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// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2009 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0
package testpackage;
localparam PARAM = 1024 >> 3;
endpackage
import testpackage::*;
module t;
localparam P4 = f_add(P3,1);
localparam P8 = f_add2(P3,P3,f_add(1,1));
localparam P5 = f_while(7);
localparam P16 = f_for(P4);
localparam P18 = f_case(P4);
localparam P6 = f_return(P4);
localparam P3 = 3;
localparam P128 = f_package();
localparam [15:0] PSEL = f_concat_sel(16'h4321);
typedef struct packed {
logic [7:0] data;
} type_t;
typedef type_t [1:0] flist;
localparam flist PLIST = {8'd4,8'd8};
localparam flist PARR = f_list_swap_2(PLIST);
typedef struct packed {
logic first;
logic second;
logic [31:0] data;
} bigstruct_t;
localparam bigstruct_t bigparam = f_return_struct(1'b1, 1'b0, 32'hfff12fff);
initial begin
`ifdef TEST_VERBOSE
$display("P5=%0d P8=%0d P16=%0d P18=%0d",P5,P8,P16,P18);
`endif
if (P3 !== 3) $stop;
if (P4 !== 4) $stop;
if (P5 !== 5) $stop;
if (P6 !== 6) $stop;
if (P8 !== 8) $stop;
if (P16 !== 16) $stop;
if (P18 !== 18) $stop;
if (PARR[0] != PLIST[1]) $stop;
if (PARR[1] != PLIST[0]) $stop;
if (bigparam.first != 1'b1) $stop;
if (bigparam.second != 1'b0) $stop;
if (bigparam.data != 32'hfff12fff) $stop;
if (P128 != 128) $stop;
if (PSEL != 16'h1234) $stop;
$write("*-* All Finished *-*\n");
$finish;
end
function integer f_package();
return PARAM;
endfunction
function integer f_add(input [31:0] a, input [31:0] b);
f_add = a+b;
endfunction
// Speced ok: function called from function
function integer f_add2(input [31:0] a, input [31:0] b, input [31:0] c);
f_add2 = f_add(a,b)+c;
endfunction
// Speced ok: local variables
function integer f_for(input [31:0] a);
integer i;
integer times;
begin
times = 1;
for (i=0; i<a; i=i+1) times = times*2;
f_for = times;
end
endfunction
function integer f_while(input [31:0] a);
integer i;
begin
i=0;
begin : named
f_while = 1;
end : named
while (i<=a) begin
if (i[0]) f_while = f_while + 1;
i = i + 1;
end
end
endfunction
// Speced ok: local variables
function integer f_case(input [31:0] a);
case(a)
32'd1: f_case = 1;
32'd0, 32'd4: f_case = 18;
32'd1234: begin $display("never get here"); $stop; end
default: f_case = 99;
endcase
endfunction
function automatic integer f_return(input [31:0] a);
integer out = 2;
while (1) begin
out = out+1;
if (a>1) break;
end
while (1) begin
out = out+1;
if (a>1) return 2+out;
end
f_return = 0;
endfunction
function flist f_list_swap_2(input flist in_list);
f_list_swap_2[0].data = in_list[1].data;
f_list_swap_2[1].data = in_list[0].data;
endfunction
function bigstruct_t f_return_struct(input first, input second, input [31:0] data);
bigstruct_t result;
result.data = data;
result.first = first;
result.second = second;
return result;
endfunction
function [15:0] f_concat_sel(input [15:0] in);
reg [3:0] tmp1, tmp2, tmp3, tmp4;
{tmp4, tmp3, tmp2, tmp1} = in;
f_concat_sel = {tmp1, tmp2, tmp3, tmp4};
endfunction
endmodule
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