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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:45:59 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:45:59 +0000
commit19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch)
tree42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/boost/libs/safe_numerics/example/example84.cpp
parentInitial commit. (diff)
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Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/boost/libs/safe_numerics/example/example84.cpp')
-rw-r--r--src/boost/libs/safe_numerics/example/example84.cpp66
1 files changed, 66 insertions, 0 deletions
diff --git a/src/boost/libs/safe_numerics/example/example84.cpp b/src/boost/libs/safe_numerics/example/example84.cpp
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+++ b/src/boost/libs/safe_numerics/example/example84.cpp
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+#include <stdexcept>
+#include <iostream>
+#include <sstream>
+
+#include <boost/safe_numerics/safe_integer.hpp>
+#include <boost/safe_numerics/safe_integer_range.hpp>
+#include <boost/safe_numerics/native.hpp>
+#include <boost/safe_numerics/exception.hpp>
+
+#include "safe_format.hpp" // prints out range and value of any type
+
+using namespace boost::safe_numerics;
+
+using safe_t = safe_signed_range<
+ -24,
+ 82,
+ native,
+ loose_trap_policy
+>;
+
+// define variables used for input
+using input_safe_t = safe_signed_range<
+ -24,
+ 82,
+ native, // we don't need automatic in this case
+ loose_exception_policy // assignment of out of range value should throw
+>;
+
+// function arguments can never be outside of limits
+auto f(const safe_t & x, const safe_t & y){
+ auto z = x + y; // we know that this cannot fail
+ std::cout << "z = " << safe_format(z) << std::endl;
+ std::cout << "(x + y) = " << safe_format(x + y) << std::endl;
+ std::cout << "(x - y) = " << safe_format(x - y) << std::endl;
+ return z;
+}
+
+bool test(const char * test_string){
+ std::istringstream sin(test_string);
+ input_safe_t x, y;
+ try{
+ std::cout << "type in values in format x y:" << test_string << std::endl;
+ sin >> x >> y; // read varibles, maybe throw exception
+ }
+ catch(const std::exception & e){
+ // none of the above should trap. Mark failure if they do
+ std::cout << e.what() << '\n' << "input failure" << std::endl;
+ return false;
+ }
+ std::cout << "x" << safe_format(x) << std::endl;
+ std::cout << "y" << safe_format(y) << std::endl;
+ std::cout << safe_format(f(x, y)) << std::endl;
+ std::cout << "input success" << std::endl;
+ return true;
+}
+
+int main(){
+ std::cout << "example 84:\n";
+ bool result =
+ ! test("123 125")
+ && test("0 0")
+ && test("-24 82")
+ ;
+ std::cout << (result ? "Success!" : "Failure") << std::endl;
+ return result ? EXIT_SUCCESS : EXIT_FAILURE;
+}