// unsigned_mult.v
// Performs unsigned multiplication on the inputs a and b
module unsigned_mult (out, a, b);
	output 	[21:0]	out;  // 5-bit integer, 17-bit fraction
	input 	[21:0] 	a;	// 22-bit integer
	input 	[21:0] 	b;    // 22-bit fraction shifted right by 15
	
	wire	[21:0]	out;	
	wire 	[43:0]	mult_out;   // Multiplication result will be 44-bits

	// 7-bit integer, 37-bit fraction
	assign mult_out = a * b; 	// Perform multiplication
	assign out = mult_out[41:20]; // Output useful bits
	
endmodule

// signed_mult.v
// Performs signed multiplication on the inputs a and b
module fixed_mult (out, a, b);
	output  	[21:0]	out;	// 6-bit integer, 16-bit fraction
	input signed[16:0] 	a;	// 2-bit integer, 15-bit fraction
	input signed[22:0] 	b;	// 6-bit integer, 17-bit fraction
	wire	signed[21:0]	out;	// 6-bit integer, 16-bit fraction
	wire 	signed[39:0]	mult_out; // 40-bit result
	
	// Multiply results in 8-bit signed integer, 32-bit fraction
	assign mult_out = a * b;
	assign out = {mult_out[39], mult_out[36:16]};

endmodule