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module forloops01 (input clk, a, b, output reg [3:0] p, q, x, y);
integer k;
always @(posedge clk) begin
for (k=0; k<2; k=k+1)
p[2*k +: 2] = {a, b} ^ {2{k}};
x <= k + {a, b};
end
always @* begin
for (k=0; k<4; k=k+1)
q[k] = {~a, ~b, a, b} >> k[1:0];
y = k - {a, b};
end
endmodule
module forloops02 (input clk, a, b, output reg [3:0] q, x, output [3:0] y);
integer k;
always @* begin
for (k=0; k<4; k=k+1)
q[k] = {~a, ~b, a, b} >> k[1:0];
end
always @* begin
x = k + {a, b};
end
assign y = k - {a, b};
endmodule
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