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.\" ========================================================================
.\"
.IX Title "Math::BigInt::FastCalc 3"
.TH Math::BigInt::FastCalc 3 "2023-03-02" "perl v5.36.1" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.SH "NAME"
Math::BigInt::FastCalc \- Math::BigInt::Calc with some XS for more speed
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\& # to use it with Math::BigInt
\& use Math::BigInt lib => \*(AqFastCalc\*(Aq;
\&
\& # to use it with Math::BigFloat
\& use Math::BigFloat lib => \*(AqFastCalc\*(Aq;
\&
\& # to use it with Math::BigRat
\& use Math::BigRat lib => \*(AqFastCalc\*(Aq;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Math::BigInt::FastCalc inherits from Math::BigInt::Calc.
.PP
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.
.PP
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 \s-1API\s0 as this can be used instead by using the following:
.PP
.Vb 1
\& use Math::BigInt lib => \*(Aqlibname\*(Aq;
.Ve
.PP
\&'libname' is either the long name ('Math::BigInt::Pari'), or only the short
version like 'Pari'. To use this library:
.PP
.Vb 1
\& use Math::BigInt lib => \*(AqFastCalc\*(Aq;
.Ve
.PP
The default behaviour is to chose the best internal representation of big
integers, but the base length used in the internal representation can be
specified explicitly. Note that this must be done before Math::BigInt is loaded.
For example,
.PP
.Vb 2
\& use Math::BigInt::FastCalc base_len => 3;
\& use Math::BigInt lib => \*(AqFastCalc\*(Aq;
.Ve
.SH "STORAGE"
.IX Header "STORAGE"
Math::BigInt::FastCalc works exactly like Math::BigInt::Calc. Numbers are
stored in decimal form chopped into parts.
.SH "METHODS"
.IX Header "METHODS"
The following functions are now implemented in FastCalc.xs:
.PP
.Vb 6
\& _is_odd _is_even _is_one _is_zero
\& _is_two _is_ten
\& _zero _one _two _ten
\& _acmp _len
\& _inc _dec
\& _\|_strip_zeros _copy
.Ve
.SH "BUGS"
.IX Header "BUGS"
Please report any bugs or feature requests to
\&\f(CW\*(C`bug\-math\-bigint\-fastcalc at rt.cpan.org\*(C'\fR, or through the web interface at
<https://rt.cpan.org/Ticket/Create.html?Queue=Math\-BigInt\-FastCalc>
(requires login). We will be notified, and then you'll automatically be
notified of progress on your bug as I make changes.
.SH "SUPPORT"
.IX Header "SUPPORT"
After installing, you can find documentation for this module with the perldoc
command.
.PP
.Vb 1
\& perldoc Math::BigInt::FastCalc
.Ve
.PP
You can also look for information at:
.IP "GitHub" 4
.IX Item "GitHub"
<https://github.com/pjacklam/p5\-Math\-BigInt\-FastCalc>
.IP "\s-1RT: CPAN\s0's request tracker" 4
.IX Item "RT: CPAN's request tracker"
<https://rt.cpan.org/Dist/Display.html?Name=Math\-BigInt\-FastCalc>
.IP "MetaCPAN" 4
.IX Item "MetaCPAN"
<https://metacpan.org/release/Math\-BigInt\-FastCalc>
.IP "\s-1CPAN\s0 Testers Matrix" 4
.IX Item "CPAN Testers Matrix"
<http://matrix.cpantesters.org/?dist=Math\-BigInt\-FastCalc>
.IP "\s-1CPAN\s0 Ratings" 4
.IX Item "CPAN Ratings"
<https://cpanratings.perl.org/dist/Math\-BigInt\-FastCalc>
.SH "LICENSE"
.IX Header "LICENSE"
This program is free software; you may redistribute it and/or modify it under
the same terms as Perl itself.
.SH "AUTHORS"
.IX Header "AUTHORS"
Original math code by Mark Biggar, rewritten by Tels <http://bloodgate.com/>
in late 2000.
.PP
Separated from Math::BigInt and shaped \s-1API\s0 with the help of John Peacock.
.PP
Fixed, sped-up and enhanced by Tels http://bloodgate.com 2001\-2003.
Further streamlining (api_version 1 etc.) by Tels 2004\-2007.
.PP
Maintained by Peter John Acklam <pjacklam@gmail.com> 2010\-2021.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Math::BigInt::Lib for a description of the \s-1API.\s0
.PP
Alternative libraries Math::BigInt::Calc, Math::BigInt::GMP, and
Math::BigInt::Pari.
.PP
Some of the modules that use these libraries Math::BigInt,
Math::BigFloat, and Math::BigRat.