Revision history for Perl extension Math::Symbolic.
0.113 Sun Aug 17 19:13:28 2003
- Added the MS::Constant pi() constructor
- Added tests and docs.
- Added the MS::Base descend() routine. (This is a biggie.)
- Converted as many descending routines as possible to be using
descend() instead of descending themselves.
These include is_constant, is_simple_constant, is_sum,
apply_constant_fold, apply_derivatives()
- Added new method namespace to be delegated to M::S::Custom:
'contains_.
- Added docs and tests.
- Added replace().
- Fixed a bug in implement(). Now also autoparses strings.
- Added is_identical() to M::S::C::Default
- Split up M::S::C::Default into M::S::C::DefaultTests and
M::S::C::DefaultMods.
- Added the M::S::Base::descending_operands() routine that tries to
find the most sensible operands to descend into.
- Added the operand_finder parameter to descend().
- Moved set_value to M::S::Base and refactored it to use descend().
- Modified implement() similarily to set_value.
- Fixed some bugs in implement(), too.
- Hacked simplify() some more. This needs to be cleaned up real soon.
0.112 Thu Aug 7 19:11:38 2003
- Continued moving functionality into the M::S::Custom::* namespace.
- Moved constant_fold into custom namespace
- Added tests.
- Fixed serious bugs.
0.111 Tue Jul 29 12:38:40 2003
- Added Math::Symbolic::Custom::*.
- Added custom transformation and test functionality.
- Added is_sum(), is_constant(), is_integer() to M::S::C::Default
- Added documentation and tests for the above.
- Moved apply_derivatives() to the MSC::Default namespace.
- TODO goals met with this release:
+ Create a Math::Symbolic::Custom class and a
Math::Symbolic::Custom::Default class.
+ The Math::Symbolic::Custom::Default class is to
contain all builtin simplification and term-transformation
routines.
(Also contains methods that tests trees for particular
properties)
+ All calls to Math::Symbolic methods that cannot be
resolved in the Math::Symbolic inheritance hierarchy
(which should consist of the package itself, anyhow) and
that start with "apply_" should be delegated to the subs
named apply_... in the Math::Symbolic::Custom
package.
('is_', 'test_', and 'mod_' also delegated.)
+ Math::Symbolic::Custom should load
Math::Symbolic::Custom::Default.
+ Math::Symbolic::Custom::Default should inherit
from a package named Math::Symbolic::Custom::Base
which defines a special import routine that automatically
adds the loaded module to the @ISA of
Math::Symbolic::Custom.
(Implemented this using a custom exporter scheme.)
+ Thus, users can extend the number of
Math::Symbolic::Custom's by writing a package with
transformation subroutines in it that just inherits
from Math::Symbolic::Custom::Base. Upon use-ing the
custom module, the routines will automatically be
added to Math::Symbolic's transformation and testing
repertoire.
0.110 Sat Jul 19 15:16:11 2003
- Documentation patches.
- Added total derivatives.
- Fixed the host of bugs that were discovered while implementing
total derivatives.
- Added tests.
- Added docs.
- Added docs section on variable passing styles to Compiler.pm
- Added implement()
- Fixed uncovered bugs in total derivatives.
- TODO goals met with this release:
+ Add signatures to variables.
+ Add signature() methods to all elements.
+ Amend parser to parse signatures.
+ Given the signature-parser enhancements, total derivatives
start making sense.
Since function signatures must be defined by their signatures
when they're used, total derivatives can be applied to all
functions. (Or, if their implementation is still undefined,
they can possibly still be kicked out because of their
non-dependence on a particular variable.)
+ Add tests for sigs.
+ Add tests for the new features.
0.109 Fri Jul 18 00:34:00 2003
- Documentation patches.
- Added signature attribute to variables.
- Added signature() method to all tree elements.
- Added set_signature() method to variables.
- Some docs for the sig. changes.
- Tests for the sig. changes.
- Modified parser to parse unknown 'function(list)' constructs
as variables and their signatures.
- Tests for the parser changes.
- Documentation for the parser changes.
- Added some bad examples to the parser man-page.
0.108 Wed Jul 16 22:41:01 2003
- Added Math::Symbolic::Compiler (as a modified to_sub.pl).
- Modified value() semantics to optionally take arguments.
- Added set_value() method.
- Added lots of docs.
- Added some tests.
- TODO milestones met with this release:
+ Refactor the to_sub.pl code to a package that allows to
compile Math::Symbolic trees to subroutines and/or code.
0.107 Sun Jul 13 21:25:29 2003
- Fixed tests. (Note to self: recreate MANIFEST for dists.)
0.106 Sun Jul 13 19:56:29 2003
- Modified the parser to parse unknown identifiers as variables.
- Modified Operator constructor to send operands through the parser
if they aren't valid Math::Symbolic::* objects.
- Added and fixed docs. A lot.
- Added tests.
0.105 Wed Jul 9 18:56:33 2003
- Added several important items to the TODO.
- Accepted the fact that the TODO is growing faster than the code base.
- TODO milestones met with this release:
+ Add reasonable overloaded interface for arithmetic
operators and some mathematical functions as far as feasible.
+ Overloaded interface for exp, sqrt, log, +,-,*,/,**.
+ Overloaded interface for boolean context and stringification.
+ O. i. for unary minus
+ O. i. for trig functions
+ Overloaded interface for numerical context.
+ Tests for the above.
+ Documentation for the above changes
0.104 Sat Jul 5 19:17:00 2003
- Added to_sub.pl to the distribution. (Math::Symbolic -> Perl sub
compiler.) This is just a proof-of-concept.
0.103 Thu Jun 26 15:08:12 2003
- Fixed test errors.
- Added (very little) documentation.
0.102 Wed Jun 25 21:04:41 2003
- Added overloaded interface for arithmetic operators, exp, log,
sqrt, boolean context, numerical context, sin, cos, mutators.
- Added tests.
- Added docs.
0.101 Fri Jun 20 15:45:10 2003
- Documentation fixes
0.100 Fri Jun 20 01:32:32 2003
(Yep, I hack at random hours.)
- Implemented hyperbolic sine, h cosine.
- Implemented partial derivatives for h sine, h cosine
- Amended parser for h sine, h cosine.
- Same for tangents
- Myriad of bugfixes
- ExportConstants now includes (and exports) PI and EULER constants.
- Renamed class data in M::S::Operator.
- Cotangent.
- Arc sine, arc cosine, arc tangent, arc cotangent.
- Hyperbolic area sine, h. a. cosine
- Tests for the above.
- Broke the parser badly.
- (much later) Fixed it again.
- Some more documentation
- Renamed test files
- TODO milestones met with this release:
+ Add sine/cosine
+ Amend parser to parse sine/cosine.
+ Add sinh/cosh or at least allow the user to use them in the
input string to the parser and have them replaced with
(e^x ± e^-x)/2
+ Amend parser to parse hyperbolic sine/h. cosine.
+ Add tan, arctan, arcsine, arccosine
+ Amend parser to parse tan / arctan, arcsine / arccosine.
+ Find a more reasonable naming scheme for class data and
rename appropriately.
+ Add tests for the new features.
0.090 Wed Jun 18 16:37:56 2003
- Implemented sine, cosine, sine/cosine derivatives
- Amended parser for sine and cosine functions
0.080 Sun Jun 15 22:17:11 2003
- Parser now a module (M::S::Parser)
- Parser accessible through new_from_string().
0.070 Sat Jun 14 18:21:47 2003
- Parser now outputs Math::Symbolic tree
- Fixed unary-minus to infix issues.
0.060 Wed Jun 11 16:58:59 2003
- Now including rudimentary parser for algebraic expressions.
- Some documentation added.
0.050 Fri Jun 6 16:57:19 2003
- Moved the rules for partial derivatives to separatE
subs and introduced a lookup-table.
0.040 Thu Jun 5 01:12:23 2003
- Many changes again.
0.030 Wed Jun 4 18:43:00 2003
- More major enhancements (exp function, log, derivative as operator)
0.020 Wed Jun 4 14:29:15 2003
- First working version.
0.010 Tue Jun 3 21:45:57 2003
- original version; created by h2xs 1.21 with options
-AX Math::Symbolic