//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Copyright 2020, Intel Corporation
//
// Modified to test pmem::obj containers
//

// <string_view>

// constexpr int compare(size_type pos1, size_type n1,
//             const charT* s, size_type n2) const;

#include "unittest.hpp"

#include <libpmemobj++/string_view.hpp>
#include <stdexcept>

int
sign(int x)
{
	return x > 0 ? 1 : (x < 0 ? -1 : 0);
}

template <typename CharT>
void
test1(pmem::obj::basic_string_view<CharT> sv1, size_t pos1, size_t n1,
      const CharT *s2, size_t n2, int expected)
{
	try {
		UT_ASSERT(sign(sv1.compare(pos1, n1, s2, n2)) ==
			  sign(expected));
		UT_ASSERT(pos1 <= sv1.size());
	} catch (const std::out_of_range &) {
		UT_ASSERT(pos1 > sv1.size());
	}
}

template <typename CharT>
void
test(const CharT *s1, size_t pos1, size_t n1, const CharT *s2, size_t n2,
     int expected)
{
	typedef pmem::obj::basic_string_view<CharT> string_view_t;
	string_view_t sv1(s1);
	test1(sv1, pos1, n1, s2, n2, expected);
}

void
test0()
{
	test("", 0, 0, "", 0, 0);
	test("", 0, 0, "abcde", 0, 0);
	test("", 0, 0, "abcde", 1, -1);
	test("", 0, 0, "abcde", 2, -2);
	test("", 0, 0, "abcde", 4, -4);
	test("", 0, 0, "abcde", 5, -5);
	test("", 0, 0, "abcdefghij", 0, 0);
	test("", 0, 0, "abcdefghij", 1, -1);
	test("", 0, 0, "abcdefghij", 5, -5);
	test("", 0, 0, "abcdefghij", 9, -9);
	test("", 0, 0, "abcdefghij", 10, -10);
	test("", 0, 0, "abcdefghijklmnopqrst", 0, 0);
	test("", 0, 0, "abcdefghijklmnopqrst", 1, -1);
	test("", 0, 0, "abcdefghijklmnopqrst", 10, -10);
	test("", 0, 0, "abcdefghijklmnopqrst", 19, -19);
	test("", 0, 0, "abcdefghijklmnopqrst", 20, -20);
	test("", 0, 1, "", 0, 0);
	test("", 0, 1, "abcde", 0, 0);
	test("", 0, 1, "abcde", 1, -1);
	test("", 0, 1, "abcde", 2, -2);
	test("", 0, 1, "abcde", 4, -4);
	test("", 0, 1, "abcde", 5, -5);
	test("", 0, 1, "abcdefghij", 0, 0);
	test("", 0, 1, "abcdefghij", 1, -1);
	test("", 0, 1, "abcdefghij", 5, -5);
	test("", 0, 1, "abcdefghij", 9, -9);
	test("", 0, 1, "abcdefghij", 10, -10);
	test("", 0, 1, "abcdefghijklmnopqrst", 0, 0);
	test("", 0, 1, "abcdefghijklmnopqrst", 1, -1);
	test("", 0, 1, "abcdefghijklmnopqrst", 10, -10);
	test("", 0, 1, "abcdefghijklmnopqrst", 19, -19);
	test("", 0, 1, "abcdefghijklmnopqrst", 20, -20);
	test("", 1, 0, "", 0, 0);
	test("", 1, 0, "abcde", 0, 0);
	test("", 1, 0, "abcde", 1, 0);
	test("", 1, 0, "abcde", 2, 0);
	test("", 1, 0, "abcde", 4, 0);
	test("", 1, 0, "abcde", 5, 0);
	test("", 1, 0, "abcdefghij", 0, 0);
	test("", 1, 0, "abcdefghij", 1, 0);
	test("", 1, 0, "abcdefghij", 5, 0);
	test("", 1, 0, "abcdefghij", 9, 0);
	test("", 1, 0, "abcdefghij", 10, 0);
	test("", 1, 0, "abcdefghijklmnopqrst", 0, 0);
	test("", 1, 0, "abcdefghijklmnopqrst", 1, 0);
	test("", 1, 0, "abcdefghijklmnopqrst", 10, 0);
	test("", 1, 0, "abcdefghijklmnopqrst", 19, 0);
	test("", 1, 0, "abcdefghijklmnopqrst", 20, 0);
	test("abcde", 0, 0, "", 0, 0);
	test("abcde", 0, 0, "abcde", 0, 0);
	test("abcde", 0, 0, "abcde", 1, -1);
	test("abcde", 0, 0, "abcde", 2, -2);
	test("abcde", 0, 0, "abcde", 4, -4);
	test("abcde", 0, 0, "abcde", 5, -5);
	test("abcde", 0, 0, "abcdefghij", 0, 0);
	test("abcde", 0, 0, "abcdefghij", 1, -1);
	test("abcde", 0, 0, "abcdefghij", 5, -5);
	test("abcde", 0, 0, "abcdefghij", 9, -9);
	test("abcde", 0, 0, "abcdefghij", 10, -10);
	test("abcde", 0, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcde", 0, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcde", 0, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcde", 0, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcde", 0, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcde", 0, 1, "", 0, 1);
	test("abcde", 0, 1, "abcde", 0, 1);
	test("abcde", 0, 1, "abcde", 1, 0);
	test("abcde", 0, 1, "abcde", 2, -1);
	test("abcde", 0, 1, "abcde", 4, -3);
	test("abcde", 0, 1, "abcde", 5, -4);
	test("abcde", 0, 1, "abcdefghij", 0, 1);
	test("abcde", 0, 1, "abcdefghij", 1, 0);
	test("abcde", 0, 1, "abcdefghij", 5, -4);
	test("abcde", 0, 1, "abcdefghij", 9, -8);
	test("abcde", 0, 1, "abcdefghij", 10, -9);
	test("abcde", 0, 1, "abcdefghijklmnopqrst", 0, 1);
	test("abcde", 0, 1, "abcdefghijklmnopqrst", 1, 0);
	test("abcde", 0, 1, "abcdefghijklmnopqrst", 10, -9);
	test("abcde", 0, 1, "abcdefghijklmnopqrst", 19, -18);
	test("abcde", 0, 1, "abcdefghijklmnopqrst", 20, -19);
	test("abcde", 0, 2, "", 0, 2);
	test("abcde", 0, 2, "abcde", 0, 2);
	test("abcde", 0, 2, "abcde", 1, 1);
	test("abcde", 0, 2, "abcde", 2, 0);
	test("abcde", 0, 2, "abcde", 4, -2);
	test("abcde", 0, 2, "abcde", 5, -3);
	test("abcde", 0, 2, "abcdefghij", 0, 2);
	test("abcde", 0, 2, "abcdefghij", 1, 1);
	test("abcde", 0, 2, "abcdefghij", 5, -3);
	test("abcde", 0, 2, "abcdefghij", 9, -7);
	test("abcde", 0, 2, "abcdefghij", 10, -8);
	test("abcde", 0, 2, "abcdefghijklmnopqrst", 0, 2);
	test("abcde", 0, 2, "abcdefghijklmnopqrst", 1, 1);
	test("abcde", 0, 2, "abcdefghijklmnopqrst", 10, -8);
	test("abcde", 0, 2, "abcdefghijklmnopqrst", 19, -17);
	test("abcde", 0, 2, "abcdefghijklmnopqrst", 20, -18);
	test("abcde", 0, 4, "", 0, 4);
	test("abcde", 0, 4, "abcde", 0, 4);
	test("abcde", 0, 4, "abcde", 1, 3);
	test("abcde", 0, 4, "abcde", 2, 2);
}

void
test1()
{
	test("abcde", 0, 4, "abcde", 4, 0);
	test("abcde", 0, 4, "abcde", 5, -1);
	test("abcde", 0, 4, "abcdefghij", 0, 4);
	test("abcde", 0, 4, "abcdefghij", 1, 3);
	test("abcde", 0, 4, "abcdefghij", 5, -1);
	test("abcde", 0, 4, "abcdefghij", 9, -5);
	test("abcde", 0, 4, "abcdefghij", 10, -6);
	test("abcde", 0, 4, "abcdefghijklmnopqrst", 0, 4);
	test("abcde", 0, 4, "abcdefghijklmnopqrst", 1, 3);
	test("abcde", 0, 4, "abcdefghijklmnopqrst", 10, -6);
	test("abcde", 0, 4, "abcdefghijklmnopqrst", 19, -15);
	test("abcde", 0, 4, "abcdefghijklmnopqrst", 20, -16);
	test("abcde", 0, 5, "", 0, 5);
	test("abcde", 0, 5, "abcde", 0, 5);
	test("abcde", 0, 5, "abcde", 1, 4);
	test("abcde", 0, 5, "abcde", 2, 3);
	test("abcde", 0, 5, "abcde", 4, 1);
	test("abcde", 0, 5, "abcde", 5, 0);
	test("abcde", 0, 5, "abcdefghij", 0, 5);
	test("abcde", 0, 5, "abcdefghij", 1, 4);
	test("abcde", 0, 5, "abcdefghij", 5, 0);
	test("abcde", 0, 5, "abcdefghij", 9, -4);
	test("abcde", 0, 5, "abcdefghij", 10, -5);
	test("abcde", 0, 5, "abcdefghijklmnopqrst", 0, 5);
	test("abcde", 0, 5, "abcdefghijklmnopqrst", 1, 4);
	test("abcde", 0, 5, "abcdefghijklmnopqrst", 10, -5);
	test("abcde", 0, 5, "abcdefghijklmnopqrst", 19, -14);
	test("abcde", 0, 5, "abcdefghijklmnopqrst", 20, -15);
	test("abcde", 0, 6, "", 0, 5);
	test("abcde", 0, 6, "abcde", 0, 5);
	test("abcde", 0, 6, "abcde", 1, 4);
	test("abcde", 0, 6, "abcde", 2, 3);
	test("abcde", 0, 6, "abcde", 4, 1);
	test("abcde", 0, 6, "abcde", 5, 0);
	test("abcde", 0, 6, "abcdefghij", 0, 5);
	test("abcde", 0, 6, "abcdefghij", 1, 4);
	test("abcde", 0, 6, "abcdefghij", 5, 0);
	test("abcde", 0, 6, "abcdefghij", 9, -4);
	test("abcde", 0, 6, "abcdefghij", 10, -5);
	test("abcde", 0, 6, "abcdefghijklmnopqrst", 0, 5);
	test("abcde", 0, 6, "abcdefghijklmnopqrst", 1, 4);
	test("abcde", 0, 6, "abcdefghijklmnopqrst", 10, -5);
	test("abcde", 0, 6, "abcdefghijklmnopqrst", 19, -14);
	test("abcde", 0, 6, "abcdefghijklmnopqrst", 20, -15);
	test("abcde", 1, 0, "", 0, 0);
	test("abcde", 1, 0, "abcde", 0, 0);
	test("abcde", 1, 0, "abcde", 1, -1);
	test("abcde", 1, 0, "abcde", 2, -2);
	test("abcde", 1, 0, "abcde", 4, -4);
	test("abcde", 1, 0, "abcde", 5, -5);
	test("abcde", 1, 0, "abcdefghij", 0, 0);
	test("abcde", 1, 0, "abcdefghij", 1, -1);
	test("abcde", 1, 0, "abcdefghij", 5, -5);
	test("abcde", 1, 0, "abcdefghij", 9, -9);
	test("abcde", 1, 0, "abcdefghij", 10, -10);
	test("abcde", 1, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcde", 1, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcde", 1, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcde", 1, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcde", 1, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcde", 1, 1, "", 0, 1);
	test("abcde", 1, 1, "abcde", 0, 1);
	test("abcde", 1, 1, "abcde", 1, 1);
	test("abcde", 1, 1, "abcde", 2, 1);
	test("abcde", 1, 1, "abcde", 4, 1);
	test("abcde", 1, 1, "abcde", 5, 1);
	test("abcde", 1, 1, "abcdefghij", 0, 1);
	test("abcde", 1, 1, "abcdefghij", 1, 1);
	test("abcde", 1, 1, "abcdefghij", 5, 1);
	test("abcde", 1, 1, "abcdefghij", 9, 1);
	test("abcde", 1, 1, "abcdefghij", 10, 1);
	test("abcde", 1, 1, "abcdefghijklmnopqrst", 0, 1);
	test("abcde", 1, 1, "abcdefghijklmnopqrst", 1, 1);
	test("abcde", 1, 1, "abcdefghijklmnopqrst", 10, 1);
	test("abcde", 1, 1, "abcdefghijklmnopqrst", 19, 1);
	test("abcde", 1, 1, "abcdefghijklmnopqrst", 20, 1);
	test("abcde", 1, 2, "", 0, 2);
	test("abcde", 1, 2, "abcde", 0, 2);
	test("abcde", 1, 2, "abcde", 1, 1);
	test("abcde", 1, 2, "abcde", 2, 1);
	test("abcde", 1, 2, "abcde", 4, 1);
	test("abcde", 1, 2, "abcde", 5, 1);
	test("abcde", 1, 2, "abcdefghij", 0, 2);
	test("abcde", 1, 2, "abcdefghij", 1, 1);
	test("abcde", 1, 2, "abcdefghij", 5, 1);
	test("abcde", 1, 2, "abcdefghij", 9, 1);
	test("abcde", 1, 2, "abcdefghij", 10, 1);
	test("abcde", 1, 2, "abcdefghijklmnopqrst", 0, 2);
	test("abcde", 1, 2, "abcdefghijklmnopqrst", 1, 1);
	test("abcde", 1, 2, "abcdefghijklmnopqrst", 10, 1);
	test("abcde", 1, 2, "abcdefghijklmnopqrst", 19, 1);
	test("abcde", 1, 2, "abcdefghijklmnopqrst", 20, 1);
	test("abcde", 1, 3, "", 0, 3);
	test("abcde", 1, 3, "abcde", 0, 3);
	test("abcde", 1, 3, "abcde", 1, 1);
	test("abcde", 1, 3, "abcde", 2, 1);
	test("abcde", 1, 3, "abcde", 4, 1);
	test("abcde", 1, 3, "abcde", 5, 1);
	test("abcde", 1, 3, "abcdefghij", 0, 3);
	test("abcde", 1, 3, "abcdefghij", 1, 1);
}

void
test2()
{
	test("abcde", 1, 3, "abcdefghij", 5, 1);
	test("abcde", 1, 3, "abcdefghij", 9, 1);
	test("abcde", 1, 3, "abcdefghij", 10, 1);
	test("abcde", 1, 3, "abcdefghijklmnopqrst", 0, 3);
	test("abcde", 1, 3, "abcdefghijklmnopqrst", 1, 1);
	test("abcde", 1, 3, "abcdefghijklmnopqrst", 10, 1);
	test("abcde", 1, 3, "abcdefghijklmnopqrst", 19, 1);
	test("abcde", 1, 3, "abcdefghijklmnopqrst", 20, 1);
	test("abcde", 1, 4, "", 0, 4);
	test("abcde", 1, 4, "abcde", 0, 4);
	test("abcde", 1, 4, "abcde", 1, 1);
	test("abcde", 1, 4, "abcde", 2, 1);
	test("abcde", 1, 4, "abcde", 4, 1);
	test("abcde", 1, 4, "abcde", 5, 1);
	test("abcde", 1, 4, "abcdefghij", 0, 4);
	test("abcde", 1, 4, "abcdefghij", 1, 1);
	test("abcde", 1, 4, "abcdefghij", 5, 1);
	test("abcde", 1, 4, "abcdefghij", 9, 1);
	test("abcde", 1, 4, "abcdefghij", 10, 1);
	test("abcde", 1, 4, "abcdefghijklmnopqrst", 0, 4);
	test("abcde", 1, 4, "abcdefghijklmnopqrst", 1, 1);
	test("abcde", 1, 4, "abcdefghijklmnopqrst", 10, 1);
	test("abcde", 1, 4, "abcdefghijklmnopqrst", 19, 1);
	test("abcde", 1, 4, "abcdefghijklmnopqrst", 20, 1);
	test("abcde", 1, 5, "", 0, 4);
	test("abcde", 1, 5, "abcde", 0, 4);
	test("abcde", 1, 5, "abcde", 1, 1);
	test("abcde", 1, 5, "abcde", 2, 1);
	test("abcde", 1, 5, "abcde", 4, 1);
	test("abcde", 1, 5, "abcde", 5, 1);
	test("abcde", 1, 5, "abcdefghij", 0, 4);
	test("abcde", 1, 5, "abcdefghij", 1, 1);
	test("abcde", 1, 5, "abcdefghij", 5, 1);
	test("abcde", 1, 5, "abcdefghij", 9, 1);
	test("abcde", 1, 5, "abcdefghij", 10, 1);
	test("abcde", 1, 5, "abcdefghijklmnopqrst", 0, 4);
	test("abcde", 1, 5, "abcdefghijklmnopqrst", 1, 1);
	test("abcde", 1, 5, "abcdefghijklmnopqrst", 10, 1);
	test("abcde", 1, 5, "abcdefghijklmnopqrst", 19, 1);
	test("abcde", 1, 5, "abcdefghijklmnopqrst", 20, 1);
	test("abcde", 2, 0, "", 0, 0);
	test("abcde", 2, 0, "abcde", 0, 0);
	test("abcde", 2, 0, "abcde", 1, -1);
	test("abcde", 2, 0, "abcde", 2, -2);
	test("abcde", 2, 0, "abcde", 4, -4);
	test("abcde", 2, 0, "abcde", 5, -5);
	test("abcde", 2, 0, "abcdefghij", 0, 0);
	test("abcde", 2, 0, "abcdefghij", 1, -1);
	test("abcde", 2, 0, "abcdefghij", 5, -5);
	test("abcde", 2, 0, "abcdefghij", 9, -9);
	test("abcde", 2, 0, "abcdefghij", 10, -10);
	test("abcde", 2, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcde", 2, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcde", 2, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcde", 2, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcde", 2, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcde", 2, 1, "", 0, 1);
	test("abcde", 2, 1, "abcde", 0, 1);
	test("abcde", 2, 1, "abcde", 1, 2);
	test("abcde", 2, 1, "abcde", 2, 2);
	test("abcde", 2, 1, "abcde", 4, 2);
	test("abcde", 2, 1, "abcde", 5, 2);
	test("abcde", 2, 1, "abcdefghij", 0, 1);
	test("abcde", 2, 1, "abcdefghij", 1, 2);
	test("abcde", 2, 1, "abcdefghij", 5, 2);
	test("abcde", 2, 1, "abcdefghij", 9, 2);
	test("abcde", 2, 1, "abcdefghij", 10, 2);
	test("abcde", 2, 1, "abcdefghijklmnopqrst", 0, 1);
	test("abcde", 2, 1, "abcdefghijklmnopqrst", 1, 2);
	test("abcde", 2, 1, "abcdefghijklmnopqrst", 10, 2);
	test("abcde", 2, 1, "abcdefghijklmnopqrst", 19, 2);
	test("abcde", 2, 1, "abcdefghijklmnopqrst", 20, 2);
	test("abcde", 2, 2, "", 0, 2);
	test("abcde", 2, 2, "abcde", 0, 2);
	test("abcde", 2, 2, "abcde", 1, 2);
	test("abcde", 2, 2, "abcde", 2, 2);
	test("abcde", 2, 2, "abcde", 4, 2);
	test("abcde", 2, 2, "abcde", 5, 2);
	test("abcde", 2, 2, "abcdefghij", 0, 2);
	test("abcde", 2, 2, "abcdefghij", 1, 2);
	test("abcde", 2, 2, "abcdefghij", 5, 2);
	test("abcde", 2, 2, "abcdefghij", 9, 2);
	test("abcde", 2, 2, "abcdefghij", 10, 2);
	test("abcde", 2, 2, "abcdefghijklmnopqrst", 0, 2);
	test("abcde", 2, 2, "abcdefghijklmnopqrst", 1, 2);
	test("abcde", 2, 2, "abcdefghijklmnopqrst", 10, 2);
	test("abcde", 2, 2, "abcdefghijklmnopqrst", 19, 2);
	test("abcde", 2, 2, "abcdefghijklmnopqrst", 20, 2);
	test("abcde", 2, 3, "", 0, 3);
	test("abcde", 2, 3, "abcde", 0, 3);
	test("abcde", 2, 3, "abcde", 1, 2);
	test("abcde", 2, 3, "abcde", 2, 2);
	test("abcde", 2, 3, "abcde", 4, 2);
	test("abcde", 2, 3, "abcde", 5, 2);
	test("abcde", 2, 3, "abcdefghij", 0, 3);
	test("abcde", 2, 3, "abcdefghij", 1, 2);
	test("abcde", 2, 3, "abcdefghij", 5, 2);
	test("abcde", 2, 3, "abcdefghij", 9, 2);
	test("abcde", 2, 3, "abcdefghij", 10, 2);
	test("abcde", 2, 3, "abcdefghijklmnopqrst", 0, 3);
}

void
test3()
{
	test("abcde", 2, 3, "abcdefghijklmnopqrst", 1, 2);
	test("abcde", 2, 3, "abcdefghijklmnopqrst", 10, 2);
	test("abcde", 2, 3, "abcdefghijklmnopqrst", 19, 2);
	test("abcde", 2, 3, "abcdefghijklmnopqrst", 20, 2);
	test("abcde", 2, 4, "", 0, 3);
	test("abcde", 2, 4, "abcde", 0, 3);
	test("abcde", 2, 4, "abcde", 1, 2);
	test("abcde", 2, 4, "abcde", 2, 2);
	test("abcde", 2, 4, "abcde", 4, 2);
	test("abcde", 2, 4, "abcde", 5, 2);
	test("abcde", 2, 4, "abcdefghij", 0, 3);
	test("abcde", 2, 4, "abcdefghij", 1, 2);
	test("abcde", 2, 4, "abcdefghij", 5, 2);
	test("abcde", 2, 4, "abcdefghij", 9, 2);
	test("abcde", 2, 4, "abcdefghij", 10, 2);
	test("abcde", 2, 4, "abcdefghijklmnopqrst", 0, 3);
	test("abcde", 2, 4, "abcdefghijklmnopqrst", 1, 2);
	test("abcde", 2, 4, "abcdefghijklmnopqrst", 10, 2);
	test("abcde", 2, 4, "abcdefghijklmnopqrst", 19, 2);
	test("abcde", 2, 4, "abcdefghijklmnopqrst", 20, 2);
	test("abcde", 4, 0, "", 0, 0);
	test("abcde", 4, 0, "abcde", 0, 0);
	test("abcde", 4, 0, "abcde", 1, -1);
	test("abcde", 4, 0, "abcde", 2, -2);
	test("abcde", 4, 0, "abcde", 4, -4);
	test("abcde", 4, 0, "abcde", 5, -5);
	test("abcde", 4, 0, "abcdefghij", 0, 0);
	test("abcde", 4, 0, "abcdefghij", 1, -1);
	test("abcde", 4, 0, "abcdefghij", 5, -5);
	test("abcde", 4, 0, "abcdefghij", 9, -9);
	test("abcde", 4, 0, "abcdefghij", 10, -10);
	test("abcde", 4, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcde", 4, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcde", 4, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcde", 4, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcde", 4, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcde", 4, 1, "", 0, 1);
	test("abcde", 4, 1, "abcde", 0, 1);
	test("abcde", 4, 1, "abcde", 1, 4);
	test("abcde", 4, 1, "abcde", 2, 4);
	test("abcde", 4, 1, "abcde", 4, 4);
	test("abcde", 4, 1, "abcde", 5, 4);
	test("abcde", 4, 1, "abcdefghij", 0, 1);
	test("abcde", 4, 1, "abcdefghij", 1, 4);
	test("abcde", 4, 1, "abcdefghij", 5, 4);
	test("abcde", 4, 1, "abcdefghij", 9, 4);
	test("abcde", 4, 1, "abcdefghij", 10, 4);
	test("abcde", 4, 1, "abcdefghijklmnopqrst", 0, 1);
	test("abcde", 4, 1, "abcdefghijklmnopqrst", 1, 4);
	test("abcde", 4, 1, "abcdefghijklmnopqrst", 10, 4);
	test("abcde", 4, 1, "abcdefghijklmnopqrst", 19, 4);
	test("abcde", 4, 1, "abcdefghijklmnopqrst", 20, 4);
	test("abcde", 4, 2, "", 0, 1);
	test("abcde", 4, 2, "abcde", 0, 1);
	test("abcde", 4, 2, "abcde", 1, 4);
	test("abcde", 4, 2, "abcde", 2, 4);
	test("abcde", 4, 2, "abcde", 4, 4);
	test("abcde", 4, 2, "abcde", 5, 4);
	test("abcde", 4, 2, "abcdefghij", 0, 1);
	test("abcde", 4, 2, "abcdefghij", 1, 4);
	test("abcde", 4, 2, "abcdefghij", 5, 4);
	test("abcde", 4, 2, "abcdefghij", 9, 4);
	test("abcde", 4, 2, "abcdefghij", 10, 4);
	test("abcde", 4, 2, "abcdefghijklmnopqrst", 0, 1);
	test("abcde", 4, 2, "abcdefghijklmnopqrst", 1, 4);
	test("abcde", 4, 2, "abcdefghijklmnopqrst", 10, 4);
	test("abcde", 4, 2, "abcdefghijklmnopqrst", 19, 4);
	test("abcde", 4, 2, "abcdefghijklmnopqrst", 20, 4);
	test("abcde", 5, 0, "", 0, 0);
	test("abcde", 5, 0, "abcde", 0, 0);
	test("abcde", 5, 0, "abcde", 1, -1);
	test("abcde", 5, 0, "abcde", 2, -2);
	test("abcde", 5, 0, "abcde", 4, -4);
	test("abcde", 5, 0, "abcde", 5, -5);
	test("abcde", 5, 0, "abcdefghij", 0, 0);
	test("abcde", 5, 0, "abcdefghij", 1, -1);
	test("abcde", 5, 0, "abcdefghij", 5, -5);
	test("abcde", 5, 0, "abcdefghij", 9, -9);
	test("abcde", 5, 0, "abcdefghij", 10, -10);
	test("abcde", 5, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcde", 5, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcde", 5, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcde", 5, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcde", 5, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcde", 5, 1, "", 0, 0);
	test("abcde", 5, 1, "abcde", 0, 0);
	test("abcde", 5, 1, "abcde", 1, -1);
	test("abcde", 5, 1, "abcde", 2, -2);
	test("abcde", 5, 1, "abcde", 4, -4);
	test("abcde", 5, 1, "abcde", 5, -5);
	test("abcde", 5, 1, "abcdefghij", 0, 0);
	test("abcde", 5, 1, "abcdefghij", 1, -1);
	test("abcde", 5, 1, "abcdefghij", 5, -5);
	test("abcde", 5, 1, "abcdefghij", 9, -9);
	test("abcde", 5, 1, "abcdefghij", 10, -10);
	test("abcde", 5, 1, "abcdefghijklmnopqrst", 0, 0);
	test("abcde", 5, 1, "abcdefghijklmnopqrst", 1, -1);
	test("abcde", 5, 1, "abcdefghijklmnopqrst", 10, -10);
	test("abcde", 5, 1, "abcdefghijklmnopqrst", 19, -19);
	test("abcde", 5, 1, "abcdefghijklmnopqrst", 20, -20);
}

void
test4()
{
	test("abcde", 6, 0, "", 0, 0);
	test("abcde", 6, 0, "abcde", 0, 0);
	test("abcde", 6, 0, "abcde", 1, 0);
	test("abcde", 6, 0, "abcde", 2, 0);
	test("abcde", 6, 0, "abcde", 4, 0);
	test("abcde", 6, 0, "abcde", 5, 0);
	test("abcde", 6, 0, "abcdefghij", 0, 0);
	test("abcde", 6, 0, "abcdefghij", 1, 0);
	test("abcde", 6, 0, "abcdefghij", 5, 0);
	test("abcde", 6, 0, "abcdefghij", 9, 0);
	test("abcde", 6, 0, "abcdefghij", 10, 0);
	test("abcde", 6, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcde", 6, 0, "abcdefghijklmnopqrst", 1, 0);
	test("abcde", 6, 0, "abcdefghijklmnopqrst", 10, 0);
	test("abcde", 6, 0, "abcdefghijklmnopqrst", 19, 0);
	test("abcde", 6, 0, "abcdefghijklmnopqrst", 20, 0);
	test("abcdefghij", 0, 0, "", 0, 0);
	test("abcdefghij", 0, 0, "abcde", 0, 0);
	test("abcdefghij", 0, 0, "abcde", 1, -1);
	test("abcdefghij", 0, 0, "abcde", 2, -2);
	test("abcdefghij", 0, 0, "abcde", 4, -4);
	test("abcdefghij", 0, 0, "abcde", 5, -5);
	test("abcdefghij", 0, 0, "abcdefghij", 0, 0);
	test("abcdefghij", 0, 0, "abcdefghij", 1, -1);
	test("abcdefghij", 0, 0, "abcdefghij", 5, -5);
	test("abcdefghij", 0, 0, "abcdefghij", 9, -9);
	test("abcdefghij", 0, 0, "abcdefghij", 10, -10);
	test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcdefghij", 0, 1, "", 0, 1);
	test("abcdefghij", 0, 1, "abcde", 0, 1);
	test("abcdefghij", 0, 1, "abcde", 1, 0);
	test("abcdefghij", 0, 1, "abcde", 2, -1);
	test("abcdefghij", 0, 1, "abcde", 4, -3);
	test("abcdefghij", 0, 1, "abcde", 5, -4);
	test("abcdefghij", 0, 1, "abcdefghij", 0, 1);
	test("abcdefghij", 0, 1, "abcdefghij", 1, 0);
	test("abcdefghij", 0, 1, "abcdefghij", 5, -4);
	test("abcdefghij", 0, 1, "abcdefghij", 9, -8);
	test("abcdefghij", 0, 1, "abcdefghij", 10, -9);
	test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 0, 1);
	test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 1, 0);
	test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 10, -9);
	test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 19, -18);
	test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 20, -19);
	test("abcdefghij", 0, 5, "", 0, 5);
	test("abcdefghij", 0, 5, "abcde", 0, 5);
	test("abcdefghij", 0, 5, "abcde", 1, 4);
	test("abcdefghij", 0, 5, "abcde", 2, 3);
	test("abcdefghij", 0, 5, "abcde", 4, 1);
	test("abcdefghij", 0, 5, "abcde", 5, 0);
	test("abcdefghij", 0, 5, "abcdefghij", 0, 5);
	test("abcdefghij", 0, 5, "abcdefghij", 1, 4);
	test("abcdefghij", 0, 5, "abcdefghij", 5, 0);
	test("abcdefghij", 0, 5, "abcdefghij", 9, -4);
	test("abcdefghij", 0, 5, "abcdefghij", 10, -5);
	test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 0, 5);
	test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 1, 4);
	test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 10, -5);
	test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 19, -14);
	test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 20, -15);
	test("abcdefghij", 0, 9, "", 0, 9);
	test("abcdefghij", 0, 9, "abcde", 0, 9);
	test("abcdefghij", 0, 9, "abcde", 1, 8);
	test("abcdefghij", 0, 9, "abcde", 2, 7);
	test("abcdefghij", 0, 9, "abcde", 4, 5);
	test("abcdefghij", 0, 9, "abcde", 5, 4);
	test("abcdefghij", 0, 9, "abcdefghij", 0, 9);
	test("abcdefghij", 0, 9, "abcdefghij", 1, 8);
	test("abcdefghij", 0, 9, "abcdefghij", 5, 4);
	test("abcdefghij", 0, 9, "abcdefghij", 9, 0);
	test("abcdefghij", 0, 9, "abcdefghij", 10, -1);
	test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 0, 9);
	test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 1, 8);
	test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 10, -1);
	test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 19, -10);
	test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 20, -11);
	test("abcdefghij", 0, 10, "", 0, 10);
	test("abcdefghij", 0, 10, "abcde", 0, 10);
	test("abcdefghij", 0, 10, "abcde", 1, 9);
	test("abcdefghij", 0, 10, "abcde", 2, 8);
	test("abcdefghij", 0, 10, "abcde", 4, 6);
	test("abcdefghij", 0, 10, "abcde", 5, 5);
	test("abcdefghij", 0, 10, "abcdefghij", 0, 10);
	test("abcdefghij", 0, 10, "abcdefghij", 1, 9);
	test("abcdefghij", 0, 10, "abcdefghij", 5, 5);
	test("abcdefghij", 0, 10, "abcdefghij", 9, 1);
	test("abcdefghij", 0, 10, "abcdefghij", 10, 0);
	test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 0, 10);
	test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 1, 9);
	test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 10, 0);
	test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 19, -9);
	test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 20, -10);
	test("abcdefghij", 0, 11, "", 0, 10);
	test("abcdefghij", 0, 11, "abcde", 0, 10);
	test("abcdefghij", 0, 11, "abcde", 1, 9);
	test("abcdefghij", 0, 11, "abcde", 2, 8);
}

void
test5()
{
	test("abcdefghij", 0, 11, "abcde", 4, 6);
	test("abcdefghij", 0, 11, "abcde", 5, 5);
	test("abcdefghij", 0, 11, "abcdefghij", 0, 10);
	test("abcdefghij", 0, 11, "abcdefghij", 1, 9);
	test("abcdefghij", 0, 11, "abcdefghij", 5, 5);
	test("abcdefghij", 0, 11, "abcdefghij", 9, 1);
	test("abcdefghij", 0, 11, "abcdefghij", 10, 0);
	test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 0, 10);
	test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 1, 9);
	test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 10, 0);
	test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 19, -9);
	test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 20, -10);
	test("abcdefghij", 1, 0, "", 0, 0);
	test("abcdefghij", 1, 0, "abcde", 0, 0);
	test("abcdefghij", 1, 0, "abcde", 1, -1);
	test("abcdefghij", 1, 0, "abcde", 2, -2);
	test("abcdefghij", 1, 0, "abcde", 4, -4);
	test("abcdefghij", 1, 0, "abcde", 5, -5);
	test("abcdefghij", 1, 0, "abcdefghij", 0, 0);
	test("abcdefghij", 1, 0, "abcdefghij", 1, -1);
	test("abcdefghij", 1, 0, "abcdefghij", 5, -5);
	test("abcdefghij", 1, 0, "abcdefghij", 9, -9);
	test("abcdefghij", 1, 0, "abcdefghij", 10, -10);
	test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcdefghij", 1, 1, "", 0, 1);
	test("abcdefghij", 1, 1, "abcde", 0, 1);
	test("abcdefghij", 1, 1, "abcde", 1, 1);
	test("abcdefghij", 1, 1, "abcde", 2, 1);
	test("abcdefghij", 1, 1, "abcde", 4, 1);
	test("abcdefghij", 1, 1, "abcde", 5, 1);
	test("abcdefghij", 1, 1, "abcdefghij", 0, 1);
	test("abcdefghij", 1, 1, "abcdefghij", 1, 1);
	test("abcdefghij", 1, 1, "abcdefghij", 5, 1);
	test("abcdefghij", 1, 1, "abcdefghij", 9, 1);
	test("abcdefghij", 1, 1, "abcdefghij", 10, 1);
	test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 0, 1);
	test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 1, 1);
	test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 10, 1);
	test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 19, 1);
	test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 20, 1);
	test("abcdefghij", 1, 4, "", 0, 4);
	test("abcdefghij", 1, 4, "abcde", 0, 4);
	test("abcdefghij", 1, 4, "abcde", 1, 1);
	test("abcdefghij", 1, 4, "abcde", 2, 1);
	test("abcdefghij", 1, 4, "abcde", 4, 1);
	test("abcdefghij", 1, 4, "abcde", 5, 1);
	test("abcdefghij", 1, 4, "abcdefghij", 0, 4);
	test("abcdefghij", 1, 4, "abcdefghij", 1, 1);
	test("abcdefghij", 1, 4, "abcdefghij", 5, 1);
	test("abcdefghij", 1, 4, "abcdefghij", 9, 1);
	test("abcdefghij", 1, 4, "abcdefghij", 10, 1);
	test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 0, 4);
	test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 1, 1);
	test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 10, 1);
	test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 19, 1);
	test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 20, 1);
	test("abcdefghij", 1, 8, "", 0, 8);
	test("abcdefghij", 1, 8, "abcde", 0, 8);
	test("abcdefghij", 1, 8, "abcde", 1, 1);
	test("abcdefghij", 1, 8, "abcde", 2, 1);
	test("abcdefghij", 1, 8, "abcde", 4, 1);
	test("abcdefghij", 1, 8, "abcde", 5, 1);
	test("abcdefghij", 1, 8, "abcdefghij", 0, 8);
	test("abcdefghij", 1, 8, "abcdefghij", 1, 1);
	test("abcdefghij", 1, 8, "abcdefghij", 5, 1);
	test("abcdefghij", 1, 8, "abcdefghij", 9, 1);
	test("abcdefghij", 1, 8, "abcdefghij", 10, 1);
	test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 0, 8);
	test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 1, 1);
	test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 10, 1);
	test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 19, 1);
	test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 20, 1);
	test("abcdefghij", 1, 9, "", 0, 9);
	test("abcdefghij", 1, 9, "abcde", 0, 9);
	test("abcdefghij", 1, 9, "abcde", 1, 1);
	test("abcdefghij", 1, 9, "abcde", 2, 1);
	test("abcdefghij", 1, 9, "abcde", 4, 1);
	test("abcdefghij", 1, 9, "abcde", 5, 1);
	test("abcdefghij", 1, 9, "abcdefghij", 0, 9);
	test("abcdefghij", 1, 9, "abcdefghij", 1, 1);
	test("abcdefghij", 1, 9, "abcdefghij", 5, 1);
	test("abcdefghij", 1, 9, "abcdefghij", 9, 1);
	test("abcdefghij", 1, 9, "abcdefghij", 10, 1);
	test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 0, 9);
	test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 1, 1);
	test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 10, 1);
	test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 19, 1);
	test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 20, 1);
	test("abcdefghij", 1, 10, "", 0, 9);
	test("abcdefghij", 1, 10, "abcde", 0, 9);
	test("abcdefghij", 1, 10, "abcde", 1, 1);
	test("abcdefghij", 1, 10, "abcde", 2, 1);
	test("abcdefghij", 1, 10, "abcde", 4, 1);
	test("abcdefghij", 1, 10, "abcde", 5, 1);
	test("abcdefghij", 1, 10, "abcdefghij", 0, 9);
	test("abcdefghij", 1, 10, "abcdefghij", 1, 1);
}

void
test6()
{
	test("abcdefghij", 1, 10, "abcdefghij", 5, 1);
	test("abcdefghij", 1, 10, "abcdefghij", 9, 1);
	test("abcdefghij", 1, 10, "abcdefghij", 10, 1);
	test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 0, 9);
	test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 1, 1);
	test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 10, 1);
	test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 19, 1);
	test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 20, 1);
	test("abcdefghij", 5, 0, "", 0, 0);
	test("abcdefghij", 5, 0, "abcde", 0, 0);
	test("abcdefghij", 5, 0, "abcde", 1, -1);
	test("abcdefghij", 5, 0, "abcde", 2, -2);
	test("abcdefghij", 5, 0, "abcde", 4, -4);
	test("abcdefghij", 5, 0, "abcde", 5, -5);
	test("abcdefghij", 5, 0, "abcdefghij", 0, 0);
	test("abcdefghij", 5, 0, "abcdefghij", 1, -1);
	test("abcdefghij", 5, 0, "abcdefghij", 5, -5);
	test("abcdefghij", 5, 0, "abcdefghij", 9, -9);
	test("abcdefghij", 5, 0, "abcdefghij", 10, -10);
	test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcdefghij", 5, 1, "", 0, 1);
	test("abcdefghij", 5, 1, "abcde", 0, 1);
	test("abcdefghij", 5, 1, "abcde", 1, 5);
	test("abcdefghij", 5, 1, "abcde", 2, 5);
	test("abcdefghij", 5, 1, "abcde", 4, 5);
	test("abcdefghij", 5, 1, "abcde", 5, 5);
	test("abcdefghij", 5, 1, "abcdefghij", 0, 1);
	test("abcdefghij", 5, 1, "abcdefghij", 1, 5);
	test("abcdefghij", 5, 1, "abcdefghij", 5, 5);
	test("abcdefghij", 5, 1, "abcdefghij", 9, 5);
	test("abcdefghij", 5, 1, "abcdefghij", 10, 5);
	test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 0, 1);
	test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 1, 5);
	test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 10, 5);
	test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 19, 5);
	test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 20, 5);
	test("abcdefghij", 5, 2, "", 0, 2);
	test("abcdefghij", 5, 2, "abcde", 0, 2);
	test("abcdefghij", 5, 2, "abcde", 1, 5);
	test("abcdefghij", 5, 2, "abcde", 2, 5);
	test("abcdefghij", 5, 2, "abcde", 4, 5);
	test("abcdefghij", 5, 2, "abcde", 5, 5);
	test("abcdefghij", 5, 2, "abcdefghij", 0, 2);
	test("abcdefghij", 5, 2, "abcdefghij", 1, 5);
	test("abcdefghij", 5, 2, "abcdefghij", 5, 5);
	test("abcdefghij", 5, 2, "abcdefghij", 9, 5);
	test("abcdefghij", 5, 2, "abcdefghij", 10, 5);
	test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 0, 2);
	test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 1, 5);
	test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 10, 5);
	test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 19, 5);
	test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 20, 5);
	test("abcdefghij", 5, 4, "", 0, 4);
	test("abcdefghij", 5, 4, "abcde", 0, 4);
	test("abcdefghij", 5, 4, "abcde", 1, 5);
	test("abcdefghij", 5, 4, "abcde", 2, 5);
	test("abcdefghij", 5, 4, "abcde", 4, 5);
	test("abcdefghij", 5, 4, "abcde", 5, 5);
	test("abcdefghij", 5, 4, "abcdefghij", 0, 4);
	test("abcdefghij", 5, 4, "abcdefghij", 1, 5);
	test("abcdefghij", 5, 4, "abcdefghij", 5, 5);
	test("abcdefghij", 5, 4, "abcdefghij", 9, 5);
	test("abcdefghij", 5, 4, "abcdefghij", 10, 5);
	test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 0, 4);
	test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 1, 5);
	test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 10, 5);
	test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 19, 5);
	test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 20, 5);
	test("abcdefghij", 5, 5, "", 0, 5);
	test("abcdefghij", 5, 5, "abcde", 0, 5);
	test("abcdefghij", 5, 5, "abcde", 1, 5);
	test("abcdefghij", 5, 5, "abcde", 2, 5);
	test("abcdefghij", 5, 5, "abcde", 4, 5);
	test("abcdefghij", 5, 5, "abcde", 5, 5);
	test("abcdefghij", 5, 5, "abcdefghij", 0, 5);
	test("abcdefghij", 5, 5, "abcdefghij", 1, 5);
	test("abcdefghij", 5, 5, "abcdefghij", 5, 5);
	test("abcdefghij", 5, 5, "abcdefghij", 9, 5);
	test("abcdefghij", 5, 5, "abcdefghij", 10, 5);
	test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 0, 5);
	test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 1, 5);
	test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 10, 5);
	test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 19, 5);
	test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 20, 5);
	test("abcdefghij", 5, 6, "", 0, 5);
	test("abcdefghij", 5, 6, "abcde", 0, 5);
	test("abcdefghij", 5, 6, "abcde", 1, 5);
	test("abcdefghij", 5, 6, "abcde", 2, 5);
	test("abcdefghij", 5, 6, "abcde", 4, 5);
	test("abcdefghij", 5, 6, "abcde", 5, 5);
	test("abcdefghij", 5, 6, "abcdefghij", 0, 5);
	test("abcdefghij", 5, 6, "abcdefghij", 1, 5);
	test("abcdefghij", 5, 6, "abcdefghij", 5, 5);
	test("abcdefghij", 5, 6, "abcdefghij", 9, 5);
	test("abcdefghij", 5, 6, "abcdefghij", 10, 5);
	test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 0, 5);
}

void
test7()
{
	test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 1, 5);
	test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 10, 5);
	test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 19, 5);
	test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 20, 5);
	test("abcdefghij", 9, 0, "", 0, 0);
	test("abcdefghij", 9, 0, "abcde", 0, 0);
	test("abcdefghij", 9, 0, "abcde", 1, -1);
	test("abcdefghij", 9, 0, "abcde", 2, -2);
	test("abcdefghij", 9, 0, "abcde", 4, -4);
	test("abcdefghij", 9, 0, "abcde", 5, -5);
	test("abcdefghij", 9, 0, "abcdefghij", 0, 0);
	test("abcdefghij", 9, 0, "abcdefghij", 1, -1);
	test("abcdefghij", 9, 0, "abcdefghij", 5, -5);
	test("abcdefghij", 9, 0, "abcdefghij", 9, -9);
	test("abcdefghij", 9, 0, "abcdefghij", 10, -10);
	test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcdefghij", 9, 1, "", 0, 1);
	test("abcdefghij", 9, 1, "abcde", 0, 1);
	test("abcdefghij", 9, 1, "abcde", 1, 9);
	test("abcdefghij", 9, 1, "abcde", 2, 9);
	test("abcdefghij", 9, 1, "abcde", 4, 9);
	test("abcdefghij", 9, 1, "abcde", 5, 9);
	test("abcdefghij", 9, 1, "abcdefghij", 0, 1);
	test("abcdefghij", 9, 1, "abcdefghij", 1, 9);
	test("abcdefghij", 9, 1, "abcdefghij", 5, 9);
	test("abcdefghij", 9, 1, "abcdefghij", 9, 9);
	test("abcdefghij", 9, 1, "abcdefghij", 10, 9);
	test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 0, 1);
	test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 1, 9);
	test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 10, 9);
	test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 19, 9);
	test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 20, 9);
	test("abcdefghij", 9, 2, "", 0, 1);
	test("abcdefghij", 9, 2, "abcde", 0, 1);
	test("abcdefghij", 9, 2, "abcde", 1, 9);
	test("abcdefghij", 9, 2, "abcde", 2, 9);
	test("abcdefghij", 9, 2, "abcde", 4, 9);
	test("abcdefghij", 9, 2, "abcde", 5, 9);
	test("abcdefghij", 9, 2, "abcdefghij", 0, 1);
	test("abcdefghij", 9, 2, "abcdefghij", 1, 9);
	test("abcdefghij", 9, 2, "abcdefghij", 5, 9);
	test("abcdefghij", 9, 2, "abcdefghij", 9, 9);
	test("abcdefghij", 9, 2, "abcdefghij", 10, 9);
	test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 0, 1);
	test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 1, 9);
	test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 10, 9);
	test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 19, 9);
	test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 20, 9);
	test("abcdefghij", 10, 0, "", 0, 0);
	test("abcdefghij", 10, 0, "abcde", 0, 0);
	test("abcdefghij", 10, 0, "abcde", 1, -1);
	test("abcdefghij", 10, 0, "abcde", 2, -2);
	test("abcdefghij", 10, 0, "abcde", 4, -4);
	test("abcdefghij", 10, 0, "abcde", 5, -5);
	test("abcdefghij", 10, 0, "abcdefghij", 0, 0);
	test("abcdefghij", 10, 0, "abcdefghij", 1, -1);
	test("abcdefghij", 10, 0, "abcdefghij", 5, -5);
	test("abcdefghij", 10, 0, "abcdefghij", 9, -9);
	test("abcdefghij", 10, 0, "abcdefghij", 10, -10);
	test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcdefghij", 10, 1, "", 0, 0);
	test("abcdefghij", 10, 1, "abcde", 0, 0);
	test("abcdefghij", 10, 1, "abcde", 1, -1);
	test("abcdefghij", 10, 1, "abcde", 2, -2);
	test("abcdefghij", 10, 1, "abcde", 4, -4);
	test("abcdefghij", 10, 1, "abcde", 5, -5);
	test("abcdefghij", 10, 1, "abcdefghij", 0, 0);
	test("abcdefghij", 10, 1, "abcdefghij", 1, -1);
	test("abcdefghij", 10, 1, "abcdefghij", 5, -5);
	test("abcdefghij", 10, 1, "abcdefghij", 9, -9);
	test("abcdefghij", 10, 1, "abcdefghij", 10, -10);
	test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 0, 0);
	test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 1, -1);
	test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 10, -10);
	test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 19, -19);
	test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 20, -20);
	test("abcdefghij", 11, 0, "", 0, 0);
	test("abcdefghij", 11, 0, "abcde", 0, 0);
	test("abcdefghij", 11, 0, "abcde", 1, 0);
	test("abcdefghij", 11, 0, "abcde", 2, 0);
	test("abcdefghij", 11, 0, "abcde", 4, 0);
	test("abcdefghij", 11, 0, "abcde", 5, 0);
	test("abcdefghij", 11, 0, "abcdefghij", 0, 0);
	test("abcdefghij", 11, 0, "abcdefghij", 1, 0);
	test("abcdefghij", 11, 0, "abcdefghij", 5, 0);
	test("abcdefghij", 11, 0, "abcdefghij", 9, 0);
	test("abcdefghij", 11, 0, "abcdefghij", 10, 0);
	test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 1, 0);
	test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 10, 0);
	test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 19, 0);
	test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 20, 0);
}

void
test8()
{
	test("abcdefghijklmnopqrst", 0, 0, "", 0, 0);
	test("abcdefghijklmnopqrst", 0, 0, "abcde", 0, 0);
	test("abcdefghijklmnopqrst", 0, 0, "abcde", 1, -1);
	test("abcdefghijklmnopqrst", 0, 0, "abcde", 2, -2);
	test("abcdefghijklmnopqrst", 0, 0, "abcde", 4, -4);
	test("abcdefghijklmnopqrst", 0, 0, "abcde", 5, -5);
	test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 0, 0);
	test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 1, -1);
	test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 5, -5);
	test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 9, -9);
	test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 10, -10);
	test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcdefghijklmnopqrst", 0, 1, "", 0, 1);
	test("abcdefghijklmnopqrst", 0, 1, "abcde", 0, 1);
	test("abcdefghijklmnopqrst", 0, 1, "abcde", 1, 0);
	test("abcdefghijklmnopqrst", 0, 1, "abcde", 2, -1);
	test("abcdefghijklmnopqrst", 0, 1, "abcde", 4, -3);
	test("abcdefghijklmnopqrst", 0, 1, "abcde", 5, -4);
	test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 0, 1);
	test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 1, 0);
	test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 5, -4);
	test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 9, -8);
	test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 10, -9);
	test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 0, 1);
	test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 1, 0);
	test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 10, -9);
	test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 19, -18);
	test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 20, -19);
	test("abcdefghijklmnopqrst", 0, 10, "", 0, 10);
	test("abcdefghijklmnopqrst", 0, 10, "abcde", 0, 10);
	test("abcdefghijklmnopqrst", 0, 10, "abcde", 1, 9);
	test("abcdefghijklmnopqrst", 0, 10, "abcde", 2, 8);
	test("abcdefghijklmnopqrst", 0, 10, "abcde", 4, 6);
	test("abcdefghijklmnopqrst", 0, 10, "abcde", 5, 5);
	test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 0, 10);
	test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 1, 9);
	test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 5, 5);
	test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 9, 1);
	test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 10, 0);
	test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 0, 10);
	test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 1, 9);
	test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 10, 0);
	test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 19, -9);
	test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 20, -10);
	test("abcdefghijklmnopqrst", 0, 19, "", 0, 19);
	test("abcdefghijklmnopqrst", 0, 19, "abcde", 0, 19);
	test("abcdefghijklmnopqrst", 0, 19, "abcde", 1, 18);
	test("abcdefghijklmnopqrst", 0, 19, "abcde", 2, 17);
	test("abcdefghijklmnopqrst", 0, 19, "abcde", 4, 15);
	test("abcdefghijklmnopqrst", 0, 19, "abcde", 5, 14);
	test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 0, 19);
	test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 1, 18);
	test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 5, 14);
	test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 9, 10);
	test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 10, 9);
	test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 0, 19);
	test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 1, 18);
	test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 10, 9);
	test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 19, 0);
	test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 20, -1);
	test("abcdefghijklmnopqrst", 0, 20, "", 0, 20);
	test("abcdefghijklmnopqrst", 0, 20, "abcde", 0, 20);
	test("abcdefghijklmnopqrst", 0, 20, "abcde", 1, 19);
	test("abcdefghijklmnopqrst", 0, 20, "abcde", 2, 18);
	test("abcdefghijklmnopqrst", 0, 20, "abcde", 4, 16);
	test("abcdefghijklmnopqrst", 0, 20, "abcde", 5, 15);
	test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 0, 20);
	test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 1, 19);
	test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 5, 15);
	test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 9, 11);
	test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 10, 10);
	test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 0, 20);
	test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 1, 19);
	test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 10, 10);
	test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 19, 1);
	test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 20, 0);
	test("abcdefghijklmnopqrst", 0, 21, "", 0, 20);
	test("abcdefghijklmnopqrst", 0, 21, "abcde", 0, 20);
	test("abcdefghijklmnopqrst", 0, 21, "abcde", 1, 19);
	test("abcdefghijklmnopqrst", 0, 21, "abcde", 2, 18);
	test("abcdefghijklmnopqrst", 0, 21, "abcde", 4, 16);
	test("abcdefghijklmnopqrst", 0, 21, "abcde", 5, 15);
	test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 0, 20);
	test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 1, 19);
	test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 5, 15);
	test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 9, 11);
	test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 10, 10);
	test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 0, 20);
	test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 1, 19);
	test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 10, 10);
	test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 19, 1);
	test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 20, 0);
	test("abcdefghijklmnopqrst", 1, 0, "", 0, 0);
	test("abcdefghijklmnopqrst", 1, 0, "abcde", 0, 0);
	test("abcdefghijklmnopqrst", 1, 0, "abcde", 1, -1);
	test("abcdefghijklmnopqrst", 1, 0, "abcde", 2, -2);
}

void
test9()
{
	test("abcdefghijklmnopqrst", 1, 0, "abcde", 4, -4);
	test("abcdefghijklmnopqrst", 1, 0, "abcde", 5, -5);
	test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 0, 0);
	test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 1, -1);
	test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 5, -5);
	test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 9, -9);
	test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 10, -10);
	test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcdefghijklmnopqrst", 1, 1, "", 0, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcde", 0, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcde", 1, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcde", 2, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcde", 4, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcde", 5, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 0, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 1, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 5, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 9, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 10, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 0, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 1, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 10, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 19, 1);
	test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 20, 1);
	test("abcdefghijklmnopqrst", 1, 9, "", 0, 9);
	test("abcdefghijklmnopqrst", 1, 9, "abcde", 0, 9);
	test("abcdefghijklmnopqrst", 1, 9, "abcde", 1, 1);
	test("abcdefghijklmnopqrst", 1, 9, "abcde", 2, 1);
	test("abcdefghijklmnopqrst", 1, 9, "abcde", 4, 1);
	test("abcdefghijklmnopqrst", 1, 9, "abcde", 5, 1);
	test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 0, 9);
	test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 1, 1);
	test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 5, 1);
	test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 9, 1);
	test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 10, 1);
	test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 0, 9);
	test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 1, 1);
	test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 10, 1);
	test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 19, 1);
	test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 20, 1);
	test("abcdefghijklmnopqrst", 1, 18, "", 0, 18);
	test("abcdefghijklmnopqrst", 1, 18, "abcde", 0, 18);
	test("abcdefghijklmnopqrst", 1, 18, "abcde", 1, 1);
	test("abcdefghijklmnopqrst", 1, 18, "abcde", 2, 1);
	test("abcdefghijklmnopqrst", 1, 18, "abcde", 4, 1);
	test("abcdefghijklmnopqrst", 1, 18, "abcde", 5, 1);
	test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 0, 18);
	test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 1, 1);
	test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 5, 1);
	test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 9, 1);
	test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 10, 1);
	test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 0, 18);
	test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 1, 1);
	test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 10, 1);
	test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 19, 1);
	test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 20, 1);
	test("abcdefghijklmnopqrst", 1, 19, "", 0, 19);
	test("abcdefghijklmnopqrst", 1, 19, "abcde", 0, 19);
	test("abcdefghijklmnopqrst", 1, 19, "abcde", 1, 1);
	test("abcdefghijklmnopqrst", 1, 19, "abcde", 2, 1);
	test("abcdefghijklmnopqrst", 1, 19, "abcde", 4, 1);
	test("abcdefghijklmnopqrst", 1, 19, "abcde", 5, 1);
	test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 0, 19);
	test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 1, 1);
	test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 5, 1);
	test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 9, 1);
	test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 10, 1);
	test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 0, 19);
	test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 1, 1);
	test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 10, 1);
	test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 19, 1);
	test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 20, 1);
	test("abcdefghijklmnopqrst", 1, 20, "", 0, 19);
	test("abcdefghijklmnopqrst", 1, 20, "abcde", 0, 19);
	test("abcdefghijklmnopqrst", 1, 20, "abcde", 1, 1);
	test("abcdefghijklmnopqrst", 1, 20, "abcde", 2, 1);
	test("abcdefghijklmnopqrst", 1, 20, "abcde", 4, 1);
	test("abcdefghijklmnopqrst", 1, 20, "abcde", 5, 1);
	test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 0, 19);
	test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 1, 1);
	test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 5, 1);
	test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 9, 1);
	test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 10, 1);
	test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 0, 19);
	test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 1, 1);
	test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 10, 1);
	test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 19, 1);
	test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 20, 1);
	test("abcdefghijklmnopqrst", 10, 0, "", 0, 0);
	test("abcdefghijklmnopqrst", 10, 0, "abcde", 0, 0);
	test("abcdefghijklmnopqrst", 10, 0, "abcde", 1, -1);
	test("abcdefghijklmnopqrst", 10, 0, "abcde", 2, -2);
	test("abcdefghijklmnopqrst", 10, 0, "abcde", 4, -4);
	test("abcdefghijklmnopqrst", 10, 0, "abcde", 5, -5);
	test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 0, 0);
	test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 1, -1);
}

void
test10()
{
	test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 5, -5);
	test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 9, -9);
	test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 10, -10);
	test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcdefghijklmnopqrst", 10, 1, "", 0, 1);
	test("abcdefghijklmnopqrst", 10, 1, "abcde", 0, 1);
	test("abcdefghijklmnopqrst", 10, 1, "abcde", 1, 10);
	test("abcdefghijklmnopqrst", 10, 1, "abcde", 2, 10);
	test("abcdefghijklmnopqrst", 10, 1, "abcde", 4, 10);
	test("abcdefghijklmnopqrst", 10, 1, "abcde", 5, 10);
	test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 0, 1);
	test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 1, 10);
	test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 5, 10);
	test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 9, 10);
	test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 10, 10);
	test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 0, 1);
	test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 1, 10);
	test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 10, 10);
	test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 19, 10);
	test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 20, 10);
	test("abcdefghijklmnopqrst", 10, 5, "", 0, 5);
	test("abcdefghijklmnopqrst", 10, 5, "abcde", 0, 5);
	test("abcdefghijklmnopqrst", 10, 5, "abcde", 1, 10);
	test("abcdefghijklmnopqrst", 10, 5, "abcde", 2, 10);
	test("abcdefghijklmnopqrst", 10, 5, "abcde", 4, 10);
	test("abcdefghijklmnopqrst", 10, 5, "abcde", 5, 10);
	test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 0, 5);
	test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 1, 10);
	test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 5, 10);
	test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 9, 10);
	test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 10, 10);
	test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 0, 5);
	test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 1, 10);
	test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 10, 10);
	test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 19, 10);
	test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 20, 10);
	test("abcdefghijklmnopqrst", 10, 9, "", 0, 9);
	test("abcdefghijklmnopqrst", 10, 9, "abcde", 0, 9);
	test("abcdefghijklmnopqrst", 10, 9, "abcde", 1, 10);
	test("abcdefghijklmnopqrst", 10, 9, "abcde", 2, 10);
	test("abcdefghijklmnopqrst", 10, 9, "abcde", 4, 10);
	test("abcdefghijklmnopqrst", 10, 9, "abcde", 5, 10);
	test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 0, 9);
	test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 1, 10);
	test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 5, 10);
	test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 9, 10);
	test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 10, 10);
	test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 0, 9);
	test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 1, 10);
	test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 10, 10);
	test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 19, 10);
	test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 20, 10);
	test("abcdefghijklmnopqrst", 10, 10, "", 0, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcde", 0, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcde", 1, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcde", 2, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcde", 4, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcde", 5, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 0, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 1, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 5, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 9, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 10, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 0, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 1, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 10, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 19, 10);
	test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 20, 10);
	test("abcdefghijklmnopqrst", 10, 11, "", 0, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcde", 0, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcde", 1, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcde", 2, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcde", 4, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcde", 5, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 0, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 1, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 5, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 9, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 10, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 0, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 1, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 10, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 19, 10);
	test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 20, 10);
	test("abcdefghijklmnopqrst", 19, 0, "", 0, 0);
	test("abcdefghijklmnopqrst", 19, 0, "abcde", 0, 0);
	test("abcdefghijklmnopqrst", 19, 0, "abcde", 1, -1);
	test("abcdefghijklmnopqrst", 19, 0, "abcde", 2, -2);
	test("abcdefghijklmnopqrst", 19, 0, "abcde", 4, -4);
	test("abcdefghijklmnopqrst", 19, 0, "abcde", 5, -5);
	test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 0, 0);
	test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 1, -1);
	test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 5, -5);
	test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 9, -9);
	test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 10, -10);
	test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 0, 0);
}

void
test11()
{
	test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcdefghijklmnopqrst", 19, 1, "", 0, 1);
	test("abcdefghijklmnopqrst", 19, 1, "abcde", 0, 1);
	test("abcdefghijklmnopqrst", 19, 1, "abcde", 1, 19);
	test("abcdefghijklmnopqrst", 19, 1, "abcde", 2, 19);
	test("abcdefghijklmnopqrst", 19, 1, "abcde", 4, 19);
	test("abcdefghijklmnopqrst", 19, 1, "abcde", 5, 19);
	test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 0, 1);
	test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 1, 19);
	test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 5, 19);
	test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 9, 19);
	test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 10, 19);
	test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 0, 1);
	test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 1, 19);
	test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 10, 19);
	test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 19, 19);
	test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 20, 19);
	test("abcdefghijklmnopqrst", 19, 2, "", 0, 1);
	test("abcdefghijklmnopqrst", 19, 2, "abcde", 0, 1);
	test("abcdefghijklmnopqrst", 19, 2, "abcde", 1, 19);
	test("abcdefghijklmnopqrst", 19, 2, "abcde", 2, 19);
	test("abcdefghijklmnopqrst", 19, 2, "abcde", 4, 19);
	test("abcdefghijklmnopqrst", 19, 2, "abcde", 5, 19);
	test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 0, 1);
	test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 1, 19);
	test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 5, 19);
	test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 9, 19);
	test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 10, 19);
	test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 0, 1);
	test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 1, 19);
	test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 10, 19);
	test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 19, 19);
	test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 20, 19);
	test("abcdefghijklmnopqrst", 20, 0, "", 0, 0);
	test("abcdefghijklmnopqrst", 20, 0, "abcde", 0, 0);
	test("abcdefghijklmnopqrst", 20, 0, "abcde", 1, -1);
	test("abcdefghijklmnopqrst", 20, 0, "abcde", 2, -2);
	test("abcdefghijklmnopqrst", 20, 0, "abcde", 4, -4);
	test("abcdefghijklmnopqrst", 20, 0, "abcde", 5, -5);
	test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 0, 0);
	test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 1, -1);
	test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 5, -5);
	test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 9, -9);
	test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 10, -10);
	test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 1, -1);
	test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 10, -10);
	test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 19, -19);
	test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 20, -20);
	test("abcdefghijklmnopqrst", 20, 1, "", 0, 0);
	test("abcdefghijklmnopqrst", 20, 1, "abcde", 0, 0);
	test("abcdefghijklmnopqrst", 20, 1, "abcde", 1, -1);
	test("abcdefghijklmnopqrst", 20, 1, "abcde", 2, -2);
	test("abcdefghijklmnopqrst", 20, 1, "abcde", 4, -4);
	test("abcdefghijklmnopqrst", 20, 1, "abcde", 5, -5);
	test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 0, 0);
	test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 1, -1);
	test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 5, -5);
	test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 9, -9);
	test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 10, -10);
	test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 0, 0);
	test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 1, -1);
	test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 10, -10);
	test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 19, -19);
	test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 20, -20);
	test("abcdefghijklmnopqrst", 21, 0, "", 0, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcde", 0, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcde", 1, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcde", 2, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcde", 4, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcde", 5, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 0, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 1, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 5, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 9, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 10, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 0, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 1, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 10, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 19, 0);
	test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 20, 0);
}

static void
run()
{
	test0();
	test1();
	test2();
	test3();
	test4();
	test5();
	test6();
	test7();
	test8();
	test9();
	test10();
	test11();

	{
		test("", 0, 0, "abcde", 0, 0);
		test("", 0, 0, "abcde", 1, -1);
		test("abcdefghijklmnopqrst", 21, 0, "abcde", 0, 0);
		test("abcdefghijklmnopqrst", 21, 0, "abcde", 1, 0);
		test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 10, -10);
	}

	{
		test(L"", 0, 0, L"abcde", 0, 0);
		test(L"", 0, 0, L"abcde", 1, -1);
		test(L"abcdefghijklmnopqrst", 21, 0, L"abcde", 0, 0);
		test(L"abcdefghijklmnopqrst", 21, 0, L"abcde", 1, 0);
		test(L"abcdefghijklmnopqrst", 10, 0, L"abcdefghij", 10, -10);
	}

	{
		test(U"", 0, 0, U"abcde", 0, 0);
		test(U"", 0, 0, U"abcde", 1, -1);
		test(U"abcdefghijklmnopqrst", 21, 0, U"abcde", 0, 0);
		test(U"abcdefghijklmnopqrst", 21, 0, U"abcde", 1, 0);
		test(U"abcdefghijklmnopqrst", 10, 0, U"abcdefghij", 10, -10);
	}

	{
		test(U"", 0, 0, U"abcde", 0, 0);
		test(U"", 0, 0, U"abcde", 1, -1);
		test(U"abcdefghijklmnopqrst", 21, 0, U"abcde", 0, 0);
		test(U"abcdefghijklmnopqrst", 21, 0, U"abcde", 1, 0);
		test(U"abcdefghijklmnopqrst", 10, 0, U"abcdefghij", 10, -10);
	}
}

int
main(int argc, char *argv[])
{
	return run_test([&] { run(); });
}
