154 lines
4.6 KiB
C++
154 lines
4.6 KiB
C++
#ifndef BOOST_TEST_MODULUS_HPP
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#define BOOST_TEST_MODULUS_HPP
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// Copyright (c) 2015 Robert Ramey
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <iostream>
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#include <boost/safe_numerics/safe_integer.hpp>
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#include <boost/safe_numerics/range_value.hpp>
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template<class T1, class T2>
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bool test_modulus(
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T1 v1,
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T2 v2,
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const char *av1,
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const char *av2,
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char expected_result
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){
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std::cout << "testing"<< std::endl;
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{
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safe_t<T1> t1 = v1;
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using result_type = decltype(t1 % v2);
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std::cout << "safe<" << av1 << "> % " << av2 << " -> ";
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static_assert(
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boost::safe_numerics::is_safe<safe_t<T1> >::value,
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"safe_t not safe!"
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);
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static_assert(
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boost::safe_numerics::is_safe<result_type>::value,
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"Expression failed to return safe type"
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);
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try{
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// use auto to avoid checking assignment.
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auto result = t1 % v2;
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std::cout << make_result_display(result);
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if(expected_result == 'x'){
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std::cout
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<< " ! = "<< av1 << " % " << av2
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<< " failed to detect error in modulus"
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<< std::endl;
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t1 % v2;
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return false;
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}
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std::cout << std::endl;
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}
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catch(const std::exception &){
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if(expected_result == '.'){
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std::cout
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<< " == "<< av1 << " % " << av2
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<< " erroneously detected error in modulus"
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<< std::endl;
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try{
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t1 % v2;
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}
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catch(const std::exception &){}
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return false;
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}
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}
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}
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{
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safe_t<T2> t2 = v2;
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using result_type = decltype(v1 % t2);
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std::cout << av1 << " % " << "safe<" << av2 << "> -> ";
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static_assert(
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boost::safe_numerics::is_safe<safe_t<T2> >::value,
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"safe_t not safe!"
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);
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static_assert(
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boost::safe_numerics::is_safe<result_type>::value,
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"Expression failed to return safe type"
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);
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try{
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// use auto to avoid checking assignment.
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auto result = v1 % t2;
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std::cout << make_result_display(result);
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if(expected_result =='x'){
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std::cout
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<< " ! = "<< av1 << " % " << av2
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<< " failed to detect error in modulus"
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<< std::endl;
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try{
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v1 % t2;
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}
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catch(const std::exception &){}
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return false;
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}
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std::cout << std::endl;
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}
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catch(const std::exception &){
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if(expected_result != 'x'){
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std::cout
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<< " == "<< av1 << " % " << av2
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<< " erroneously detected error in modulus"
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<< std::endl;
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try{
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v1 % t2;
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}
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catch(const std::exception &){}
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return false;
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}
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}
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}
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{
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safe_t<T1> t1 = v1;
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safe_t<T2> t2 = v2;
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using result_type = decltype(t1 + t2);
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std::cout << "safe<" << av1 << "> % " << "safe<" << av2 << "> -> ";
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static_assert(
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boost::safe_numerics::is_safe<result_type>::value,
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"Expression failed to return safe type"
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);
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try{
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// use auto to avoid checking assignment.
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auto result = t1 % t2;
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std::cout << make_result_display(result);
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if(expected_result != '.'){
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std::cout
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<< " ! = "<< av1 << " % " << av2
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<< " failed to detect error in modulus"
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<< std::endl;
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try{
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t1 % t2;
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}
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catch(const std::exception &){}
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return false;
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}
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std::cout << std::endl;
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}
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catch(const std::exception &){
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if(expected_result != 'x'){
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std::cout
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<< " == "<< av1 << " % " << av2
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<< " erroneously detected error in modulus"
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<< std::endl;
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try{
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t1 % t2;
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}
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catch(const std::exception &){}
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return false;
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}
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}
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}
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return true;
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}
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#endif // BOOST_TEST_MODULUS
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