Travis: update sanitizer configs

[openssl.git] / test / recipes / bc.pl

diff --git a/test/recipes/bc.pl b/test/recipes/bc.pl
index 29a4a8a84a0789064d04a86e4fd54ac6a70c2f0e..dbb5842bda7e5822a3c24c4bae1cc0103b968b86 100644 (file)
--- a/test/recipes/bc.pl
+++ b/test/recipes/bc.pl
@@ -1,4 +1,11 @@
-#! /usr/bin/perl
+#! /usr/bin/env perl
+# Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the OpenSSL license (the "License").  You may not use
+# this file except in compliance with the License.  You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
 
 use strict;
 use warnings;
@@ -46,7 +53,16 @@ sub __multiplier {
        if ($operator eq "*") {
            $operand1->bmul($operand2);
        } elsif ($operator eq "/") {
+           # Math::BigInt->bdiv() is documented to do floored division,
+           # i.e. 1 / -4 = -1, while bc and OpenSSL BN_div do truncated
+           # division, i.e. 1 / -4 = 0.  We need to make the operation
+           # work like OpenSSL's BN_div to be able to verify.
+           my $neg = ($operand1->is_neg()
+                      ? !$operand2->is_neg() : $operand2->is_neg());
+           $operand1->babs();
+           $operand2->babs();
            $operand1->bdiv($operand2);
+           if ($neg) { $operand1->bneg(); }
        } elsif ($operator eq "%") {
            # Here's a bit of a quirk...
            # With OpenSSL's BN, as well as bc, the result of -10 % 3 is -1