This chapter deals with implementations of the interval arithmetic concepts described in Chapter 1. Such software is, in turn, used in later chapters to construct higher-level software systems to solve nonlinear systems of equations and for global optimization. A FORTRAN-77 library and a set of Fortran 90 modules built upon this library are described here. Although some information here is specific, underlying principles and philosophy are emphasized, and the packages are readily available, free of cost, to readers.
KeywordsDouble Precision Software Environment Interval Arithmetic Floating Point Interval Vector
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