class that returns gaussian (normal) distributed numbers (f=exp(-0.5*x*x)/sqrt(2*pi))
Tango Dual License: 3-Clause BSD License / Academic Free License v3.0. See LICENSE_TANGO.txt for details.
Copyright (c) 2008. Fawzi Mohamed Some parts copyright (c) 2009-2016 dunnhumby Germany GmbH. All rights reserved.
Initial release: July 2008