Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/mysql-test/suite/innodb/include/crc32.pl b/mysql-test/suite/innodb/include/crc32.pl
new file mode 100644
index 00000000..c2bce09d
--- /dev/null
+++ b/mysql-test/suite/innodb/include/crc32.pl
@@ -0,0 +1,33 @@
+# The following is Public Domain / Creative Commons CC0 from
+# http://billauer.co.il/blog/2011/05/perl-crc32-crc-xs-module/
+
+sub mycrc32 {
+ my ($input, $init_value, $polynomial) = @_;
+
+ $init_value = 0 unless (defined $init_value);
+ $polynomial = 0xedb88320 unless (defined $polynomial);
+
+ my @lookup_table;
+
+ for (my $i=0; $i<256; $i++) {
+   my $x = $i;
+   for (my $j=0; $j<8; $j++) {
+     if ($x & 1) {
+       $x = ($x >> 1) ^ $polynomial;
+     } else {
+       $x = $x >> 1;
+     }
+   }
+   push @lookup_table, $x;
+ }
+
+ my $crc = $init_value ^ 0xffffffff;
+
+ foreach my $x (unpack ('C*', $input)) {
+   $crc = (($crc >> 8) & 0xffffff) ^ $lookup_table[ ($crc ^ $x) & 0xff ];
+ }
+
+ $crc = $crc ^ 0xffffffff;
+
+ return $crc;
+}