math::bigint::fastcalc(3pm) [suse man page]

Math::BigInt::FastCalc(3pm)				 Perl Programmers Reference Guide			       Math::BigInt::FastCalc(3pm)

NAME

       Math::BigInt::FastCalc - Math::BigInt::Calc with some XS for more speed

SYNOPSIS

       Provides support for big integer calculations. Not intended to be used by other modules. Other modules which sport the same functions can
       also be used to support Math::BigInt, like Math::BigInt::GMP or Math::BigInt::Pari.

DESCRIPTION

       In order to allow for multiple big integer libraries, Math::BigInt was rewritten to use library modules for core math routines. Any module
       which follows the same API as this can be used instead by using the following:

	       use Math::BigInt lib => 'libname';

       'libname' is either the long name ('Math::BigInt::Pari'), or only the short version like 'Pari'. To use this library:

	       use Math::BigInt lib => 'FastCalc';

       Note that from Math::BigInt v1.76 onwards, FastCalc will be loaded automatically, if possible.

STORAGE

       FastCalc works exactly like Calc, in stores the numbers in decimal form, chopped into parts.

METHODS

       The following functions are now implemented in FastCalc.xs:

	       _is_odd	       _is_even        _is_one	       _is_zero
	       _is_two	       _is_ten
	       _zero	       _one	       _two	       _ten
	       _acmp	       _len	       _num
	       _inc	       _dec
	       __strip_zeros   _copy

LICENSE

       This program is free software; you may redistribute it and/or modify it under the same terms as Perl itself.

AUTHORS

       Original math code by Mark Biggar, rewritten by Tels <http://bloodgate.com/> in late 2000.  Seperated from BigInt and shaped API with the
       help of John Peacock.  Fixed, sped-up and enhanced by Tels http://bloodgate.com 2001-2003.  Further streamlining (api_version 1 etc.) by
       Tels 2004-2007.

SEE ALSO

       Math::BigInt, Math::BigFloat, Math::BigInt::GMP, Math::BigInt::FastCalc and Math::BigInt::Pari.

perl v5.12.1							    2010-04-26					       Math::BigInt::FastCalc(3pm)

bigrat(3pm)						 Perl Programmers Reference Guide					       bigrat(3pm)

NAME

       bigrat - Transparent BigNumber/BigRationale support for Perl

SYNOPSIS

	 use bigrat;

	 $x = 2 + 4.5,"
";		       # BigFloat 6.5
	 print 1/3 + 1/4,"
";		       # produces 7/12

DESCRIPTION

       All operators (inlcuding basic math operations) are overloaded. Integer and floating-point constants are created as proper BigInts or
       BigFloats, respectively.

       Other than bignum, this module upgrades to Math::BigRat, meaning that instead of 2.5 you will get 2+1/2 as output.

       MODULES USED

       "bigrat" is just a thin wrapper around various modules of the Math::BigInt family. Think of it as the head of the family, who runs the
       shop, and orders the others to do the work.

       The following modules are currently used by bignum:

	       Math::BigInt::Lite      (for speed, and only if it is loadable)
	       Math::BigInt
	       Math::BigFloat
	       Math::BigRat

       MATH LIBRARY

       Math with the numbers is done (by default) by a module called Math::BigInt::Calc. This is equivalent to saying:

	       use bigrat lib => 'Calc';

       You can change this by using:

	       use bigrat lib => 'BitVect';

       The following would first try to find Math::BigInt::Foo, then Math::BigInt::Bar, and when this also fails, revert to Math::BigInt::Calc:

	       use bigrat lib => 'Foo,Math::BigInt::Bar';

       Please see respective module documentation for further details.

       SIGN

       The sign is either '+', '-', 'NaN', '+inf' or '-inf' and stored seperately.

       A sign of 'NaN' is used to represent the result when input arguments are not numbers or as a result of 0/0. '+inf' and '-inf' represent
       plus respectively minus infinity. You will get '+inf' when dividing a positive number by 0, and '-inf' when dividing any negative number by
       0.

       METHODS

       Since all numbers are not objects, you can use all functions that are part of the BigInt or BigFloat API. It is wise to use only the bxxx()
       notation, and not the fxxx() notation, though. This makes you independed on the fact that the underlying object might morph into a differ-
       ent class than BigFloat.

EXAMPLES

	       perl -Mbigrat -le 'print sqrt(33)'
	       perl -Mbigrat -le 'print 2*255'
	       perl -Mbigrat -le 'print 4.5+2*255'
	       perl -Mbigrat -le 'print 3/7 + 5/7 + 8/3'
	       perl -Mbigrat -le 'print 12->is_odd()';

LICENSE

       This program is free software; you may redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

       Especially bignum.

       Math::BigFloat, Math::BigInt, Math::BigRat and Math::Big as well as Math::BigInt::BitVect, Math::BigInt::Pari and  Math::BigInt::GMP.

AUTHORS

       (C) by Tels <http://bloodgate.com/> in early 2002.

perl v5.8.0							    2002-06-01							       bigrat(3pm)