This code is (C) Marc Gershow; licensed under the Creative Commons Attribution Share Alike 3.0 United States License.
 * To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/3.0/us/ or send a letter to
 * Creative Commons, 171 Second Street, Suite 300, San Francisco, California, 94105, USA.

except for timer.h and timer.cpp, which are copyright Song Ho Ahn (song.ahn@gmail.com) 
http://www.songho.ca/misc/timer/timer.html