fix_float_back_bus26.v

IEEE754 floating point sub

/* ------------------------------------------------------------
// MODULE: Float_Fix_Front_Bus26(no clock , two floating inputs alignment, for SM floating point)
// Edition: one
// Matlab Code:  None
// C Code: None
// Architecture Diagram: add_sub_floating.ppt
// Date: 2008/01/31
// Update: 2008/01/31	   
// ------------------------------------------------------------ */
`include "Twos_compl_to_IEEE.v"
`include "Float_Built_Bus26.v"


module Fix_float_Back_Bus26(sgnfc_in,exp_in,data_out);

/* ------------------------------------------------------------
// Parameters definition
// ------------------------------------------------------------ */

parameter in_data_lng=33,//data_in total length
	  in_sgnfc_lng=26,//data_in significant part length
	  out_sgnfc_lng=25,//data_out significant part length
	  in_exp_lng=7,//data_in(out) exponent part length
	  out_data_lng=32;//data_out total length
/* ------------------------------------------------------------
// I/O declaration
// ------------------------------------------------------------ */
input [in_sgnfc_lng-1:0] sgnfc_in; //sgnfc part

input [in_exp_lng-1:0] exp_in; //exp part

output [out_data_lng-1:0] data_out; // data_out
/* ------------------------------------------------------------
// Connection wire declaration
// ------------------------------------------------------------ */
wire [in_exp_lng-1:0] IEEE_data_exp;
wire [in_sgnfc_lng-1:0]IEEE_data_sgnfc;
wire [in_data_lng-1:0] IEEE_data;
wire [out_data_lng-1:0] data_out;
/* ------------------------------------------------------------
// Module instance
// ------------------------------------------------------------ */

Twos_compl_to_IEEE #(in_data_lng,in_exp_lng,in_sgnfc_lng) ti0
(.data_in({sgnfc_in,exp_in}),.data_out(IEEE_data));

assign IEEE_data_sgnfc=IEEE_data[in_data_lng-1:in_exp_lng];

assign IEEE_data_exp=IEEE_data[in_exp_lng-1:0];

Float_Built_Bus26 #(in_sgnfc_lng,out_sgnfc_lng,in_exp_lng,out_data_lng) f0 
(.data_sgnfc_in(IEEE_data_sgnfc),.data_exp_in(IEEE_data_exp),.data_out(data_out));

endmodule