Subversion Repositories ft816float

`timescale 1ns / 1ps
// ============================================================================
//        __
//   \\__/ o\    (C) 2023  Robert Finch, Waterloo
//    \  __ /    All rights reserved.
//     \/_//     robfinch<remove>@finitron.ca
//       ||
//
//      fpCvt16To128.sv
//    - decimal floating convert half to quad
//
//
// BSD 3-Clause License
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// modification, are permitted provided that the following conditions are met:
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// ============================================================================

import fp16Pkg::*;
import fp128Pkg::*;

module fpCvt16To128(i, o);
input FP16 i;
output FP128 o;

wire [15:0] bias128 = 15'h3FFF;
wire [ 4:0] bias16 = 5'h0F;

always_comb
        o.sign = i.sign;
always_comb
        if (i.exp==5'h1F)       // Keep infinity / nan status
                o.exp = 15'h7FFF;
        else
                o.exp = bias128 - bias16 + i.exp;
always_comb
        o.sig = {i.sig,102'd0};

endmodule