepted Answer · 2011-11-09 10:32:09Z

6

maybe not the best method, but it works.

import struct
s = struct.pack("f", -0.8)
i = struct.unpack("i", s)
print i

answered Nov 9, 2011 at 10:32

P.Melch

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1 Comment

jsbueno Over a year ago

I disagree as to "maybe not the best method" - it is "the one obvious way" to do it. Actually, there is another weay I'd consider "pythonic" of doing it using ctypes, but unlike the jack in @eryksun's comment, I'd use a ctype Union type.

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