From: W. Trevor King <wking@drexel.edu>
Date: Wed, 11 Aug 2010 13:58:09 +0000 (-0400)
Subject: Allow fallback to XeX notation for efor extreme powers in ppSI
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=6c5cbf09021e1571f7128ad7b782e5b13d79a8e1;p=hooke.git

Allow fallback to XeX notation for efor extreme powers in ppSI
---

diff --git a/hooke/util/si.py b/hooke/util/si.py
index ac3e633..14d9010 100644
--- a/hooke/util/si.py
+++ b/hooke/util/si.py
@@ -127,7 +127,11 @@ def ppSI(value, unit='', decimals=None, power=None, pad=False):
                 # 1 for ' ', 1 for '-', 3 for number, 1 for '.', and decimals.
                 pad = 6 + decimals
             format = lambda n: '%*.*f' % (pad, decimals, n)
-    return '%s %s%s' % (format(value / pow(10,power)), PREFIX[power], unit)
+    try:
+        prefix = ' '+PREFIX[power]
+    except KeyError:
+        prefix = 'e%d ' % power
+    return '%s%s%s' % (format(value / pow(10,power)), prefix, unit)
 
 
 def get_power(value):