[Python-bugs-list] [ python-Bugs-705836 ] struct.pack of floats in non-native endian order

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Bugs item #705836, was opened at 2003-03-18 20:17
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=705836&group_id=5470

Category: Python Library
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Richard Hill (richardh2003)
Assigned to: Nobody/Anonymous (nobody)
Summary: struct.pack of floats in non-native endian order

Initial Comment:
Python version 2.1 (2.2.1 behaves the same).
Windows 2000 and RH Linux 8.0

This was run on an Intel platform.

>>> v = 7.0 + .1 + .1 + .1 + .1 + .1 + .1 + .1 + .1 + .1 
+ .1
>>> v
7.9999999999999964
>>> struct.pack( "f", v )
'\x00\x00\x00A'
>>> struct.pack( ">f", v )
'@\x80\x00\x00'

These two should be the same byte pattern (only 
reversed)!

>>> struct.unpack( ">f", '@\x80\x00\x00' )
(4.0,)

!!!!!



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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=705836&group_id=5470