static char help[] = "Demonstrates PetscDataTypeFromString().\n\n";

#include <petscsys.h>
int main(int argc, char **argv)
{
  PetscDataType dtype;
  PetscBool     found;

  /*
    Every PETSc routine should begin with the PetscInitialize() routine.
    argc, argv - These command line arguments are taken to extract the options
                 supplied to PETSc and options supplied to MPI.
    help       - When PETSc executable is invoked with the option -help,
                 it prints the various options that can be applied at
                 runtime.  The user can use the "help" variable place
                 additional help messages in this printout.
  */
  PetscFunctionBeginUser;
  PetscCall(PetscInitialize(&argc, &argv, NULL, help));

  PetscCall(PetscDataTypeFromString("Scalar", &dtype, &found));
  PetscCheck(found, PETSC_COMM_WORLD, PETSC_ERR_ARG_WRONG, "Did not find scalar datatype");
  PetscCheck(dtype == PETSC_SCALAR, PETSC_COMM_WORLD, PETSC_ERR_ARG_WRONG, "Found wrong datatype for scalar");

  PetscCall(PetscDataTypeFromString("INT", &dtype, &found));
  PetscCheck(found, PETSC_COMM_WORLD, PETSC_ERR_ARG_WRONG, "Did not find int datatype");
  PetscCheck(dtype == PETSC_INT, PETSC_COMM_WORLD, PETSC_ERR_ARG_WRONG, "Found wrong datatype for int");

  PetscCall(PetscDataTypeFromString("real", &dtype, &found));
  PetscCheck(found, PETSC_COMM_WORLD, PETSC_ERR_ARG_WRONG, "Did not find real datatype");
  PetscCheck(dtype == PETSC_REAL, PETSC_COMM_WORLD, PETSC_ERR_ARG_WRONG, "Found wrong datatype for real");

  PetscCall(PetscDataTypeFromString("abogusdatatype", &dtype, &found));
  PetscCheck(!found, PETSC_COMM_WORLD, PETSC_ERR_ARG_WRONG, "Found a bogus datatype");

  PetscCall(PetscFinalize());
  return 0;
}

/*TEST

   test:
     output_file: output/empty.out

TEST*/