Actual source code: ex3.c


  2: static char help[] = "Tests catching of floating point exceptions.\n\n";

  4: #include <petscsys.h>

  6: int CreateError(PetscReal x)
  7: {
  8:   x    = 1.0/x;
  9:   PetscPrintf(PETSC_COMM_SELF,"x = %g\n",(double)x);
 10:   return 0;
 11: }

 13: int main(int argc,char **argv)
 14: {
 15:   PetscInitialize(&argc,&argv,(char*)0,help);
 16:   PetscPrintf(PETSC_COMM_SELF,"This is a contrived example to test floating pointing\n");
 17:   PetscPrintf(PETSC_COMM_SELF,"It is not a true error.\n");
 18:   PetscPrintf(PETSC_COMM_SELF,"Run with -fp_trap to catch the floating point error\n");
 19:   CreateError(0.0);
 20:   return 0;
 21: }

 23: /*

 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.

 29: */
 30: /*TEST

 32:    test:
 33:       args: -fp_trap -error_output_stdout
 34:       filter: Error: true

 36: TEST*/