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 { 8 PetscFunctionBegin; 9 x = 1.0/x; 10 PetscCall(PetscPrintf(PETSC_COMM_SELF,"x = %g\n",(double)x)); 11 PetscFunctionReturn(0); 12 } 13 14 int main(int argc,char **argv) 15 { 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 } 23 24 /* 25 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. 29 30 */ 31 /*TEST 32 33 test: 34 args: -fp_trap -error_output_stdout 35 filter: Error: true 36 37 TEST*/ 38