Actual source code: ex3.c
petsc-3.12.4 2020-02-04
Report Typos and Errors

      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: }

     28: /*

     30:     Because this example may produce different output on different machines we filter out everything.
     31:     This makes the test ineffective but currently we don't have a good way to know which machines should handle
     32:     the floating point exceptions properly.

     34: */
     35: /*TEST

     37:    test:
     38:       args: -fp_trap -error_output_stdout
     39:       filter: Error: true

     41: TEST*/