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randcase
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The randcase statement specifies a block of statements, one of which is executed randomly. The keyword randcase introduces a case statement that randomly selects one of its branches. The randcase item expressions are non-negative integral values that constitute the branch weights. An item's weight divided by the sum of all weights gives the probability of taking that branch. |
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Syntax : randcase |
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statement_item ::=
...
| randcase_statement
randcase_statement ::=
randcase randcase_item { randcase_item } endcase
randcase_item ::= expression : statement_or_null
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Example : randcase
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1 module randcase_statement;
2
3 task do_randcase();
4 begin
5 randcase
6 20 : begin
7 $write ("What should I do ? \n");
8 end
9 20 : begin
10 $write ("Should I work\n");
11 end
12 20 : begin
13 $write ("Should I watch Movie\n");
14 end
15 40 : begin
16 $write ("Should I complete tutorial\n");
17 end
18 endcase
19 end
20 endtask
21
22 initial begin
23 repeat(10) begin
24 // You need to run for more iteration to
25 // get proper distribution
26 do_randcase();
27 end
28 $finish;
29 end
30 endmodule
You could download file randcase_statement.sv here
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Simulation : randcase
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Should I watch Movie
Should I complete tutorial
Should I watch Movie
What should I do ?
Should I complete tutorial
Should I watch Movie
Should I complete tutorial
Should I complete tutorial
Should I work
Should I watch Movie
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Copyright © 1998-2014 |
Deepak Kumar Tala - All rights reserved |
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Do you have any Comment? mail me at:deepak@asic-world.com
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