mirror of
https://github.com/boostorg/safe_numerics.git
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262 lines
8.4 KiB
C++
262 lines
8.4 KiB
C++
// Copyright (c) 2012 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 <exception>
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#include <cxxabi.h>
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#include "../include/safe_integer.hpp"
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#include "../include/automatic.hpp"
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template <class T>
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using safe_t = boost::numeric::safe<
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T,
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boost::numeric::automatic
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>;
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template<class T1, class T2>
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bool test_add(
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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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{
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std::cout << "testing safe<" << av1 << "> + " << av2 << " -> ";
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static_assert(boost::numeric::is_safe<safe_t<T1> >::value, "safe_t not safe!");
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safe_t<T1> t1 = v1;
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using result_type = decltype(t1 + v2);
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result_type result;
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static_assert(
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boost::numeric::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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result = t1 + v2;
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std::cout << std::hex << result << "(" << std::dec << result << ")"
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<< std::endl;
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if(expected_result == 'x'){
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const std::type_info & ti = typeid(result);
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int status;
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std::cout
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<< "*** failed to detect error in addition "
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<< abi::__cxa_demangle(ti.name(),0,0,&status) << '\n'
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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(std::exception){}
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return false;
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}
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}
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catch(std::exception){
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std::cout << std::hex << result << "(" << std::dec << result << ")"
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<< std::endl;
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if(expected_result == '.'){
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const std::type_info & ti = typeid(result);
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int status;
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std::cout
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<< "*** erroneously detected error in addition "
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<< abi::__cxa_demangle(ti.name(),0,0,&status) << '\n'
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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(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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std::cout << "testing " << av1 << " + " << "safe<"<< av2 << "> -> ";
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static_assert(boost::numeric::is_safe<safe_t<T2> >::value, "safe_t not safe!");
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safe_t<T2> t2 = v2;
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using result_type = decltype(v1 + t2);
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result_type result;
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static_assert(
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boost::numeric::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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result = v1 + t2;
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std::cout << std::hex << result << "(" << std::dec << result << ")"
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<< std::endl;
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if(expected_result == 'x'){
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const std::type_info & ti = typeid(result);
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int status;
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std::cout
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<< "*** failed to detect error in addition "
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<< abi::__cxa_demangle(ti.name(),0,0,&status) << '\n'
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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(std::exception){}
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return false;
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}
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}
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catch(std::exception){
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std::cout << std::hex << result << "(" << std::dec << result << ")"
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<< std::endl;
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if(expected_result == '.'){
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const std::type_info & ti = typeid(result);
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int status;
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std::cout
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<< "*** erroneously detected error in addition "
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<< abi::__cxa_demangle(ti.name(),0,0,&status) << '\n'
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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(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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std::cout << "testing safe<" << av1 << "> + safe<" << av2 << "> -> ";
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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 + v2);
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result_type result;
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static_assert(
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boost::numeric::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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result = t1 + t2;
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std::cout << std::hex << result << "(" << std::dec << result << ")"
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<< std::endl;
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if(expected_result == 'x'){
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const std::type_info & ti = typeid(result);
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int status;
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std::cout
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<< "*** failed to detect error in addition "
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<< abi::__cxa_demangle(ti.name(),0,0,&status) << '\n'
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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(std::exception){}
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return false;
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}
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}
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catch(std::exception){
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std::cout << std::hex << result << "(" << std::dec << result << ")"
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<< std::endl;
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if(expected_result == '.'){
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const std::type_info & ti = typeid(result);
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int status;
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std::cout
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<< "*** erroneously detected error in addition "
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<< abi::__cxa_demangle(ti.name(),0,0,&status) << '\n'
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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(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; // correct result
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}
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#include "test.hpp"
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#include "test_values.hpp"
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// note: same test matrix as used in test_checked. Here we test all combinations
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// safe and unsafe integers. in test_checked we test all combinations of
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// integer primitives
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const char *test_addition_result[VALUE_ARRAY_SIZE] = {
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// 0 0 0 0
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// 01234567012345670123456701234567
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// 01234567890123456789012345678901
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/* 0*/ ".............x.................x",
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/* 1*/ ".............x.................x",
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/* 2*/ "..............x.............xxxx",
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/* 3*/ "..............x.............xxxx",
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/* 4*/ ".............x.................x",
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/* 5*/ ".............x.................x",
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/* 6*/ "..............x.............xxxx",
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/* 7*/ "..............x.............xxxx",
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/* 8*/ ".............x.................x",
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/* 9*/ ".............x.................x",
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/*10*/ "..............x.............xxxx",
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/*11*/ "..............x.............xxxx",
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/*12*/ ".............x.................x",
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/*13*/ "xx..xx..xx..xx..xxxxxxxxxxxx...x",
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/*14*/ "..xx..xx..xx..xx............xxxx",
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/*15*/ "..............x.............xxxx",
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// 0 0 0 0
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// 01234567012345670123456701234567
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// 01234567890123456789012345678901
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/*16*/ ".............x.................x",
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/*17*/ ".............x.................x",
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/*18*/ ".............x.................x",
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/*19*/ ".............x.................x",
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/*20*/ ".............x.................x",
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/*21*/ ".............x.................x",
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/*22*/ ".............x.................x",
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/*23*/ ".............x.................x",
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/*24*/ ".............x.................x",
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/*25*/ ".............x.................x",
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/*26*/ ".............x.................x",
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/*27*/ ".............x.................x",
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/*28*/ "..xx..xx..xx..xx...............x",
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/*29*/ "..xx..xx..xx..xx...............x",
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/*30*/ "..xx..xx..xx..xx..............xx",
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/*31*/ "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
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};
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#define TEST_IMPL(v1, v2, result) \
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rval &= test_add( \
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v1, \
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v2, \
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BOOST_PP_STRINGIZE(v1), \
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BOOST_PP_STRINGIZE(v2), \
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result \
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);
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/**/
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#define TESTX(value_index1, value_index2) \
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(std::cout << value_index1 << ',' << value_index2 << std::endl); \
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TEST_IMPL( \
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BOOST_PP_ARRAY_ELEM(value_index1, VALUES), \
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BOOST_PP_ARRAY_ELEM(value_index2, VALUES), \
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test_addition_result[value_index1][value_index2] \
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)
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/**/
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int main(int argc, char * argv[]){
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// sanity check on test matrix - should be symetrical
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for(int i = 0; i < VALUE_ARRAY_SIZE; ++i)
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for(int j = i + 1; j < VALUE_ARRAY_SIZE; ++j)
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if(test_addition_result[i][j] != test_addition_result[j][i]){
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std::cout << i << ',' << j << std::endl;
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return 1;
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}
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bool rval = true;
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TEST_EACH_VALUE_PAIR
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return ! rval ;
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}
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