System Verilog Queue Methods – insert( )

Queue Methods in System Verilog

Arrays :

                       1. size( )

                       2. delete( )

                                    1.size( )

                                   2. delete( ) & delete(index)

                                   3. insert(  )

                                   4. push( ) methods

                                   5. pop( ) methods

                                   1.size( )

                                   2.delete ( ) & delete(index)

                                  3.num ( )

                                  4.exists( )

                                  5.first( ) ,next( ), prev ( ), last( )

Common  Methods for Dynamic Arrays & Queues :

                   insert(  ) method of Queue in System Verilog

 

3.insert( ):

          –> insert( ) method is one of the inbuilt method of Queue .

          –> insert( ) method will add (or) injects an element at particular position of the Queue. Values (or)

                 elements can be added at any index within the size.

          –> This method requires two arguments . first argument is for index and second argument is for element

                to include in the Queue.

          –> Value can be inserted at the immediate index number after the last index of an array.

          Syntax : array_name.insert(index , value);

          Example : 

                 int pkt[ $ ];

                 pkt = {10,20,30};

                 pkt.insert(1 , 40);  // including value 40 at index 1 

          In the above example we declared a Queue with a name “pkt” . we are calling inbuilt insert( ) method for

          including the value 40 at the index number 1 of a  Queue .The first argument is “1” which represents

          index of Queue and the second argument is  “40” which is the value to be included . 

Animated Video Example for insert( )

 

Simulated_Example:

module tb();

       int array_1[$];

       initial

         begin

           for(int i=0 ; i<5 ; i=i+1)

             begin

              array_1 [i]= i;

             end

           $display(” elements in array_1  = %p “, array_1);

           array_1.insert(0,10);

           $display(” elements in array_1 after inserting value-10 at 0 position= %p”,array_1);

           array_1.insert(3,20);

           $display(” elements in array_1 after inserting value-20 at 3rd position= %p”,array_1);

           array_1.insert(5,50);

           $display(” elements in array_1 after inserting value-50 at 5th position= %p”,array_1);

        end

      endmodule

 

 

 

 

 

Simulator_output : 

*********************************************************************************

elements in array_1  = ‘{0, 1, 2, 3, 4} 

elements in array_1 after inserting value-10 at 0 position= ‘{10, 0, 1, 2, 3, 4}

elements in array_1 after inserting value-20 at 3rd position= ‘{10, 0, 1, 20, 2, 3, 4}

elements in array_1 after inserting value-50 at 5th position= ‘{10, 0, 1, 20, 2, 50, 3, 4}

*********************************************************************************