69 lines
1.6 KiB
C++
69 lines
1.6 KiB
C++
/*
|
|
Copyright 2014-2015 Glen Joseph Fernandes
|
|
(glenjofe@gmail.com)
|
|
|
|
Distributed under the Boost Software License, Version 1.0.
|
|
(http://www.boost.org/LICENSE_1_0.txt)
|
|
*/
|
|
#include <boost/align/align.hpp>
|
|
#include <boost/align/is_aligned.hpp>
|
|
#include <boost/core/lightweight_test.hpp>
|
|
|
|
template<std::size_t Alignment>
|
|
void test()
|
|
{
|
|
char s[Alignment << 1];
|
|
char* b = s;
|
|
while (!boost::alignment::is_aligned(b, Alignment)) {
|
|
++b;
|
|
}
|
|
{
|
|
std::size_t n = Alignment;
|
|
void* p = b;
|
|
void* q = boost::alignment::align(Alignment, 1, p, n);
|
|
BOOST_TEST(q == p);
|
|
BOOST_TEST(q == b);
|
|
BOOST_TEST(boost::alignment::is_aligned(q, Alignment));
|
|
BOOST_TEST(n == Alignment);
|
|
}
|
|
{
|
|
std::size_t n = 0;
|
|
void* p = b;
|
|
void* q = boost::alignment::align(Alignment, 1, p, n);
|
|
BOOST_TEST(q == 0);
|
|
BOOST_TEST(p == b);
|
|
BOOST_TEST(n == 0);
|
|
}
|
|
{
|
|
std::size_t n = Alignment - 1;
|
|
void* p = &b[1];
|
|
void* q = boost::alignment::align(Alignment, 1, p, n);
|
|
BOOST_TEST(q == 0);
|
|
BOOST_TEST(p == &b[1]);
|
|
BOOST_TEST(n == Alignment - 1);
|
|
}
|
|
{
|
|
std::size_t n = Alignment;
|
|
void* p = &b[1];
|
|
void* q = boost::alignment::align(Alignment, 1, p, n);
|
|
BOOST_TEST(q == p);
|
|
BOOST_TEST(p == &b[Alignment]);
|
|
BOOST_TEST(boost::alignment::is_aligned(q, Alignment));
|
|
BOOST_TEST(n == 1);
|
|
}
|
|
}
|
|
|
|
int main()
|
|
{
|
|
test<1>();
|
|
test<2>();
|
|
test<4>();
|
|
test<8>();
|
|
test<16>();
|
|
test<32>();
|
|
test<64>();
|
|
test<128>();
|
|
|
|
return boost::report_errors();
|
|
}
|