mirror of
https://github.com/boostorg/safe_numerics.git
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145 lines
4.3 KiB
C++
145 lines
4.3 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 <cassert>
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#include "../include/safe_integer.hpp"
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// we could have used decltype and auto for C++11 but we've decided
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// to use boost/typeof to be compatible with older compilers
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#include <boost/typeof/typeof.hpp>
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#include "test.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
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<< "testing "
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<< av1 << " % " << av2
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<< std::endl;
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boost::numeric::safe<T1> t1 = v1;
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BOOST_TYPEOF_TPL(T1() / T2()) result;
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try{
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result = t1 % v2;
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if(expected_result != '.'){
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//if(expected_result == 'x'){
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std::cout
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<< "failed to detect error in division "
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<< std::hex << result << "(" << std::dec << result << ")"
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<< " ! = "<< av1 << " % " << av2
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<< std::endl;
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try{
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result = t1 % v2;
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}
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catch(...){}
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return false;
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}
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}
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catch(std::range_error){
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if(expected_result != 'x'){
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//if(expected_result == '.'){
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std::cout
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<< "erroneously detected error in division "
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<< std::hex << result << "(" << std::dec << result << ")"
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<< " == "<< av1 << " % " << av2
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<< std::endl;
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try{
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result = t1 % v2;
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}
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catch(...){}
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return false;
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}
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}
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return true;
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}
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#include "test.hpp"
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#include "test_values.hpp"
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// note: These tables presume that the the size of an int is 32 bits.
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// This should be changed for a different architecture or better yet
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// be dynamically adjusted depending on the indicated architecture
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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*/ "................................",
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/* 2*/ "...x...x...x...x................",
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/* 3*/ "................................",
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/* 4*/ ".................................",
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/* 5*/ "................................",
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/* 6*/ "...x...x...x...x................",
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/* 7*/ "................................",
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/* 8*/ "................................",
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/* 9*/ "................................",
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/*10*/ "...x...x...x...x................",
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/*11*/ "................................",
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/*12*/ "................................",
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/*13*/ "................................",
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/*14*/ "...x...x...x...x................",
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/*15*/ "................................",
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// 0 0 0 0
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// 01234567012345670123456701234567
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// 01234567890123456789012345678901
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/*16*/ "..xx..xx..xx..xx................",
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/*17*/ "..xx..xx..xx..xx................",
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/*18*/ "..xx..xx..xx..xx................",
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/*19*/ "..xx..xx..xx..xx................",
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/*20*/ "..xx..xx..xx..xx................",
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/*21*/ "..xx..xx..xx..xx................",
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/*22*/ "..xx..xx..xx..xx................",
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/*23*/ "..xx..xx..xx..xx................",
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/*24*/ "..xx..xx..xx..xx................",
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/*25*/ "..xx..xx..xx..xx................",
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/*26*/ "..xx..xx..xx..xx................",
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/*27*/ "..xx..xx..xx..xx................",
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/*28*/ "..xx..xx..xx..xx................",
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/*29*/ "..xx..xx..xx..xx................",
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/*30*/ "..xx..xx..xx..xx................",
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/*31*/ "..xx..xx..xx..xx................"
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};
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#define TEST_IMPL(v1, v2, result) \
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rval &= test_modulus( \
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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 << ','); \
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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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#define COUNT sizeof(test_multiplication_result)
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int main(int argc, char * argv[]){
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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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