1 2 static char help[] = "Tests catching of floating point exceptions.\n\n"; 3 4 #include <petscsys.h> 5 6 int CreateError(PetscReal x) { 7 PetscFunctionBegin; 8 x = 1.0 / x; 9 PetscCall(PetscPrintf(PETSC_COMM_SELF, "x = %g\n", (double)x)); 10 PetscFunctionReturn(0); 11 } 12 13 int main(int argc, char **argv) { 14 PetscFunctionBeginUser; 15 PetscCall(PetscInitialize(&argc, &argv, (char *)0, help)); 16 PetscCall(PetscPrintf(PETSC_COMM_SELF, "This is a contrived example to test floating pointing\n")); 17 PetscCall(PetscPrintf(PETSC_COMM_SELF, "It is not a true error.\n")); 18 PetscCall(PetscPrintf(PETSC_COMM_SELF, "Run with -fp_trap to catch the floating point error\n")); 19 PetscCall(CreateError(0.0)); 20 return 0; 21 } 22 23 /* 24 25 Because this example may produce different output on different machines we filter out everything. 26 This makes the test ineffective but currently we don't have a good way to know which machines should handle 27 the floating point exceptions properly. 28 29 */ 30 /*TEST 31 32 test: 33 args: -fp_trap -error_output_stdout 34 filter: Error: true 35 36 TEST*/ 37