The C++ Interval Arithmetic Programming Reference has not been updated since the Sun ONE Studio 7, Compiler Collection (formerly Forte Developer 7) release. The Sun ONE Studio 7, C++ Interval Arithmetic Programming Reference manual can still be used with the Sun ONE Studio 8, Compiler Collection because there have been no new interval arithmetic features in this release. You can find the Sun ONE Studio 7, C++ Interval Arithmetic Programming Reference at http://docs.sun.com/doc/816-2465