IDK0071 Tarkvaratehnika Loeng 1: Sissejuhatus tarkvaratehnikasse

Ariane Crash (1996)Reference: http://www.around.com/ariane.html(Story by James Gleick)It took the European Space Agency 10 years and $7 billion toproduce Ariane 5, a giant rocket capable of hurling a pair ofthree-ton satellites into orbit with each launch and intended togive Europe overwhelming supremacy in the commercialspace business.All it took to explode that rocket less than a minute into itsmaiden voyage last June, scattering fiery rubble across themangrove swamps of French Guiana, was a small computerprogram trying to stuff a 64-bit number into a 16-bit space.One bug, one crash. Of all the careless lines of code recordedin the annals of computer science, this one may stand as themost devastatingly efficient. From interviews with rocketryexperts and an analysis prepared for the space agency, aclear path from an arithmetic error to total destructionemerges.