Merge remote-tracking branch 'origin/master'

# Conflicts:
#	README.md

test/recipes/10-test_bn.t

@@ -0,0 +1,84 @@
+#! /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;
+
+use Math::BigInt;
+
+use OpenSSL::Test qw/:DEFAULT srctop_file/;
+
+setup("test_bn");
+
+plan tests => 3;
+
+require_ok(srctop_file("test","recipes","bc.pl"));
+
+my $testresults = "tmp.bntest";
+my $init = ok(run(test(["bntest"], stdout => $testresults)), 'initialize');
+
+ SKIP: {
+     skip "Initializing failed, skipping", 1 if !$init;
+
+     subtest 'Checking the bn results' => sub {
+	 my @lines = ();
+	 if (open DATA, $testresults) {
+	     @lines = <DATA>;
+	     close DATA;
+	 }
+	 map { s/\R//; } @lines;	# chomp(@lines);
+
+	 plan tests => scalar grep(/^print /, @lines);
+
+	 my $l = "";
+
+	 while (scalar @lines) {
+	     $l = shift @lines;
+
+	     last if $l =~ /^print /;
+	 }
+
+	 while (1) {
+	     $l =~ s/^print "//;
+	     $l =~ s/\\n"//;
+	     my $t = $l;
+	     my @operations = ();
+
+	     $l = undef;
+	     while (scalar @lines) {
+		 $l = shift @lines;
+
+		 last if $l =~ /^print /;
+		 push @operations, $l;
+		 $l = undef;
+	     }
+
+	     ok(check_operations(@operations), "verify $t");
+
+	     last unless $l;
+	 }
+     };
+ }
+
+unlink $testresults;
+
+sub check_operations {
+    my $failcount = 0;
+
+    foreach my $line (@_) {
+	my $result = calc(split /\s+/, $line);
+
+	if ($result ne "0" && $result ne "0x0") {
+	    $failcount++;
+	    print STDERR "Failed! $line => $result\n";
+	}
+    }
+
+    return $failcount == 0;
+}