47 lines
1.4 KiB
Systemverilog
47 lines
1.4 KiB
Systemverilog
// DESCRIPTION: Verilator: Localparam with package function call using computed interface param
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//
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// This program is free software; you can redistribute it and/or modify it
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// under the terms of either the GNU Lesser General Public License Version 3
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// or the Perl Artistic License Version 2.0.
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// SPDX-FileCopyrightText: 2026 Wilson Snyder
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// SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
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// verilog_format: off
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`define stop $stop
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`define checkd(gotv,expv) do if ((gotv) !== (expv)) begin $write("%%Error: %s:%0d: got=%0d exp=%0d (%s !== %s)\n", `__FILE__,`__LINE__, (gotv), (expv), `"gotv`", `"expv`"); `stop; end while(0);
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// verilog_format: on
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package pkg;
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function automatic bit fn(int value);
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return (value > 0) ? 1'b1 : 1'b0;
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endfunction
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endpackage
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interface ifc #(
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parameter int WIDTH = 8
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);
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localparam int DEPTH = $clog2(WIDTH);
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localparam int COMPUTED = DEPTH * 2;
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endinterface
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module mod (
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ifc i
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);
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// LPARAM references i.COMPUTED which depends on i.DEPTH which depends on WIDTH
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localparam bit lpbit = pkg::fn(i.COMPUTED);
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localparam int lpval = i.COMPUTED + 1;
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endmodule
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module t;
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ifc #(.WIDTH(64)) i ();
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mod m (.i);
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initial begin
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// DEPTH = $clog2(64) = 6, COMPUTED = 6*2 = 12
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`checkd(m.lpbit, 1'b1); // fn(12) returns 1 since 12 > 0
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`checkd(m.lpval, 13); // lpval = 12 + 1 = 13
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$write("*-* All Finished *-*\n");
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$finish;
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end
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endmodule
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