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module testbench;
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// This should give us a vector of [-1:0] (A == 0).
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parameter A = $clog2(1);
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wire [A-1:0] x;
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wire [A-1:0] y = x;
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// Check to see that we got a two bit wide wire.
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initial if ($bits(x) == 2) $display("PASSED");
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else $display("FAILED");
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endmodule
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