How do you plan to solve it?
module minmax4_task (
input [7:0] v0,
input [7:0] v1,
input [7:0] v2,
input [7:0] v3,
output reg [7:0] min_val,
output reg [7:0] max_val
);
// --------- Provided task (complete the TODOs) ----------
// Returns both min and max among four 8-bit unsigned inputs.
task minmax4;
input [7:0] a, b, c, d;
output [7:0] min_o;
output [7:0] max_o;
reg [7:0] min01, max01;
reg [7:0] min23, max23;
begin
// Pairwise compare (a,b)
// TODO: set max01 as the larger of a and b
max01 = (a>b)? a:b;
// TODO: set min01 as the smaller of a and b
min01 = (a<b)? a:b;
// Pairwise compare (c,d)
// TODO: set max23 as the larger of c and d
max23 = (c>d)?c:d;
// TODO: set min23 as the smaller of c and d
min23 = (c<d)?c:d;
// Final reduce across pairs
// TODO: set max_o as the larger of max01 and max23
max_o = (max01>max23) ? max01 : max23;
// TODO: set min_o as the smaller of min01 and min23
min_o = (min01<min23) ? min01 : min23;
end
endtask
// -------------------------------------------------------
// TODO: Call the task and assign outputs
reg [7:0] tmin, tmax;
always @* begin
minmax4(v0,v1,v2,v3,tmin,tmax);
min_val = tmin;
max_val = tmax;
end
endmodule