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1 | /* |
2 | (c) 2015 Glen Joseph Fernandes | |
3 | <glenjofe -at- gmail.com> | |
4 | ||
5 | Distributed under the Boost Software | |
6 | License, Version 1.0. | |
7 | http://boost.org/LICENSE_1_0.txt | |
8 | */ | |
9 | #include <boost/align/align_down.hpp> | |
10 | #include <boost/align/is_aligned.hpp> | |
11 | #include <boost/core/lightweight_test.hpp> | |
12 | ||
13 | template<std::size_t Alignment> | |
14 | void test() | |
15 | { | |
16 | char s[Alignment << 1]; | |
17 | char* b = s; | |
18 | while (!boost::alignment::is_aligned(b, Alignment)) { | |
19 | b++; | |
20 | } | |
21 | { | |
22 | void* p = &b[Alignment]; | |
23 | BOOST_TEST(boost::alignment::align_down(p, Alignment) == p); | |
24 | } | |
25 | { | |
26 | void* p = &b[Alignment - 1]; | |
27 | void* q = b; | |
28 | BOOST_TEST(boost::alignment::align_down(p, Alignment) == q); | |
29 | } | |
30 | } | |
31 | ||
32 | int main() | |
33 | { | |
34 | test<1>(); | |
35 | test<2>(); | |
36 | test<4>(); | |
37 | test<8>(); | |
38 | test<16>(); | |
39 | test<32>(); | |
40 | test<64>(); | |
41 | test<128>(); | |
42 | ||
43 | return boost::report_errors(); | |
44 | } |