URL
https://opencores.org/ocsvn/ft816float/ft816float/trunk
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| Rev 57 |
Rev 75 |
| Line 42... |
Line 42... |
output DFP128 o;
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output DFP128 o;
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wire [109:0] enc_sig;
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wire [109:0] enc_sig;
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DPDEncodeN #(.N(11)) u1 (i.sig[131:0], enc_sig);
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DPDEncodeN #(.N(11)) u1 (i.sig[131:0], enc_sig);
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always @*
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always_comb
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begin
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begin
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// sign
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// sign
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o.sign <= i.sign;
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o.sign <= i.sign;
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// combo
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// combo
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if (i.qnan|i.snan)
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if (i.qnan|i.snan)
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| Line 66... |
Line 66... |
o.sigc <= enc_sig;
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o.sigc <= enc_sig;
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end
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end
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endmodule
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endmodule
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module DFPPack96(i, o);
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input DFP96U i;
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output DFP96 o;
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wire [79:0] enc_sig;
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DPDEncodeN #(.N(8)) u1 (i.sig[95:0], enc_sig);
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always_comb
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begin
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// sign
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o.sign <= i.sign;
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// combo
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if (i.qnan|i.snan)
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o.combo <= 5'b11111;
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else if (i.infinity)
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o.combo <= 5'b11110;
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else
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o.combo <= i.sig[99:96] > 4'h7 ? {2'b11,i.exp[11:10],i.sig[96]} : {i.exp[11:10],i.sig[98:96]};
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// exponent continuation
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if (i.qnan)
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o.expc <= {1'b0,i.exp[8:0]};
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else if (i.snan)
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o.expc <= {1'b1,i.exp[8:0]};
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else
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o.expc <= i.exp[9:0];
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// significand continuation
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o.sigc <= enc_sig;
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end
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endmodule
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module DFPPack64(i, o);
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module DFPPack64(i, o);
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input DFP64U i;
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input DFP64U i;
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output DFP64 o;
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output DFP64 o;
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wire [49:0] enc_sig;
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wire [49:0] enc_sig;
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DPDEncodeN #(.N(5)) u1 (i.sig[59:0], enc_sig);
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DPDEncodeN #(.N(5)) u1 (i.sig[59:0], enc_sig);
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always @*
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always_comb
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begin
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begin
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// sign
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// sign
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o.sign <= i.sign;
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o.sign <= i.sign;
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// combo
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// combo
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if (i.qnan|i.snan)
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if (i.qnan|i.snan)
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