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-rw-r--r--cpan/bignum/lib/bigint.pm209
1 files changed, 104 insertions, 105 deletions
diff --git a/cpan/bignum/lib/bigint.pm b/cpan/bignum/lib/bigint.pm
index 8d7048b592..060ff4dda4 100644
--- a/cpan/bignum/lib/bigint.pm
+++ b/cpan/bignum/lib/bigint.pm
@@ -4,7 +4,7 @@ use 5.010;
use strict;
use warnings;
-our $VERSION = '0.51';
+our $VERSION = '0.53';
use Exporter;
our @ISA = qw( Exporter );
@@ -122,7 +122,7 @@ sub _hex_core {
# Strip off, clean, and parse as much as we can from the beginning.
my $x;
- if ($str =~ s/ ^ (0?[xX])? ( [0-9a-fA-F]* ( _ [0-9a-fA-F]+ )* ) //x) {
+ if ($str =~ s/ ^ ( 0? [xX] )? ( [0-9a-fA-F]* ( _ [0-9a-fA-F]+ )* ) //x) {
my $chrs = $2;
$chrs =~ tr/_//d;
$chrs = '0' unless CORE::length $chrs;
@@ -162,7 +162,7 @@ sub _oct_core {
# Strip off, clean, and parse as much as we can from the beginning.
- if ($str =~ s/ ^ (0?[bB])? ( [01]* ( _ [01]+ )* ) //x) {
+ if ($str =~ s/ ^ ( 0? [bB] )? ( [01]* ( _ [01]+ )* ) //x) {
my $chrs = $2;
$chrs =~ tr/_//d;
$chrs = '0' unless CORE::length $chrs;
@@ -183,21 +183,20 @@ sub _oct_core {
# Octal input. Strip off, clean, and parse as much as we can from the
# beginning.
- if ($str =~ s/ ^ ( [0-7]* ( _ [0-7]+ )* ) //x) {
- my $chrs = $1;
+ if ($str =~ s/ ^ ( 0? [oO] )? ( [0-7]* ( _ [0-7]+ )* ) //x) {
+ my $chrs = $2;
$chrs =~ tr/_//d;
$chrs = '0' unless CORE::length $chrs;
$x = Math::BigInt -> from_oct($chrs);
}
- # Warn about trailing garbage. CORE::oct() only warns about 8 and 9.
+ # Warn about trailing garbage. CORE::oct() only warns about 8 and 9, but it
+ # is more helpful to warn about all invalid digits.
if (CORE::length($str)) {
- my $chr = substr($str, 0, 1);
- if ($chr eq '8' || $chr eq '9') {
- require Carp;
- Carp::carp(sprintf("Illegal octal digit '%s' ignored", $chr));
- }
+ require Carp;
+ Carp::carp(sprintf("Illegal octal digit '%s' ignored",
+ substr($str, 0, 1)));
}
return $x;
@@ -384,23 +383,23 @@ bigint - Transparent BigInteger support for Perl
=head1 SYNOPSIS
- use bigint;
+ use bigint;
- $x = 2 + 4.5,"\n"; # BigInt 6
- print 2 ** 512,"\n"; # really is what you think it is
- print inf + 42,"\n"; # inf
- print NaN * 7,"\n"; # NaN
- print hex("0x1234567890123490"),"\n"; # Perl v5.10.0 or later
+ $x = 2 + 4.5,"\n"; # BigInt 6
+ print 2 ** 512,"\n"; # really is what you think it is
+ print inf + 42,"\n"; # inf
+ print NaN * 7,"\n"; # NaN
+ print hex("0x1234567890123490"),"\n"; # Perl v5.10.0 or later
- {
- no bigint;
- print 2 ** 256,"\n"; # a normal Perl scalar now
- }
+ {
+ no bigint;
+ print 2 ** 256,"\n"; # a normal Perl scalar now
+ }
- # Import into current package:
- use bigint qw/hex oct/;
- print hex("0x1234567890123490"),"\n";
- print oct("01234567890123490"),"\n";
+ # Import into current package:
+ use bigint qw/hex oct/;
+ print hex("0x1234567890123490"),"\n";
+ print oct("01234567890123490"),"\n";
=head1 DESCRIPTION
@@ -419,23 +418,23 @@ There is one small difference between C<use integer> and C<use bigint>: the
former will not affect assignments to variables and the return value of
some functions. C<bigint> truncates these results to integer too:
- # perl -Minteger -wle 'print 3.2'
- 3.2
- # perl -Minteger -wle 'print 3.2 + 0'
- 3
- # perl -Mbigint -wle 'print 3.2'
- 3
- # perl -Mbigint -wle 'print 3.2 + 0'
- 3
-
- # perl -Mbigint -wle 'print exp(1) + 0'
- 2
- # perl -Mbigint -wle 'print exp(1)'
- 2
- # perl -Minteger -wle 'print exp(1)'
- 2.71828182845905
- # perl -Minteger -wle 'print exp(1) + 0'
- 2
+ # perl -Minteger -wle 'print 3.2'
+ 3.2
+ # perl -Minteger -wle 'print 3.2 + 0'
+ 3
+ # perl -Mbigint -wle 'print 3.2'
+ 3
+ # perl -Mbigint -wle 'print 3.2 + 0'
+ 3
+
+ # perl -Mbigint -wle 'print exp(1) + 0'
+ 2
+ # perl -Mbigint -wle 'print exp(1)'
+ 2
+ # perl -Minteger -wle 'print exp(1)'
+ 2.71828182845905
+ # perl -Minteger -wle 'print exp(1) + 0'
+ 2
In practice this makes seldom a difference as B<parts and results> of
expressions will be truncated anyway, but this can, for instance, affect the
@@ -459,7 +458,7 @@ The following options exist:
This sets the accuracy for all math operations. The argument must be greater
than or equal to zero. See Math::BigInt's bround() function for details.
- perl -Mbigint=a,2 -le 'print 12345+1'
+ perl -Mbigint=a,2 -le 'print 12345+1'
Note that setting precision and accuracy at the same time is not possible.
@@ -473,7 +472,7 @@ integer and are ignore like negative values.
See Math::BigInt's bfround() function for details.
- perl -Mbignum=p,5 -le 'print 123456789+123'
+ perl -Mbignum=p,5 -le 'print 123456789+123'
Note that setting precision and accuracy at the same time is not possible.
@@ -500,14 +499,14 @@ overridden in the current scope whenever the bigint pragma is active.
Load a different math lib, see L<Math Library>.
- perl -Mbigint=lib,GMP -e 'print 2 ** 512'
- perl -Mbigint=try,GMP -e 'print 2 ** 512'
- perl -Mbigint=only,GMP -e 'print 2 ** 512'
+ perl -Mbigint=lib,GMP -e 'print 2 ** 512'
+ perl -Mbigint=try,GMP -e 'print 2 ** 512'
+ perl -Mbigint=only,GMP -e 'print 2 ** 512'
Currently there is no way to specify more than one library on the command
line. This means the following does not work:
- perl -Mbignum=l,GMP,Pari -e 'print 2 ** 512'
+ perl -Mbignum=l,GMP,Pari -e 'print 2 ** 512'
This will be hopefully fixed soon ;)
@@ -515,7 +514,7 @@ This will be hopefully fixed soon ;)
This prints out the name and version of all modules used and then exits.
- perl -Mbigint=v
+ perl -Mbigint=v
=back
@@ -524,26 +523,26 @@ This prints out the name and version of all modules used and then exits.
Math with the numbers is done (by default) by a module called
Math::BigInt::Calc. This is equivalent to saying:
- use bigint lib => 'Calc';
+ use bigint lib => 'Calc';
You can change this by using:
- use bignum lib => 'GMP';
+ use bignum lib => 'GMP';
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 bigint lib => 'Foo,Math::BigInt::Bar';
+ use bigint lib => 'Foo,Math::BigInt::Bar';
Using C<lib> warns if none of the specified libraries can be found and
L<Math::BigInt> did fall back to one of the default libraries.
To suppress this warning, use C<try> instead:
- use bignum try => 'GMP';
+ use bignum try => 'GMP';
If you want the code to die instead of falling back, use C<only> instead:
- use bignum only => 'GMP';
+ use bignum only => 'GMP';
Please see respective module documentation for further details.
@@ -578,31 +577,31 @@ notation, though.
But a warning is in order. When using the following to make a copy of a number,
only a shallow copy will be made.
- $x = 9; $y = $x;
- $x = $y = 7;
+ $x = 9; $y = $x;
+ $x = $y = 7;
Using the copy or the original with overloaded math is okay, e.g. the
following work:
- $x = 9; $y = $x;
- print $x + 1, " ", $y,"\n"; # prints 10 9
+ $x = 9; $y = $x;
+ print $x + 1, " ", $y,"\n"; # prints 10 9
but calling any method that modifies the number directly will result in
B<both> the original and the copy being destroyed:
- $x = 9; $y = $x;
- print $x->badd(1), " ", $y,"\n"; # prints 10 10
+ $x = 9; $y = $x;
+ print $x->badd(1), " ", $y,"\n"; # prints 10 10
- $x = 9; $y = $x;
- print $x->binc(1), " ", $y,"\n"; # prints 10 10
+ $x = 9; $y = $x;
+ print $x->binc(1), " ", $y,"\n"; # prints 10 10
- $x = 9; $y = $x;
- print $x->bmul(2), " ", $y,"\n"; # prints 18 18
+ $x = 9; $y = $x;
+ print $x->bmul(2), " ", $y,"\n"; # prints 18 18
Using methods that do not modify, but test that the contents works:
- $x = 9; $y = $x;
- $z = 9 if $x->is_zero(); # works fine
+ $x = 9; $y = $x;
+ $z = 9 if $x->is_zero(); # works fine
See the documentation about the copy constructor and C<=> in overload, as
well as the documentation in BigInt for further details.
@@ -623,21 +622,21 @@ handle bareword C<NaN> properly.
=item e
- # perl -Mbigint=e -wle 'print e'
+ # perl -Mbigint=e -wle 'print e'
Returns Euler's number C<e>, aka exp(1). Note that under bigint, this is
truncated to an integer, and hence simple '2'.
=item PI
- # perl -Mbigint=PI -wle 'print PI'
+ # perl -Mbigint=PI -wle 'print PI'
Returns PI. Note that under bigint, this is truncated to an integer, and hence
simple '3'.
=item bexp()
- bexp($power,$accuracy);
+ bexp($power,$accuracy);
Returns Euler's number C<e> raised to the appropriate power, to
the wanted accuracy.
@@ -646,18 +645,18 @@ Note that under bigint, the result is truncated to an integer.
Example:
- # perl -Mbigint=bexp -wle 'print bexp(1,80)'
+ # perl -Mbigint=bexp -wle 'print bexp(1,80)'
=item bpi()
- bpi($accuracy);
+ bpi($accuracy);
Returns PI to the wanted accuracy. Note that under bigint, this is truncated
to an integer, and hence simple '3'.
Example:
- # perl -Mbigint=bpi -wle 'print bpi(80)'
+ # perl -Mbigint=bpi -wle 'print bpi(80)'
=item upgrade()
@@ -666,13 +665,13 @@ C<$Math::BigInt::upgrade>.
=item in_effect()
- use bigint;
+ use bigint;
- print "in effect\n" if bigint::in_effect; # true
- {
- no bigint;
- print "in effect\n" if bigint::in_effect; # false
- }
+ print "in effect\n" if bigint::in_effect; # true
+ {
+ no bigint;
+ print "in effect\n" if bigint::in_effect; # false
+ }
Returns true or false if C<bigint> is in effect in the current scope.
@@ -710,13 +709,13 @@ C<Math::BigInt> objects, use a literal number in the expression:
Perl does not allow overloading of ranges, so you can neither safely use
ranges with bigint endpoints, nor is the iterator variable a bigint.
- use 5.010;
- for my $i (12..13) {
- for my $j (20..21) {
- say $i ** $j; # produces a floating-point number,
- # not a big integer
- }
- }
+ use 5.010;
+ for my $i (12..13) {
+ for my $j (20..21) {
+ say $i ** $j; # produces a floating-point number,
+ # not a big integer
+ }
+ }
=item in_effect()
@@ -730,22 +729,22 @@ will not happen unless you specifically ask for it with the two
import tags "hex" and "oct" - and then it will be global and cannot be
disabled inside a scope with "no bigint":
- use bigint qw/hex oct/;
+ use bigint qw/hex oct/;
+ print hex("0x1234567890123456");
+ {
+ no bigint;
print hex("0x1234567890123456");
- {
- no bigint;
- print hex("0x1234567890123456");
- }
+ }
The second call to hex() will warn about a non-portable constant.
Compare this to:
- use bigint;
+ use bigint;
- # will warn only under Perl older than v5.9.4
- print hex("0x1234567890123456");
+ # will warn only under Perl older than v5.9.4
+ print hex("0x1234567890123456");
=back
@@ -757,23 +756,23 @@ the others to do the work.
The following modules are currently used by bigint:
- Math::BigInt::Lite (for speed, and only if it is loadable)
- Math::BigInt
+ Math::BigInt::Lite (for speed, and only if it is loadable)
+ Math::BigInt
=head1 EXAMPLES
Some cool command line examples to impress the Python crowd ;) You might want
to compare them to the results under -Mbignum or -Mbigrat:
- perl -Mbigint -le 'print sqrt(33)'
- perl -Mbigint -le 'print 2*255'
- perl -Mbigint -le 'print 4.5+2*255'
- perl -Mbigint -le 'print 3/7 + 5/7 + 8/3'
- perl -Mbigint -le 'print 123->is_odd()'
- perl -Mbigint -le 'print log(2)'
- perl -Mbigint -le 'print 2 ** 0.5'
- perl -Mbigint=a,65 -le 'print 2 ** 0.2'
- perl -Mbignum=a,65,l,GMP -le 'print 7 ** 7777'
+ perl -Mbigint -le 'print sqrt(33)'
+ perl -Mbigint -le 'print 2*255'
+ perl -Mbigint -le 'print 4.5+2*255'
+ perl -Mbigint -le 'print 3/7 + 5/7 + 8/3'
+ perl -Mbigint -le 'print 123->is_odd()'
+ perl -Mbigint -le 'print log(2)'
+ perl -Mbigint -le 'print 2 ** 0.5'
+ perl -Mbigint=a,65 -le 'print 2 ** 0.2'
+ perl -Mbignum=a,65,l,GMP -le 'print 7 ** 7777'
=head1 BUGS
@@ -815,7 +814,7 @@ L<Math::BigInt::FastCalc>, L<Math::BigInt::Pari> and L<Math::BigInt::GMP>.
=item *
-Maintained by Peter John Acklam E<lt>pjacklam@gmail.com<gt>, 2014-.
+Maintained by Peter John Acklam E<lt>pjacklam@gmail.comE<gt>, 2014-.
=back
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