FloatingPointExceptions
VTKExamples/Cxx/SimpleOperations/FloatingPointExceptions
Description
This example makes the illegal division by zero produce an error: Error: Floating point exception detected. Signal 8 rather than simply store "inf" in y.
Code
FloatingPointExceptions.cxx
#include <vtkFloatingPointExceptions.h>
// Avoid the "potential divide by 0" warning from the Microsoft
// compiler, since this example intentionally divides by 0
#ifdef _MSC_VER
#pragma warning (disable: 4723)
#endif
int main(int, char *[])
{
// Disabled by default with gcc or visual studio.
// Enabled by default by Borland CC.
vtkFloatingPointExceptions::Enable();
double x = 0.0;
double y = 1.0/x; // floating-point exception
std::cout << "x: " << x << " y: " << y << std::endl;
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(FloatingPointExceptions)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(FloatingPointExceptions MACOSX_BUNDLE FloatingPointExceptions.cxx)
target_link_libraries(FloatingPointExceptions ${VTK_LIBRARIES})
Download and Build FloatingPointExceptions
Click here to download FloatingPointExceptions and its CMakeLists.txt file. Once the tarball FloatingPointExceptions.tar has been downloaded and extracted,
cd FloatingPointExceptions/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./FloatingPointExceptions
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.