# HG changeset patch
# User Nicolas Saunier <nicolas.saunier@polymtl.ca>
# Date 1459366793 14400
# Node ID 3666342dabe2f2a2360739b4a2d0fc8d8d10c58c
# Parent  5b970a5bc2333938c1725d8c7ae1784c6c453270
minor changes

diff -r 5b970a5bc233 -r 3666342dabe2 python/traffic_engineering.py
--- a/python/traffic_engineering.py	Thu Mar 24 16:37:37 2016 -0400
+++ b/python/traffic_engineering.py	Wed Mar 30 15:39:53 2016 -0400
@@ -260,7 +260,9 @@
 #########################
 
 def timeChangingSpeed(v0, vf, a, TPR):
-    return TPR+(vf-v0)/a
+    'for decelerations, a < 0'
+    return TPR-(vf-v0)/a
 
 def distanceChangingSpeed(v0, vf, a, TPR):
-    return TPR*v0+(vf*vf-v0*v0)/(2*a)
+    'for decelerations, a < 0'
+    return TPR*v0-(vf**2-v0**2)/(2*a)