signed division

Hi all,

I design a piece of hardware using simple division as shown in below:

module divider (in1, in2, division, multiply);

//parameter

parameter DATA_WIDTH = 32;

//Input

input [DATA_WIDTH-1:0] in1;

input [DATA_WIDTH-1:0] in2;

//Output

output [DATA_WIDTH-1:0] division;

output [DATA_WIDTH-1:0] multiply;

assign division = (in1/in2);

assign multiply = in1*in2;

endmodule

It works fine with positive number, however when I try with

in1=-2352,

in2=-588,

by right, (-2352/-588) = 2, i should get 2. But the simulation result gives me 0 instead.

Besides, when I try with one of the input is positive number,

in1=2352,

in2=-588,

by right, (2352/-588) = -2, i should get -2. But the simulation result gives me 0 instead.

What is going wrong and how to overcome this problem?

thanks in advance,

regards,

ty6