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Revision 2696 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Sat Aug 28 12:34:56 2004 UTC (15 years, 3 months ago) by dpvc
File length: 5844 byte(s)
Diff to previous 2678
Improved TeX and string output in a number of situations.  Improved
use of parentheses to avoid things like x+-3.  Fixed wrong parentheses
in powers.  Display (sin(x))^2 as sin^2(x) in TeX output.

Revision 2678 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Aug 23 23:55:37 2004 UTC (15 years, 3 months ago) by dpvc
File length: 5762 byte(s)
Diff to previous 2653
Modified the parser so that the classes for the various object
constructors are stored in the context table rather than hard-coded
into the parser.  That way, you can override the default classes with
your own.  This gives you even more complete control to modify the
parser.  (You had been able to replace the definitions of operators,
functions and list-like objects, but could not override the behaviour
of numbers, strings, variables, and so on.  Now you can.)

This effects most of the files, but only by changing the name of the
calls that create the various objects.

There are also a couple of other minor fixes.

Revision 2653 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Aug 19 17:31:18 2004 UTC (15 years, 3 months ago) by dpvc
File length: 5560 byte(s)
Diff to previous 2612
Fixed error with handling of +infinity and -infinity.
(They had been defined as strings, but now we can let the + and -
operators handle them).

Revision 2612 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Sat Aug 14 19:29:42 2004 UTC (15 years, 3 months ago) by dpvc
File length: 5574 byte(s)
Diff to previous 2607
Fixed some bugs in the handle of the context in ->string and ->TeX
methods of Value objects.

Revision 2607 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Sat Aug 14 11:26:49 2004 UTC (15 years, 3 months ago) by dpvc
File length: 5677 byte(s)
Diff to previous 2605
Allow unary + and - to work on infinities.

Revision 2605 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Sat Aug 14 02:50:18 2004 UTC (15 years, 3 months ago) by dpvc
File length: 5383 byte(s)
Diff to previous 2558
Incorporated infinities into Parser package better.  They have been
stored as String objects (with extra data) in the parser, and I've
left it that way, but now they convert to/from Vallue::Infinity
objects correctly, and these are used for generating the output.

Also added the Infinity answer checker, and adjusted the error
messages produces by type mismatches in the answer checkers and
elsewhere.

Revision 2558 - (view) (download) (as text) (annotate) - [select for diffs]
Added Wed Jul 28 20:32:33 2004 UTC (15 years, 4 months ago) by sh002i
File length: 5317 byte(s)
merged changes from rel-2-1-a1 -- stop using that branch.

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