Commit | Line | Data |
062a4e99 |
1 | package Math::BigInt::FastCalc; |
2 | |
3 | use 5.005; |
4 | use strict; |
5 | # use warnings; # dont use warnings for older Perls |
6 | |
7 | use DynaLoader; |
8 | use Math::BigInt::Calc; |
9 | |
10 | use vars qw/@ISA $VERSION $BASE $BASE_LEN/; |
11 | |
12 | @ISA = qw(DynaLoader); |
13 | |
8a722a80 |
14 | $VERSION = '0.10_01'; |
062a4e99 |
15 | |
16 | bootstrap Math::BigInt::FastCalc $VERSION; |
17 | |
18 | ############################################################################## |
19 | # global constants, flags and accessory |
20 | |
21 | # announce that we are compatible with MBI v1.70 and up |
22 | sub api_version () { 1; } |
23 | |
24 | BEGIN |
25 | { |
26 | # use Calc to override the methods that we do not provide in XS |
27 | |
28 | for my $method (qw/ |
29 | new str |
30 | add sub mul div |
31 | rsft lsft |
32 | mod modpow modinv |
33 | gcd |
34 | pow root sqrt log_int fac |
35 | digit check |
36 | from_hex from_bin as_hex as_bin |
37 | zeros length base_len |
38 | xor or and |
39 | /) |
40 | { |
41 | no strict 'refs'; |
42 | *{'Math::BigInt::FastCalc::_' . $method} = \&{'Math::BigInt::Calc::_' . $method}; |
43 | } |
44 | my ($AND_BITS, $XOR_BITS, $OR_BITS, $BASE_LEN_SMALL, $MAX_VAL); |
45 | |
46 | # store BASE_LEN and BASE to later pass it to XS code |
47 | ($BASE_LEN, $AND_BITS, $XOR_BITS, $OR_BITS, $BASE_LEN_SMALL, $MAX_VAL, $BASE) = |
48 | Math::BigInt::Calc::_base_len(); |
49 | |
50 | } |
51 | |
52 | sub import |
53 | { |
54 | _set_XS_BASE($BASE, $BASE_LEN); |
55 | } |
56 | |
57 | ############################################################################## |
58 | ############################################################################## |
59 | |
60 | 1; |
61 | __END__ |
62 | |
63 | =head1 NAME |
64 | |
65 | Math::BigInt::FastCalc - Math::BigInt::Calc with some XS for more speed |
66 | |
67 | =head1 SYNOPSIS |
68 | |
69 | Provides support for big integer calculations. Not intended to be used by |
70 | other modules. Other modules which sport the same functions can also be used |
71 | to support Math::BigInt, like L<Math::BigInt::GMP> or L<Math::BigInt::Pari>. |
72 | |
73 | =head1 DESCRIPTION |
74 | |
75 | In order to allow for multiple big integer libraries, Math::BigInt was |
76 | rewritten to use library modules for core math routines. Any module which |
77 | follows the same API as this can be used instead by using the following: |
78 | |
79 | use Math::BigInt lib => 'libname'; |
80 | |
81 | 'libname' is either the long name ('Math::BigInt::Pari'), or only the short |
82 | version like 'Pari'. To use this library: |
83 | |
84 | use Math::BigInt lib => 'FastCalc'; |
85 | |
86 | Note that from L<Math::BigInt> v1.76 onwards, FastCalc will be loaded |
87 | automatically, if possible. |
88 | |
89 | =head1 STORAGE |
90 | |
91 | FastCalc works exactly like Calc, in stores the numbers in decimal form, |
92 | chopped into parts. |
93 | |
94 | =head1 METHODS |
95 | |
96 | The following functions are now implemented in FastCalc.xs: |
97 | |
98 | _is_odd _is_even _is_one _is_zero |
99 | _is_two _is_ten |
100 | _zero _one _two _ten |
101 | _acmp _len _num |
102 | _inc _dec |
103 | __strip_zeros _copy |
104 | |
105 | =head1 LICENSE |
106 | |
107 | This program is free software; you may redistribute it and/or modify it under |
108 | the same terms as Perl itself. |
109 | |
110 | =head1 AUTHORS |
111 | |
112 | Original math code by Mark Biggar, rewritten by Tels L<http://bloodgate.com/> |
113 | in late 2000. |
114 | Seperated from BigInt and shaped API with the help of John Peacock. |
115 | Fixed, sped-up and enhanced by Tels http://bloodgate.com 2001-2003. |
116 | Further streamlining (api_version 1 etc) by Tels 2004-2005. |
117 | |
118 | =head1 SEE ALSO |
119 | |
120 | L<Math::BigInt>, L<Math::BigFloat>, L<Math::BigInt::BitVect>, |
121 | L<Math::BigInt::GMP>, L<Math::BigInt::FastCalc> and L<Math::BigInt::Pari>. |
122 | |
123 | =cut |