/usr/share/perl5/BSON/Double.pm is in libbson-perl 1.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 | use 5.010001;
use strict;
use warnings;
package BSON::Double;
# ABSTRACT: BSON type wrapper for Double
use version;
our $VERSION = 'v1.4.0';
use Carp;
#pod =attr value
#pod
#pod A numeric scalar (or the special strings "Inf", "-Inf" or "NaN"). This
#pod will be coerced to Perl's numeric type. The default is 0.0.
#pod
#pod =cut
use Moo;
has 'value' => (
is => 'ro'
);
use namespace::clean -except => 'meta';
use constant {
nInf => unpack("d<",pack("H*","000000000000f0ff")),
pInf => unpack("d<",pack("H*","000000000000f07f")),
NaN => unpack("d<",pack("H*","000000000000f8ff")),
};
sub BUILD {
my $self = shift;
# coerce to NV internally
$self->{value} = defined( $self->{value} ) ? $self->{value} / 1.0 : 0.0;
}
#pod =method TO_JSON
#pod
#pod Returns a double, unless the value is 'Inf', '-Inf' or 'NaN'
#pod (which are illegal in JSON), in which case an exception is thrown.
#pod
#pod =cut
my $win32_specials = qr/-?1.\#IN[DF]/i;
my $unix_specials = qr/-?(?:inf|nan)/i;
my $illegal = $^O eq 'MSWin32' && $] lt "5.022" ? qr/^$win32_specials/ : qr/^$unix_specials/;
sub TO_JSON {
my $copy = "$_[0]->{value}"; # avoid changing value to PVNV
return $_[0]->{value}/1.0 unless $copy =~ $illegal;
croak( "The value '$copy' is illegal in JSON" );
}
use overload (
# Unary
q{""} => sub { "$_[0]->{value}" },
q{0+} => sub { $_[0]->{value} },
q{~} => sub { ~( $_[0]->{value} ) },
# Binary
( map { $_ => eval "sub { return \$_[0]->{value} $_ \$_[1] }" } qw( + * ) ), ## no critic
(
map {
$_ => eval ## no critic
"sub { return \$_[2] ? \$_[1] $_ \$_[0]->{value} : \$_[0]->{value} $_ \$_[1] }"
} qw( - / % ** << >> x <=> cmp & | ^ )
),
(
map { $_ => eval "sub { return $_(\$_[0]->{value}) }" } ## no critic
qw( cos sin exp log sqrt int )
),
q{atan2} => sub {
return $_[2] ? atan2( $_[1], $_[0]->{value} ) : atan2( $_[0]->{value}, $_[1] );
},
# Special
fallback => 1,
);
1;
=pod
=encoding UTF-8
=head1 NAME
BSON::Double - BSON type wrapper for Double
=head1 VERSION
version v1.4.0
=head1 SYNOPSIS
use BSON::Types ':all';
my $bytes = bson_double( $number );
=head1 DESCRIPTION
This module provides a BSON type wrapper for a numeric value that
would be represented in BSON as a double.
=head1 ATTRIBUTES
=head2 value
A numeric scalar (or the special strings "Inf", "-Inf" or "NaN"). This
will be coerced to Perl's numeric type. The default is 0.0.
=head1 METHODS
=head2 TO_JSON
Returns a double, unless the value is 'Inf', '-Inf' or 'NaN'
(which are illegal in JSON), in which case an exception is thrown.
=for Pod::Coverage BUILD nInf pInf NaN
=head1 INFINITY AND NAN
Some Perls may not support converting "Inf" or "NaN" strings to their
double equivalent. They are available as functions from the L<POSIX>
module, but as a lighter alternative to POSIX, the following functions are
available:
=over 4
=item *
BSON::Double::pInf() – positive infinity
=item *
BSON::Double::nInf() – negative infinity
=item *
BSON::Double::NaN() – not-a-number
=back
=head1 OVERLOADING
The numification operator, C<0+> is overloaded to return the C<value>,
the full "minimal set" of overloaded operations is provided (per L<overload>
documentation) and fallback overloading is enabled.
=head1 AUTHORS
=over 4
=item *
David Golden <david@mongodb.com>
=item *
Stefan G. <minimalist@lavabit.com>
=back
=head1 COPYRIGHT AND LICENSE
This software is Copyright (c) 2017 by Stefan G. and MongoDB, Inc.
This is free software, licensed under:
The Apache License, Version 2.0, January 2004
=cut
__END__
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