ceph/src/boost/libs/units/test/test_close.hpp

   1 /*
   2 Copyright 2021 Glen Joseph Fernandes
   3 (glenjofe@gmail.com)
   4
   5 Distributed under the Boost Software License, Version 1.0.
   6 (http://www.boost.org/LICENSE_1_0.txt)
   7 */
   8 #ifndef BOOST_UNITS_TEST_CLOSE_HPP
   9 #define BOOST_UNITS_TEST_CLOSE_HPP
  10
  11 #include <boost/core/lightweight_test.hpp>
  12 #include <algorithm>
  13 #include <limits>
  14 #include <cmath>
  15
  16 /*
  17 Provide a predicate for BOOST_TEST_WITH that is equivalent to
  18 what was provided by the previous test framework.
  19 */
  20 class close_to {
  21 public:
  22     explicit close_to(double f)
  23         : f_(f) { }
  24
  25     bool operator()(double l, double r) const {
  26         return std::abs(l - r) <=
  27             (std::max)(f_ * (std::max)(std::abs(l), std::abs(r)), 0.);
  28     }
  29
  30 private:
  31     double f_;
  32 };
  33
  34 #define BOOST_UNITS_TEST_CLOSE(l,r,f) BOOST_TEST_WITH((l),(r),close_to((f)))
  35
  36 #endif