/*gauss.c-gaussianrandomnumbers,usingtheZigguratmethod**Copyright(C)2005JochenVoss.**Fordetailsseethefollowingarticle.**GeorgeMarsaglia,WaiWanTsang*TheZigguratMethodforGeneratingRandomVariables*JournalofStatisticalSoftware,vol.5(2000),no.8*http://www.jstats