Algorithm 737: INTLIB—a Portable Fortran 77 Interval Standard-Function Library

Abstract

INTLIB is meant to be a readily available, portable, exhaustively documented interval arithmetic library, written in standard Fortran 77. Its underlying philosophy is to provide a standard for interval operations to aid in efficiently transporting programs involving interval arithmetic. The model is the BLAS package, for basic linear algebra operations. The library is composed of elementary interval arithmetic routines, standard function routines for interval data and values, and utility routines. The library can be used with INTBIS 1994, and a Fortran 90 module to use the library to define an interval data type is available from the first author. © 1994, ACM. All rights reserved.