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Modified

File length: 3090 byte(s)

Diff to previous 2625

One more fix for handling intervals properly (I think it's really right this time). Also, named constants that end in numbers will produce TeX output with the number as a subscript (this was already true for variable names).

Revision

Modified

File length: 2989 byte(s)

Diff to previous 2594

Added string comparison to all Value object classes (to compare the string value of an object to another string). Overloaded perl '.' operator to do dot product when the operands are formulas returning vectors. (Part of the auto-generation of formulas). A few improvements to real and complex class output results. Made Union class slightly more robust and removed need for makeUnion method other than in the Union itself.

Revision

Modified

File length: 2989 byte(s)

Diff to previous 2592

Fixes for handling intervals better. In particular, deal better with ambiguous situations, like (1,2) that could be a point. You can use [a,a] to specify the single point a. I'd like to make {a} represent this (and maybe even {a,b,c} to form finite sets), but this would interfere with the use of { and } as alternative parentheses. (Does anyone really use these?) Do we need a cross product for intervals (and sets) as a means of representing regions in R^2 (or higher)?

Revision

Modified

File length: 2908 byte(s)

Diff to previous 2579

A number of small fixes. Most were to fix minor bugs in string and TeX output, particulary for the various list-based objects (like vectors, intervals, etc.). There were also some bug fixes in the comparison routines. Some additional checks were added for valid intervals when the coordinates are formulas.

Revision

Modified

File length: 2884 byte(s)

Diff to previous 2558

Significant update to new parser. New features include: Better control over format of vector output (you can now specify ijk-format rather than <...> format) "Fuzzy" reals, where the relations like == return true when the two values are "close enough". (This is controlable using parameters similar to those used in NUM_CMP). The fuzzy reals are now used in vectors/points/matrices/complexes/intervals and so on so that their relations will also be fuzzy. E.g., (1E-13,2) == (0,3) will be true, and norm(Vector(0,1E-13)) will equal 0. The two main portions of the parser (the Parser and Value packages) now share a common context object for configuration purposes.

Revision

Added

File length: 2851 byte(s)

merged changes from rel-2-1-a1 -- stop using that branch.

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