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-rw-r--r--tests/simple/task_func.v36
1 files changed, 35 insertions, 1 deletions
diff --git a/tests/simple/task_func.v b/tests/simple/task_func.v
index 51e31015..9b8e26e5 100644
--- a/tests/simple/task_func.v
+++ b/tests/simple/task_func.v
@@ -33,8 +33,42 @@ end
endmodule
+// -------------------------------------------------------------------
-module task_func_test02( input [7:0] din_a, input [7:0] din_b, output [7:0] dout_a);
+module task_func_test02(clk, a, b, c, x, y, z, w);
+
+input clk;
+input [7:0] a, b, c;
+output reg [7:0] x, y, z, w;
+
+function [7:0] sum_shift(input [3:0] s1, s2, s3);
+sum_shift = s1 + (s2 << 2) + (s3 << 4);
+endfunction
+
+task reset_w;
+w = 0;
+endtask
+
+task add_to(output [7:0] out, input [7:0] in);
+out = out + in;
+endtask
+
+always @(posedge clk) begin
+ x = sum_shift(a, b, c);
+ y = sum_shift(a[7:4], b[5:2], c[3:0]);
+ z = sum_shift(a[0], b[5:4], c >> 5) ^ sum_shift(1, 2, 3);
+
+ reset_w;
+ add_to(w, x);
+ add_to(w, y);
+ add_to(w, z);
+end
+
+endmodule
+
+// -------------------------------------------------------------------
+
+module task_func_test03( input [7:0] din_a, input [7:0] din_b, output [7:0] dout_a);
assign dout_a = test(din_a,din_b);
function [7:0] test;
input [7:0] a;