A General Interval Arithmetic Evaluator Demo in Scheme

The source code for this applet is in the files

ereal.scm -- an implementation of extended reals
gia.scm -- an implementation of interval arithmetic
opparse.scm -- an Operator Precedence parser
giaeval.scm -- the General Interval Arithmetic Evaluator
giaevaldemo.scm -- the GUI

Todo:

add programming interface (variables, assignment statements, tests)
add more operands (currently abs, sqrt, sq, % are not implemented).

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