[Git][NTPsec/ntpsec][master] Correct precision computation in pyntpdig.

[Eric S. Raymond]

Eric S. Raymond pushed to branch master at NTPsec / ntpsec


Commits:
9a9a756d by Eric S. Raymond at 2016-12-07T14:02:04-05:00
Correct precision computation in pyntpdig.

- - - - -


1 changed file:

- ntpdig/pyntpdig


Changes:

=====================================
ntpdig/pyntpdig
=====================================
--- a/ntpdig/pyntpdig
+++ b/ntpdig/pyntpdig
@@ -38,7 +38,7 @@ from __future__ import print_function, division
 #
 # The one new option in this version is -p, borrowed from ntpdate.
 
-import sys, socket, select, struct, time, getopt, datetime 
+import sys, socket, select, struct, time, getopt, datetime, math
 
 try:
     import ntp.packet
@@ -192,15 +192,8 @@ def report(packet, json):
     t = time.localtime(int(packet.transmit_timestamp))
     ms = int(packet.transmit_timestamp * 1000000) % 1000000
 
-    digits = 6
-    #precision = packet.precision
-    #while True:
-    #    precision *= 10.0
-    #    if precision >= 1:
-    #        break
-    #    digits += 1
-    #if digits > 6:
-    #    digits = 6;
+    # Number of decimal digits of precision indicated by the precision field
+    digits = min(6, -int(math.log10(2**packet.precision)))
 
     date = time.strftime("%Y-%m-%d", t)
     tod = time.strftime("%T", t) + (".%*d" % (digits, ms))



View it on GitLab: https://gitlab.com/NTPsec/ntpsec/commit/9a9a756dff03442bd8e8f1daf68da0f38661bf81
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