2: static char help[] = "Tests catching of floating point exceptions.\n\n";
4: #include <petscsys.h>
6: int CreateError(PetscReal x)
7: {
11: x = 1.0/x;
12: PetscPrintf(PETSC_COMM_SELF,"x = %g\n",(double)x);
13: return(0);
14: }
16: int main(int argc,char **argv)
17: {
19: PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr;
20: PetscPrintf(PETSC_COMM_SELF,"This is a contrived example to test floating pointing\n");
21: PetscPrintf(PETSC_COMM_SELF,"It is not a true error.\n");
22: PetscPrintf(PETSC_COMM_SELF,"Run with -fp_trap to catch the floating point error\n");
23: CreateError(0.0);
24: return 0;
25: }
27: /*
29: Because this example may produce different output on different machines we filter out everything.
30: This makes the test ineffective but currently we don't have a good way to know which machines should handle
31: the floating point exceptions properly.
33: */
34: /*TEST
36: test:
37: args: -fp_trap -error_output_stdout
38: filter: Error: true
40: TEST*/