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200 lines
7.8 KiB
200 lines
7.8 KiB
---------------------------------------------------------------------------- |
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User visible changes to BuDDy |
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---------------------------------------------------------------------------- |
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+ means added code |
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x means bugfix or changed code |
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- means removed code |
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VER 2.4 (July 2004) |
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------------------- |
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+ Using configure script for the build process. |
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+ Adding runregression script which runs examples and compare to |
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expected results. |
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VER 2.3 (June 2004) |
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------------------- |
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+ Nothing :-( This is just the first version in SourceForge, |
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so it deserved its own number. |
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VER 2.2 (november 2002) |
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----------------------- |
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+ Added bvec_ite() for calculating an if-then-else operation on |
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a boolean vector. |
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x Fixed some garbage collection problems introduced in version 2.1. |
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VER 2.1 (march 2002) |
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-------------------- |
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+ Added bdd_allsat() for calculating all possible variable assignments |
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to a bdd. |
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x Fixed some wrong garbage collection #defines in kernel.h. If you |
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haven't experinced any problems using BuDDy, then this should not |
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be an issue. No bug reports reported for this one - found by code |
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inspection thanx to Nicola Soranzo. |
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x Fixed some copy paste errors in the prime number calculation. |
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This should not be an issue. No bug reports reported for this one |
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- found by code inspection thanx to Nicola Soranzo. |
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VER 2.0 (march 2001) |
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-------------------- |
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x Change the copyright notice to a more acceptable form. |
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x Speedup changes in bdd_support() |
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x Rewrote all the prime number calculations in order to get the |
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copyright right. |
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VER 1.9 (august 2000) |
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--------------------- |
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+ Added bdd_pathcount |
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+ Added bdd_anodecount |
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+ Added bdd_buildcube, bdd_ibuildcube |
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x Bugfix in bdd_satcountset and bdd_satcountlnset. This corrects a bug |
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introduced in version 1.8. |
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x bug fixes in bdd_constraint and bdd_simplify. Both did calculate a |
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correct cofactor, but not necessarily a minimal one. Changed the name |
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of bdd_constraint to bdd_constrain at the same time. |
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x bug fix in memory allocation for bdd_addvarblock |
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x Changed functions in bddop.c in order to avoid some compiler warnings. |
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x Makefile also installs "fdd.h" and "bvec.h". |
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x Small #include fix in N-Queen example. |
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x Minor changes in the documentation. |
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VER 1.8 (may 2000) |
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------------------ |
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+ Bugfix in the kernel: canonicity was not unfortunately not guaranteed |
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on certain compilers (at least the microsoft visual C compiler) due to a |
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signed/unsigned bug in kernel.c (and actually not microsofts fault). |
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+ Speedups in the reordering code. |
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+ Added the use of an interaction matrix for variable swapping. |
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+ Added bdd_satoneset |
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+ Added bdd_getallocnum |
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+ Added bdd_setvarorder |
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+ Added bdd_unique, bdd_appuni. |
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+ Added bvec_shlfixed, bvec_shrfixed and changed the prototype for |
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bvec_shl and bvec_shr. |
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+ Added bvec_mulfixed, bdd_divfixed, bdd_div and changed the |
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prototype for bvec_mul. |
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+ Added bdd_printstat |
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+ Added new examples: solitare and money |
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+ Forces cache tables to prime-number size. |
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+ Added bdd_clear_error() if anybody needs that. |
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+ Added reorder method WIN3 and WIN3ITE |
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x Small change in queen.cxx - with a huge impact on runtime! |
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x Bugfix in reordering. In some cases reordering would go on forever; |
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first reroder, then retry, then reorder again without resize etc. always |
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reordering in the same operation. Now at most one reordering is allowed |
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for each bdd operation. |
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x Bugfix in C++ printing in Dot format. Wrote zero for one and vice versa. |
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x Bugfix in the garbage collector. If bdd_setmaxincrease was used, then |
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BuDDy would call bdd_error prematurely. Not a major bug, but annoying. |
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x Bugfix in bdd_load. |
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x Speedup in bdd_satcountset and bdd_satcountlnset |
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x Updates to the docs. |
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x Updates to the makefiles |
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VER 1.7 (september 1999) |
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------------------------ |
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+ Added support for boolean vector operations used in integer arithmetics |
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+ Split "bdd.h" into "bdd.h", "fdd.h" and "bvec.h" |
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+ Added bdd_cachestats |
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+ Added bdd_and, bdd_or, bdd_xor, bdd_impl, bdd_biimpl |
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(wrappers for bdd_apply). |
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+ Added a BDD calculator for combinatorial circuits as an example. |
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+ Added an example showing the use of the FDD interface. |
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+ Added bdd_autoreorder_times, bdd_getreorder_method, bdd_getreorder_times, |
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bdd_reorder_probe, bdd_enable_reorder, bdd_disable_reorder, |
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bdd_var2level, bdd_level2var, bdd_reorder_gain, bdd_swapvar |
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+ Added bdd_file_hook, bdd_strm_hook, fdd_file_hook, fdd_strm_hook |
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+ Added support for dynamic resizing of the operator caches with |
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the function bdd_setcacheratio. |
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+ Added more documentation. |
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x Bugfix in reordering code. This would appear when recursive variable |
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blocks were defined (blocks with sub-blocks). |
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x Speedup changes in the variable reordering code |
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x The automatic reordering threshhold function has been changed |
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x Automatic reordering is now interrupting and restarts bdd operations |
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x Prototype for bdd_reorder_hook changed. |
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x Printing of reorder information (verbose level > 0) is changed. |
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x The threshold for stopping of the iterative reordering methods has |
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been changed. The reordering now continues until no progress is done |
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at all (before it would stop when less than 5% where gained). |
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x Added a few sanity checks to many of the functions. |
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x Bugfix (parameter checking) in fdd_ithvar. |
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- bdd_varlevel removed (use bdd_var2level and bdd_level2var). |
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VER 1.6 (november 1998) |
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----------------------- |
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+ Added bdd_resetpair |
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+ Added bdd_satcountset, bdd_satcountlnset |
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+ Added macro bdd_relprod |
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+ Added fdd_overlapdomain |
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+ Added fdd_domain |
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x Fixed a bug in bdd_setvarnum and bdd_extvarnum. |
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x Fixed a bug in bdd_newpair() which would give problems with reordering. |
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x Speedup changes in bdd_exist, bdd_forall, bdd_appex, bdd_appall |
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x Speedup changes in bdd_restrict |
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x Changed bdd_gbc_hook to include both pre and post garbage collection. |
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VER 1.5 (september 1998) |
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------------------------ |
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+ Added bdd_cofactor |
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+ Added and fixed some error checks in fdd.c |
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x Fixed a bug in bdd_setvarnum(). |
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VER 1.4 (july 1998) |
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------------------- |
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The package just got a name: BuDDy |
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+ Added functions bdd_compose, bdd_veccompose, bdd_ite. |
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+ Added functions bdd_setbddpair, bdd_setbddpairs. |
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+ Added functions bdd_var, bdd_low, bdd_high. |
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+ Added technical documentation in docs/tech.txt |
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x Overloaded C++ functions are not used any more. This mainly changes |
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the name of the printing functions in C++. |
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x Changed datatype names (You'll hate me for this one): |
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BddPair -> bddPair |
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BddStat -> bddStat |
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BddGbcStat -> bddGbcStat |
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x Added slightly more documentation. |
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x Some internal changes to the code - should not be visible to users. |
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VER 1.3 (june 1998) |
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------------------- |
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x Fixed a few serious bugs in the reordering code |
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VER 1.2 (june 1998) |
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------------------- |
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+ Added support for dynamic variable reordering |
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+ Added reordering handler (bdd_reorder_hook) |
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+ More added to the docs |
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x Changed the event handlers (bdd_xxx_hook) |
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VER 1.1 (april 1998) |
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-------------------- |
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+ Added bdd_varprofile |
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+ Added fdd_scanset |
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+ Mucho better documentation. |
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+ Added Henrik Reif Andersen's BDD notes to the documentation. |
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+ Added BDD_REORDER_RANDOM for test purposes (usefull for others?) |
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x Fixed a bug in bdd_appex and bdd_appall. |
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x Fixed a bug in bdd_simplify. |
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x Speed fixup to fdd_extdomain |
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x Lots of small (insignificant?) bug fixes in fdd.c. |
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x bdd_load/save updated to take reordering into account. |
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x Generalized bdd_restrict to use a BDD variable set. |
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x Fixed the identifiers for the operator caches. |
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x The math functions log1p and pow2 has been removed as they didn't |
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exist on some systems. The same applies to M_LN2. |
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x New file structure and makefiles. |
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- Removed bdd_break, bdd_restart1 |
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