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// ============================================================================
//        __
//   \\__/ o\    (C) 2020  Robert Finch, Waterloo
//    \  __ /    All rights reserved.
//     \/_//     robfinch<remove>@finitron.ca
//       ||
//
//      DFPDecompose.sv
//
// BSD 3-Clause License
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// modification, are permitted provided that the following conditions are met:
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//                                                                          
// ============================================================================

module DFPDecompose(i, sgn, sx, exp, sig, xz, vz, inf, nan);
input [127:0] i;
output sgn;
output sx;
output [15:0] exp;
output [95:0] sig;
output xz;
output vz;
output inf;
output nan;

assign nan = i[127];
assign sgn = i[126];
assign inf = i[125];
assign sx = i[124];
assign exp = i[123:108];
assign sig = i[107:0];
assign xz = ~|exp;
assign vz = ~|{exp,sig};

endmodule


module DFPDecomposeReg(clk, ce, i, sgn, sx, exp, sig, xz, vz, inf, nan);
input clk;
input ce;
input [127:0] i;
output reg sgn;
output reg sx;
output reg [15:0] exp;
output reg [107:0] sig;
output reg xz;
output reg vz;
output reg inf;
output reg nan;

always @(posedge clk)
        if (ce) begin
                nan <= i[127];
                sgn <= i[126];
                inf <= i[125];
                sx <= i[124];
                exp <= i[123:108];
                sig <= i[107:0];
                xz <= ~|exp;
                vz <= ~|{exp,sig};
        end

endmodule