void hillclimbing(int (*cube)[CUBE],int x,int y,int (*target)[CUBE]){
struct Node *currentnode=malloc(sizeof(struct Node));
currentnode->x=x,currentnode->y=y,currentnode->prev=NULL;
cube_copy(cube,currentnode->cube);
push(currentnode);
struct Node *node;
int tmpcube[CUBE][CUBE];
while(!empty()){
currentnode=top();
if(cube_equal(currentnode->cube,target)){
displayoutcome(currentnode);
break;
}
pop();
nodesszie=0;
//up
cube_copy(currentnode->cube,tmpcube);
if(currentnode->x > 0){
move_up(tmpcube,currentnode->x,currentnode->y);
if(!inme(currentnode,tmpcube)){
node=malloc(sizeof(struct Node));
cube_copy(tmpcube,node->cube);
node->x=currentnode->x-1,node->y=currentnode->y;
node->prev=currentnode;
push(node);
}
}
//down
cube_copy(currentnode->cube,tmpcube);
if(currentnode->x <CUBE-1){
move_down(tmpcube,currentnode->x,currentnode->y);
if(!inme(currentnode,tmpcube)){
node=malloc(sizeof(struct Node));
cube_copy(tmpcube,node->cube);
node->x=currentnode->x+1,node->y=currentnode->y;
node->prev=currentnode;
push(node);
}
}
//left
cube_copy(currentnode->cube,tmpcube);
if(currentnode->y > 0){
move_left(tmpcube,currentnode->x,currentnode->y);
if(!inme(currentnode,tmpcube)){
node=malloc(sizeof(struct Node));
cube_copy(tmpcube,node->cube);
node->x=currentnode->x,node->y=currentnode->y-1;
node->prev=currentnode;
push(node);
}
}
//right
cube_copy(currentnode->cube,tmpcube);
if(currentnode->y < CUBE-1){
move_right(tmpcube,currentnode->x,currentnode->y);
if(!inme(currentnode,tmpcube)){
node=malloc(sizeof(struct Node));
cube_copy(tmpcube,node->cube);
node->x=currentnode->x,node->y=currentnode->y+1;
node->prev=currentnode;
push(node);
}
}
}
}
int main(int argc, char **argv)
{
int index1,index2;
CUBE F,R,D;
CUBE W; /*this will store the original ON-set function*/
CUBE V; /*this will store the espresso expand output*/
/*in case of improper invocation*/
if(argc != 4)
{
printf("Please check the usage:\n");
printf("Usage: ./logic_min <input_file> <file_flag> <output_file\n");
printf("Example ./logic_min input_file -e\n");
exit(0);
}
/*parse the input file and build up the ON-set,
*OFF-set and dont-care set*/
read_inputs_from_file(&F,&R,&D,argv[1]);
/*preserve org onset function*/
cube_copy(&W, &F);
/*call the expand function*/
expand(&F,&R);
/*printing party*/
printf("\nJust after Espresso Expand and before logic_min\n");
printf("\n**********************************************\n");
printf("\nThe ON set is %d %d\n",F.rows,F.cols);
print_cube(&F);
printf("\n");
printf("\nThe OFF set is %d %d\n",R.rows,R.cols);
print_cube(&R);
printf("\n");
printf("\nThe DONT CARE set is %d %d\n",D.rows,D.cols);
print_cube(&D);
printf("\n");
printf("\n**********************************************\n");
/*preserve the espresso expand output*/
cube_copy(&V, &F);
/*logic minimization routine*/
logic_min(&F);
/*parse the command line argument to check what type of
* output file needs to be generated*/
if (strcmp(argv[2],"-e") == 0)
{
text_file_output(&W, &V, &R, &D,argv[3], ESPEXP_TEXT_OUTPUT);
}
else if (strcmp(argv[2],"-t") == 0)
{
text_file_output(&W, &F, &R, &D,argv[3], OPT_TEXT_OUTPUT);
}
else if (strcmp(argv[2],"-v") == 0)
{
verilog_file_output(&F, argv[3]);
}
else
{
printf("Invalid flag.\n");
}
}/*end of main*/
