1 // Boost.Geometry (aka GGL, Generic Geometry Library)
2 // Unit Test
3
4 // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
5 // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
6 // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
7
8 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
9 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
10
11 // Use, modification and distribution is subject to the Boost Software License,
12 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
13 // http://www.boost.org/LICENSE_1_0.txt)
14
15
16 #include <geometry_test_common.hpp>
17
18 #include <boost/geometry/util/select_most_precise.hpp>
19
20
21 struct user_defined {};
22
23 template <typename T1, typename T2, typename ExpectedType>
test()24 void test()
25 {
26 typedef typename bg::select_most_precise<T1, T2>::type type;
27 bool is_same = boost::is_same<type, ExpectedType>::type::value;
28
29 BOOST_CHECK_MESSAGE(is_same,
30 "The most precise of types " <<
31 "T1: {" << typeid(T1).name() << " | s: " << sizeof(T1) << "}" <<
32 " and " <<
33 "T2: {" << typeid(T2).name() << " | s: " << sizeof(T2) << "}" <<
34 " does not match " <<
35 "ExpectedType: {" << typeid(ExpectedType).name() << " | s: " << sizeof(ExpectedType) << "}");
36 }
37
test_main(int,char * [])38 int test_main(int, char* [])
39 {
40 // fp only
41 test<float, float, float>();
42 test<float, double, double>();
43 test<double, float, double>();
44 test<double, double, double>();
45
46 // integer only
47 test<int, int, int>();
48 test<int, short int, int>();
49 test<short int, int, int>();
50 test<short int, short int, short int>();
51
52 // int/fp
53 test<double, int, double>();
54 test<int, double, double>();
55 test<long double, long double, long double>();
56 test<float, int, float>();
57 test<int, float, float>();
58
59 if ( sizeof(long double) > sizeof(double) )
60 {
61 // This cannot be done for MSVC because double/long double is the same
62 // This is also true for Android
63 test<double, long double, long double>();
64 test<long double, double, long double>();
65 }
66
67 // with any other non-integer/float class
68 test<int, user_defined, user_defined>();
69 test<user_defined, int, user_defined>();
70 test<long double, user_defined, user_defined>();
71 test<user_defined, long double, user_defined>();
72 test<user_defined, user_defined, user_defined>();
73
74 // should not compile
75 //test<void, void, void>();
76
77 return 0;
78 }
79