1: static char help[] = "Tests catching of floating point exceptions.\n\n";
3: #include <petscsys.h>
5: PetscErrorCode CreateError(PetscReal x)
6: {
7: PetscFunctionBegin;
8: x = 1.0 / x;
9: PetscCall(PetscPrintf(PETSC_COMM_SELF, "x = %g\n", (double)x));
10: PetscFunctionReturn(PETSC_SUCCESS);
11: }
13: int main(int argc, char **argv)
14: {
15: PetscFunctionBeginUser;
16: PetscCall(PetscInitialize(&argc, &argv, (char *)0, help));
17: PetscCall(PetscPrintf(PETSC_COMM_SELF, "This is a contrived example to test floating pointing\n"));
18: PetscCall(PetscPrintf(PETSC_COMM_SELF, "It is not a true error.\n"));
19: PetscCall(PetscPrintf(PETSC_COMM_SELF, "Run with -fp_trap to catch the floating point error\n"));
20: PetscCall(CreateError(0.0));
21: return 0;
22: }
24: /*
26: Because this example may produce different output on different machines we filter out everything.
27: This makes the test ineffective but currently we don't have a good way to know which machines should handle
28: the floating point exceptions properly.
30: */
31: /*TEST
33: test:
34: args: -fp_trap -error_output_stdout
35: filter: Error: true
37: TEST*/