This file contains all the CHANGES and bugfixes from original BigInt/BigFloat
to the rewritten one. For a complete list of changes see HISTORY:

v1.31:

 general:
  + It is subsequent faster than the original
  + regression test suite greatly enlarged to cover more problematic cases
  + added example scripts (prime.pl, bigprimes.pl, hailstone.pl)
  + documentation fixed and enhanced
  + BigInt is sub-classable with very little effort, see M::S or M::BF
  + subclasses of Math::BigInt know all the same methods, so that you can call
    $x->some_method() without knowing which type of class $x is
 caveats:
  + bstr() and stringify now drop the leading '+' (to make overloaded cmp work
    as expected when cmp'aring to scalars and other objects (read: bugfix)
 input:
  + spaces are no longer allowed in a number (but may precede or follow it)
  + _ (underscores) are now valid between any two digits
  + integers of the form 1E2, 1.23E2 etc are now valid input for BigInt.pm
 bugs and buglets fixed over Mark's original:
  + 0**0 gave NaN instead of 1
  + -1**y gave -1 instead of +1 for even y
  + mod/div for negative numbers were incompatible to Perl's way
  + added P. Prymmer's OS/390 '/1e5 vs *1e-5' patch w/o the performance snag
  + incorporated all the patches to the core modules by John Peacock
  + BigFloat::bxxx() works as well as BigFloat::fxxx()
  + Math::BigInt->new(10) / Math::BigFloat->new(2) returned NaN (ditto for
    other subclasses of Math::BigInt)
  + $a = new Math::BigInt; creates now a +0, while "" still gives a NaN
    This supresses all warnings on undef arguments. Wether this is better...	
  + import would always use "Math::BigInt" and give only one arg to new() as
    well as clash with Exporter
  + use Math::BigInt qw(bneg); $a = bneg('1234'); etc did not work at all
  + $x->xxx() now modifies $x in all cases of modifiers and actually returns
    the same $x (e.g. not a plain scalar or a different reference). All
    testing routines leave $x alone. bpow(), fround(), ffround() etc were
    broken in this regard.
 internal fixes:
  + uses a blessed hash ref instead scalar ref (easier subclassable)
  + my instead of local
  + use strict and -w
  + s/$[/0/ (after all, $[ = 1; in main does not effect this package)
  + $# partially removed ($#y is scalar @y -1, $#$y is scalar @$y-1 - ugh!)
  + added LICENSE section and file
 new modules (experimental):
  + Math::BigInt::Constant	- read-only BigInt's
  + Math::BigFraction		- 1 / 3 * 2 / 7 => 2 / 21
  + Math::Big			- usefull functions with big numbers
 new stuff:
  + bacmp (acmp), because needed for more efficient add()
  + bint() for writing shorter code (exportable new())
  + bzero(), bnan(), sign()
  + is_zero(), is_nan(), is_one(), is_odd(), is_even() for faster testing
  + digit(), as_number()
  + mantissa(), exponent(), parts(), length(), copy()
  + bgcd accepts now lists
  + blcm (also accepts lists)

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

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