
Complete version history of the rewrite project
===============================================

If you want to see which things are new and different from the original
Math::* in the Perl core, see CHANGES.

This lists the complete version history for the rewritten version as well as
the new Math::String, Math::String::Charset and Math::Roman.

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Math::Roman:

2001-02-17 1.02: require 5_005;

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Math::Big:

2001-03-17 1.00: first version with primes(), fibonacci(), base()
2001-03-24 1.01: added: hailstone()

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Math::String:

1.02: fixed new() as copy, bstr works now, dropped multiple charsets
1.03: 02/2001: added support for Math::String::Charset and thus bi-grams
               added: caching for more speed
2001-02-14 1.04: fixed inheritance/overloading bugs (objectify)
                 finally got rid of copy&paste overload
2001-02-16 1.05: fixed overload bug in cmp (Math::String cmp something other)
2001-02-22 1.06: fixed: digits() => length()
2001-03-18 1.07: fixed: documentation
2001-03-25 1.08: added: support for caching of string form

############################################################################## 
Math::String::Charset:

2000-02-07 1.02: first version with bi-grams
2000-02-14 1.03: fixed: simple charsets to work now,
                 added: _end hash and _ones set
2000-02-16 1.04: added: char(), charlength()
2000-02-17 1.05: fixed: chars with diff. len raise error, works now with
                        characters of length > 1
                        some slight optimizations for simple charsets
2000-02-22 1.06: fixed: documentation (fill-characters, die on error)
			toggle $Math::String::Charset::die_on_error
		        num2str() is now about a small, constant amount faster
2000-03-18 1.07: fixed: documentation
		 added: separator string/char for 'the lazy fox' style strings
		 	renamed type() to order()
		 	documented that length() always returns count of chars
2000-03-25 1.08: added: next(), prev() for simple charsets (cache in M::S)

############################################################################## 
Math::String::Sequence:

2001-03-20 1.00 first version, complete with test and doc
2001-03-24 1.01 support for reversed sequences

############################################################################## 
Math::BigFloat:

2000-02-18 1.00: started work
2000-02-22 1.01: new() and bstr() work now (sort of)
2000-02-24 1.02: add()/sub() should work now
2000-03-06 1.03: layed more foundations (mul() etc)
2000-03-27 1.04: bmul/bdiv/cmp work now, better _norm()
2000-03-31 1.05: fixed bstr() and bsstr()
	         added AUTOLOAD for fxxx() to work as well as bxxx()
		 enhanced and fixed testsuite for mul/cmp/add/new
2000-04-05 1.06: bstr() returns NaN for NaN's
		 renamed _norm to bnorm, added it to AUTOLOAD for compatibility
		 fixed bug Math::BigFloat->new(Math::BigInt->new(3));
		 bug mul/div when second arg was BigInt
		 bdiv() works now with precision
		 precision()
		 doc about mixing different objects in overloaded math

############################################################################## 
Math::BigFraction (experimental):

2001-11-20 0.01: first version
2001-03-30 0.02: made it from BF to BigFraction, fixed doc, added testcases

############################################################################## 
Math::BigInt::Constant:

2000-03-24 1.00: first version
2000-03-27 1.01: fixed up documentation

############################################################################## 
Math::BigInt:

2000-11-13 v1.02 Tels
 fixed sub and mul (sort of)
 found out that "$wanted = shift || return bzero()" causes a call to numify,
 testing for undefined fixes this problem (but might waste more time for
 a new(0), will save time on average.
2000-11-14 v1.03 Tels
 x**0 => 1 (instead of x)
 fixed bigintpm to include bpow, binc, bdec, new() test
2000-11-15 v1.04 Tels
 fixed bigintpm to test '++' and '--' properly
 done div, fixed mul/bpow (13 tests remain)
2000-11-16 v1.05 Tels
 8 tests remain
 new copies _all_ fields, not only Math::Bigint ones
2000-11-19 v1.06 Tels
 7 tests remain
 bgcd accepts lists, added blcm
2000-11-20 v1.07 Tels
 objectify fixed to not make copies and work with subclasses
2000-11-22 v1.08 Tels
 fixed all but one test (band bior bxor etc)
2000-11-23 v1.09 Tels
 fixed bug in bmul (and thus bpow) (self multiply works now)
2000-11-24 v1.10 Tels
 finally made it Math::BigInt (w/o trailing 's')
2001-02-14 v1.11 Tels
 * fixed bug in band(), bxor(), etc that used badd($x, fixed_number_here);
 * since subclasses might not be happy with fixed numbers, make sure we pass
   BigInts all the time if using something like $someclass->badd();
 * fixed bug in band/bxor/bior which destroyed second argument
 * bxor/band/bior work now correctly for subclasses
 * ++ and -- are now a tad (ca 5%) faster
2001-02-16 v1.12 Tels
 * accidentily dropped self-multiply test in bigintpm.t
 * fixed bug in overloading cmp
 * after correcting the overload for 'cmp', I got a lot of test failings and
   finally dicsovered that the bstr()'s return of '[+-][0-9]+' instead of
   Perls ways of '[-]?[0-9]+' breaks string comparisations with numbers :(
   F.i. ok() from Test.pm uses 'eq' and you can not do ok($a,3*3) where $a
   is a BigInt. IMNSHO clearly wrong. And only changing the way cmp is
   overloaded would lead to the curios situation that the following:
   'print "$a eq $b" if $a eq $b;' would print "+3 eq 3", which looks wrong.
   Mark B. said go ahead and change bstr(), so I changed it ;) to drop
   the '+', adapted all the tests, changed the doc, etc.
   BigInts behave now transparently like build-in scalars in integer/string
   context ;o)
2001-02-18 v1.13 Tels
 * got rid of duplicated copy() code in new()
2001-02-21 v1.14 Tels
 * overload +=, -=, *= and /= for about 20-30% more speed if both args have
   roughly same length
 * shortcut in add() makes $x += $y; $x -= $y; for large $x and small $y
   an O(1) case instead of O(N)
 * fixed (non-critical) bug that caused objectify in numify/bool/stringify to
   create scratch objects from undef params.
2001-02-24 v1.15 Tels
 * $x / $x is now a lot faster (more O(1) than O(N))
 * 10 ** $x is now a lot faster (more O(N/5) instead of O(N))
 * overload of **= makes $x **= $y faster
 * 0 ** 0 was NaN, not 1
 * -a % b = +c (was -c) to be compatible with perl
 * added $x->length() and test for it; fixed _digits() (was off by 1)
 * objectify() was not exported, added tests for objectify()
2001-03-09 v1.16 Tels
 * Math::BigInt::badd(4,5) and Math::SomeChildOfBI->badd(4,5) work now
 * '$x = scalar (**|%|+|-|*|\) $object;' failed (was not tested, either)
 * 'if ($x)' is now O(1) instead of O(N) and at least twice as fast
 * fixed nasty bug in _digits that caused <=> after add/sub/mul etc to fail
   if result was between 100001 and 109999, added test for this
 * added test cases for op's that should preserve args (+,+=,abs(), neg() etc)
 * added tests for overloaded 'bool'
 * added test.pl and some examples (prime.pl, bigprimes.pl)
 * tests after "use Math::BigInt :constant" were screwed due to not using eval
 * $x->numify() (for $array[$x] = 0; etc) is much faster now
 * added caveat documentation for $x = -$x; and $x *= string1 operator string2;
2001-03-24 v1.20 Tels
 * added: is_nan()
 * bug in bmod/bdiv, I forgot some cases with negatives. Thanx to Bruce Fields!
 * documented ':constant' and eval() crash on Perl 5.00x
 * documented BigInts behaviour of bmod/bdiv and use integer
2001-03-30 v1.21 Tels
 * bool() works now under 5_005
 * bug in bsub where numbers with at least 6 trailig digits after any op failed
2001-04-05 v1.22 Tels
 * documented Peters OS/390 patch/changes (fix was in for quite some time)
 * fixed bug Math::BigInt->new(Math::BigFloat->new(3));
 * objectify() with other objects than BigInt as further args, copy() etc
 * $x->digit($n) to query fast value of Nth digit
 * as_number()
 

Please send me test-reports, your experiences with this and your ideas - I love
to hear about my work!

Tels <http://bloodgate.com/>
