1 2 static char help[] = "Demonstrates PetscOptionsPush()/PetscOptionsPop().\n\n"; 3 4 #include <petscsys.h> 5 #include <petscoptions.h> 6 int main(int argc,char **argv) 7 { 8 PetscOptions opt1,opt2; 9 PetscInt int1,int2; 10 PetscBool flg1,flg2,flga,match; 11 char str[16]; 12 13 PetscFunctionBeginUser; 14 PetscCall(PetscInitialize(&argc,&argv,(char*)0,help)); 15 16 PetscCall(PetscOptionsCreate(&opt1)); 17 PetscCall(PetscOptionsInsertString(opt1,"-testa a")); 18 PetscCall(PetscOptionsPush(opt1)); 19 PetscCall(PetscOptionsSetValue(NULL,"-test1","1")); 20 PetscCall(PetscOptionsGetInt(NULL,NULL,"-test1",&int1,&flg1)); 21 PetscCheck(flg1 && int1 == 1,PETSC_COMM_WORLD,PETSC_ERR_PLIB,"Unable to locate option test1 or it has the wrong value"); 22 PetscCall(PetscOptionsGetString(NULL,NULL,"-testa",str,sizeof(str),&flga)); 23 PetscCall(PetscStrcmp(str,"a",&match)); 24 PetscCheck(flga && match,PETSC_COMM_WORLD,PETSC_ERR_PLIB,"Unable to locate option testa or it has the wrong value"); 25 PetscCall(PetscOptionsCreate(&opt2)); 26 PetscCall(PetscOptionsPush(opt2)); 27 PetscCall(PetscOptionsSetValue(NULL,"-test2","2")); 28 PetscCall(PetscOptionsGetInt(NULL,NULL,"-test2",&int2,&flg2)); 29 PetscCheck(flg2 && int2 == 2,PETSC_COMM_WORLD,PETSC_ERR_PLIB,"Unable to locate option test2 or it has the wrong value"); 30 PetscCall(PetscOptionsGetInt(NULL,NULL,"-test1",&int1,&flg1)); 31 PetscCheck(!flg1,PETSC_COMM_WORLD,PETSC_ERR_PLIB,"Able to access test1 from a different options database"); 32 33 PetscCall(PetscOptionsPop()); 34 PetscCall(PetscOptionsPop()); 35 PetscCall(PetscOptionsDestroy(&opt2)); 36 PetscCall(PetscOptionsDestroy(&opt1)); 37 PetscCall(PetscFinalize()); 38 return 0; 39 } 40 41 /*TEST 42 43 test: 44 45 TEST*/ 46