#!/pro/bin/perl
use 5.18.3;
use warnings;
use Config;
use Fcntl;
printf "Perl $^V %s ivsize %d byteorder %d\n",
@Config{qw( archname ivsize byteorder )};
# Generate a "binary file" with a string of bytes likely to show up is
+sues in
# decoding
my $binary = "\x91\x34\x33\x90\x81\x32\x31\x80";
for ([ "BE32" => "I>I>" ],
[ "LE32" => "I<I<" ],
[ "BE64" => "Q>" ],
[ "LE64" => "Q<" ],
) {
my ($type, $format) = @$_;
my $data = pack $format => 0, 0;
open my $fh, "<", \$binary;
read $fh, $data, length $data;
my @x = unpack $format => $data;
if (@x == 2) {
printf "%s\: %08x%08x\n", $type, @x;
}
else {
printf "%s\: %016x\n", $type, @x;
}
}
=>
BE32: 9134339081323180
LE32: 9033349180313281
BE64: 9134339081323180
LE64: 8031328190333491
Enjoy, Have FUN! H.Merijn
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