UVM Report.

• Formatting
• $sformat (str, "%m : a = $2h", a);
• $timeformat (-9, 2, " ps", 4);
• timeunit 100ps;
• timeprecision 10ps;
• System Calls
• $display
• $fdisplay - to write to files.
• $time, $stime, $realtime,
• Opening Files
• integer fha = $fopen("fileaname");
• integer fhb = $fopen("filebname");
• integer fhboth = filea | fileb;
• $fdisplay (fha, "string");
• $fclose (fhboth);
• UVM_macros for Reporting
• $display (`__FILE__);
• `uvm_info ("message_ID", "This is info message", verbose_level, UVM_INFO);
• `uvm_warning ("message_ID", "message", Severity);
• `uvm_error ("message_ID", "message", Severity);
• `uvm_fatal ("message_ID", "message", Severity);
• Each reporting method call gets a verbosity number
• The object has a reporting verbosity number
• The method acts only if its verbosity number is below the object's verbosity number
• inst.set_report_verbosity_level_hier (800);
• UVM Report Control
• Verbosity level set
• Reporting methods for actions
• in end_of_elaboration_phase
• UVM_DISPLAY
• UVM_LOG - write to a file
• Open the file(s) and get the MCDs
• Set the logging action on the ID's
• Attach the MCDs to the severities or ID's
• set_report_default_file() 
• set_report_id_file ("printer", printer_file);
• set_report_severity_action
  (UVM_WARNING, UVM_DISPLAY | UVM_LOG);
• set_report_severity_file (UVM_WARNING, warning_file);
• dump_report_state();
• set_report_max_quit_count (10);
• UVM_COUNT
• UVM_EXIT
• UVM_CALL_HOOK - call user defined method
• UVM_STOP
• Reporting action controls
• set_severity_action (severity sv, action a)
• set_id_action (string id, action a)
• set_severity_id_action (severity sv, string id, action a)
• set_severity_action_hier (severity sv, action a)
• set_id_action_hier (string id, action a)
• set_severity_id_action_hier (severity sv, string id, action a)
• Default:
• UVM_INFO            : UVM_DISPLAY
• UVM_WARNING  : UVM_DISPLAY
• UVM_ERROR        : UVM_DISPLAY  |  UVM_COUNT
• UVM_FATAL         : UVM_DISPLAY  |  UVM_EXIT
• File ID