boost/safe_numerics
2
0
Fork 0
mirror of https://github.com/boostorg/safe_numerics.git synced 2026-02-22 03:32:24 +00:00
Code Issues Projects Releases Wiki Activity

Update example1.cpp

Browse Source
This commit is contained in:
insideoutclub
2017-03-02 12:58:36 -08:00
committed by GitHub
parent 82e4ad1d40
commit 8b3769f1d7
1 changed files with 4 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
examples/example1.cpp
View File

@@ -15,10 +15,7 @@ int main(int argc, const char * argv[]){
int z;
// this produces an invalid result !
z = x + y;
// but assert fails to detect it since C++ implicitly
// converts variables to int before evaluating he expression!
// assert(z == x + y);
std::cout << static_cast<int>(z) << " != " << x + y << std::endl;
std::cout << z << " != " << x + y << std::endl;
std::cout << "error NOT detected!" << std::endl;
}
catch(std::exception){
@@ -28,14 +25,14 @@ int main(int argc, const char * argv[]){
std::cout << "Using safe numerics" << std::endl;
try{
using namespace boost::numeric;
safe<int> x = 127;
safe<int> x = INT_MAX;
safe<int> y = 2;
safe<int> z;
// rather than producing and invalid result an exception is thrown
// rather than producing an invalid result an exception is thrown
z = x + y;
}
catch(std::exception & e){
// which can catch here
// which we can catch here
std::cout << e.what() << std::endl;
}
return 0;