Stats

  • Locked Locked
  • Replies 1
  • Subscribers 65
  • Views 13182
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

why ! is used while declaring instances in specman

LATHEESH

Why ! is used while declaring instances in specman,

!add: add_type;

what is the difference between using ! and not using it.

 

Parents

  • The "!" is used to denote items that should not be pre-generated (randomized). This would typically be used for a field such as parity that you would use a method to compute and assign or an object that you would want to generate procedurally.

    <'

    import sbt_packet.e;

    extend sys {

       packet1: sbt_packet_s;

       !pkt: sbt_packet_s;

       run() is also {                   

          gen pkt;

          for j from 0 to 2 {

            gen pkt keeping {           

              it.addr == j;

              it.len < 20;

            };

          };

       };

    };

    '>

Reply

  • The "!" is used to denote items that should not be pre-generated (randomized). This would typically be used for a field such as parity that you would use a method to compute and assign or an object that you would want to generate procedurally.

    <'

    import sbt_packet.e;

    extend sys {

       packet1: sbt_packet_s;

       !pkt: sbt_packet_s;

       run() is also {                   

          gen pkt;

          for j from 0 to 2 {

            gen pkt keeping {           

              it.addr == j;

              it.len < 20;

            };

          };

       };

    };

    '>

Children
No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.