ceph/src/boost/libs/qvm/test/normalize_q_test.cpp

   1 //Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc.
   2
   3 //Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 //file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #include <boost/qvm/quat_operations.hpp>
   7 #include <boost/qvm/quat.hpp>
   8 #include "test_qvm_quaternion.hpp"
   9 #include "gold.hpp"
  10
  11 namespace
  12     {
  13     template <class T,class U> struct same_type_tester;
  14     template <class T> struct same_type_tester<T,T> { };
  15     template <class T,class U> void test_same_type( T, U ) { same_type_tester<T,U>(); }
  16
  17     void
  18     test()
  19         {
  20         using namespace boost::qvm::sfinae;
  21             {
  22         test_qvm::quaternion<Q1> const x(42,1);
  23         test_same_type(x,normalized(x));
  24         test_qvm::quaternion<Q1> y=normalized(x);
  25         float m=sqrtf(test_qvm::dot<float>(x.a,x.a));
  26         test_qvm::scalar_multiply_v(y.b,x.a,1/m);
  27         BOOST_QVM_TEST_CLOSE(y.a,y.b,0.000001f);
  28             }
  29             {
  30         test_qvm::quaternion<Q1> const x(42,1);
  31         test_qvm::quaternion<Q1> y=normalized(qref(x));
  32         float m=sqrtf(test_qvm::dot<float>(x.a,x.a));
  33         test_qvm::scalar_multiply_v(y.b,x.a,1/m);
  34         BOOST_QVM_TEST_CLOSE(y.a,y.b,0.000001f);
  35             }
  36             {
  37         test_qvm::quaternion<Q1> x(42,1);
  38         float m=sqrtf(test_qvm::dot<float>(x.a,x.a));
  39         test_qvm::scalar_multiply_v(x.b,x.a,1/m);
  40         normalize(x);
  41         BOOST_QVM_TEST_CLOSE(x.a,x.b,0.000001f);
  42             }
  43         }
  44     }
  45
  46 int
  47 main()
  48     {
  49     test();
  50     return boost::report_errors();
  51     }