1 2 static char help[] = "Demonstrates PetscDataTypeFromString().\n\n"; 3 4 /*T 5 Concepts: introduction to PETSc; 6 Concepts: printing^in parallel 7 Processors: n 8 T*/ 9 10 #include <petscsys.h> 11 int main(int argc,char **argv) 12 { 13 PetscErrorCode ierr; 14 PetscDataType dtype; 15 PetscBool found; 16 17 /* 18 Every PETSc routine should begin with the PetscInitialize() routine. 19 argc, argv - These command line arguments are taken to extract the options 20 supplied to PETSc and options supplied to MPI. 21 help - When PETSc executable is invoked with the option -help, 22 it prints the various options that can be applied at 23 runtime. The user can use the "help" variable place 24 additional help messages in this printout. 25 */ 26 ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 27 28 ierr = PetscDataTypeFromString("Scalar",&dtype,&found);CHKERRQ(ierr); 29 if (!found) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_WRONG,"Did not find scalar datatype"); 30 if (dtype != PETSC_SCALAR) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_WRONG,"Found wrong datatype for scalar"); 31 32 ierr = PetscDataTypeFromString("INT",&dtype,&found);CHKERRQ(ierr); 33 if (!found) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_WRONG,"Did not find int datatype"); 34 if (dtype != PETSC_INT) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_WRONG,"Found wrong datatype for int"); 35 36 ierr = PetscDataTypeFromString("real",&dtype,&found);CHKERRQ(ierr); 37 if (!found) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_WRONG,"Did not find real datatype"); 38 if (dtype != PETSC_REAL) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_WRONG,"Found wrong datatype for real"); 39 40 ierr = PetscDataTypeFromString("abogusdatatype",&dtype,&found);CHKERRQ(ierr); 41 if (found) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_WRONG,"Found a bogus datatype"); 42 43 ierr = PetscFinalize(); 44 return ierr; 45 } 46 47 48 /*TEST 49 50 test: 51 52 TEST*/ 53