Use the method for testing for IEEE754 nan...

...recomended by the rejection notice on PEP 0754 and Michael
Hartmann.

1 files changed, 2 insertions, 13 deletions

diff --git a/gps.py b/gps.py
index 4a3aab02..c6f360b7 100755
--- a/gps.py
+++ b/gps.py
@@ -5,19 +5,8 @@
 #
 import time, calendar, math, socket, sys, select
 
-# Needed in all versions of Python that don't implement
-# PEP 75 (http://python.fyxm.net/peps/pep-0754.html).
-# This includes at least versions up to 2.3.4.
-# PosInf = 1e300000
-# NaN = PosInf/PosInf
-# IEEE754 says NaN == NaN is always false!
-# so this is wrong: 
-#    def isnan(x): return x == NaN
-
-# so let's use PosInf as a proxy
-# this is not mathmetically correct but good enough for altitude
-NaN = 1e10
-def isnan(x): return x > 1e9
+NaN = float('nan')
+def isnan(x): str(x) == 'nan'
 
 ONLINE_SET	= 0x00000001
 TIME_SET	= 0x00000002