mirror of
https://github.com/boostorg/safe_numerics.git
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276 lines
8.9 KiB
C++
276 lines
8.9 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_multiply_auto(
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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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using namespace boost::numeric;
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auto unsafe_result = v1 + v2;
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{
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std::cout << "testing safe<" << av1 << "> * " << av2 << " -> ";
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static_assert(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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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 multiplication "
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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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assert(result != unsafe_result);
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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 multiplication "
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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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assert(result == unsafe_result);
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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(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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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 multiplication "
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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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assert(result != unsafe_result);
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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 multiplication "
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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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assert(result == unsafe_result);
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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 * t2);
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result_type result;
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static_assert(
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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 multiplication "
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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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assert(result != unsafe_result);
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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 multiplication "
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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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assert(result == unsafe_result);
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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_multiplication_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*/ "................................",
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/* 1*/ ".............xx..............xxx",
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/* 2*/ ".............xx.............xxxx",
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/* 3*/ "..............x.............xxxx",
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/* 4*/ "................................",
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/* 5*/ ".............xx..............xxx",
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/* 6*/ ".............xx.............xxxx",
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/* 7*/ "..............x.............xxxx",
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/* 8*/ "................................",
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/* 9*/ ".............xx..............xxx",
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/*10*/ ".............xx.............xxxx",
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/*11*/ "..............x.............xxxx",
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/*12*/ "................................",
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/*13*/ ".xx..xx..xx..xx..xxx.xxx.xxx.xxx",
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/*14*/ ".xxx.xxx.xxx.xxx.xxx.xxx.xxxxxxx",
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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*/ "................................",
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/*17*/ ".............xx..............xxx",
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/*18*/ ".............xx..............xxx",
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/*19*/ ".............xx..............xxx",
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/*20*/ "................................",
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/*21*/ ".............xx..............xxx",
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/*22*/ ".............xx..............xxx",
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/*23*/ ".............xx..............xxx",
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/*24*/ "................................",
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/*25*/ ".............xx..............xxx",
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/*26*/ ".............xx..............xxx",
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/*27*/ ".............xx..............xxx",
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/*28*/ "..xx..xx..xx..xx................",
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/*29*/ ".xxx.xxx.xxx.xxx.xxx.xxx.xxx.xxx",
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/*30*/ ".xxx.xxx.xxx.xxx.xxx.xxx.xxx.xxx",
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/*31*/ ".xxx.xxx.xxx.xxx.xxx.xxx.xxx.xxx"
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};
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#define TEST_PRINT(i1, i2) \
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(std::cout << i1 << ',' << i2 << ' ' \
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<< test_multiplication_result[i1][i2] \
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<< std::endl);
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#define TEST_IMPL(v1, v2, result) \
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rval &= test_multiply_auto( \
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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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TEST_PRINT(value_index1, value_index2); \
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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_multiplication_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_multiplication_result[i][j] != test_multiplication_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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