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Fixed formatting

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Harshini Srinath 2023-07-30 18:27:22 -07:00 committed by GitHub
parent 7e237858a0
commit acbbe7941a
1 changed files with 68 additions and 83 deletions
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15
src/fpu/postproc/round.sv
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@ -108,7 +108,6 @@ module round import cvw::*; #(parameter cvw_t P) (
// 11 - do nothing if a small number was supposed to subtracted (the sticky bit was set by the small number) // 11 - do nothing if a small number was supposed to subtracted (the sticky bit was set by the small number)
// - Plus 1 otherwise // - Plus 1 otherwise
// determine what format the final result is in: int or fp // determine what format the final result is in: int or fp
assign IntRes = ToInt; assign IntRes = ToInt;
assign FpRes = ~IntRes; assign FpRes = ~IntRes;
@ -179,15 +178,10 @@ module round import cvw::*; #(parameter cvw_t P) (
end end
// only add the Addend sticky if doing an FMA opperation // only add the Addend sticky if doing an FMA opperation
// - the shifter shifts too far left when there's an underflow (shifting out all possible sticky bits) // - the shifter shifts too far left when there's an underflow (shifting out all possible sticky bits)
assign Sticky = FmaASticky&FmaOp | NormSticky | CvtResUf&CvtOp | FmaMe[P.NE+1]&FmaOp | DivSticky&DivOp; assign Sticky = FmaASticky&FmaOp | NormSticky | CvtResUf&CvtOp | FmaMe[P.NE+1]&FmaOp | DivSticky&DivOp;
// determine round and LSB of the rounded value // determine round and LSB of the rounded value
// - underflow round bit is used to determint the underflow flag // - underflow round bit is used to determint the underflow flag
if (P.FPSIZES == 1) begin if (P.FPSIZES == 1) begin
@ -254,7 +248,6 @@ module round import cvw::*; #(parameter cvw_t P) (
assign LsbRes = ToInt&CvtOp ? Mf[P.CORRSHIFTSZ-P.XLEN] : FpLsbRes; assign LsbRes = ToInt&CvtOp ? Mf[P.CORRSHIFTSZ-P.XLEN] : FpLsbRes;
assign Round = ToInt&CvtOp ? Mf[P.CORRSHIFTSZ-P.XLEN-2] : FpRound; assign Round = ToInt&CvtOp ? Mf[P.CORRSHIFTSZ-P.XLEN-2] : FpRound;
always_comb begin always_comb begin
// Determine if you add 1 // Determine if you add 1
case (Frm) case (Frm)
@ -282,9 +275,6 @@ module round import cvw::*; #(parameter cvw_t P) (
assign FpPlus1 = Plus1&~(ToInt&CvtOp); assign FpPlus1 = Plus1&~(ToInt&CvtOp);
assign UfPlus1 = UfCalcPlus1 & (Sticky|Round); assign UfPlus1 = UfCalcPlus1 & (Sticky|Round);
// place Plus1 into the proper position for the format // place Plus1 into the proper position for the format
if (P.FPSIZES == 1) begin if (P.FPSIZES == 1) begin
assign RoundAdd = {{P.FLEN{1'b0}}, FpPlus1}; assign RoundAdd = {{P.FLEN{1'b0}}, FpPlus1};
@ -302,13 +292,9 @@ module round import cvw::*; #(parameter cvw_t P) (
end else if (P.FPSIZES == 4) end else if (P.FPSIZES == 4)
assign RoundAdd = {(P.Q_NE+1+P.H_NF)'(0), FpPlus1&(OutFmt==P.H_FMT), (P.S_NF-P.H_NF-1)'(0), FpPlus1&(OutFmt==P.S_FMT), (P.D_NF-P.S_NF-1)'(0), FpPlus1&(OutFmt==P.D_FMT), (P.Q_NF-P.D_NF-1)'(0), FpPlus1&(OutFmt==P.Q_FMT)}; assign RoundAdd = {(P.Q_NE+1+P.H_NF)'(0), FpPlus1&(OutFmt==P.H_FMT), (P.S_NF-P.H_NF-1)'(0), FpPlus1&(OutFmt==P.S_FMT), (P.D_NF-P.S_NF-1)'(0), FpPlus1&(OutFmt==P.D_FMT), (P.Q_NF-P.D_NF-1)'(0), FpPlus1&(OutFmt==P.Q_FMT)};
// trim unneeded bits from fraction // trim unneeded bits from fraction
assign RoundFrac = Mf[P.CORRSHIFTSZ-1:P.CORRSHIFTSZ-P.NF]; assign RoundFrac = Mf[P.CORRSHIFTSZ-1:P.CORRSHIFTSZ-P.NF];
// select the exponent // select the exponent
always_comb always_comb
case(PostProcSel) case(PostProcSel)
@ -326,5 +312,4 @@ module round import cvw::*; #(parameter cvw_t P) (
assign {FullRe, Rf} = {Me, RoundFrac} + RoundAdd; assign {FullRe, Rf} = {Me, RoundFrac} + RoundAdd;
assign Re = FullRe[P.NE-1:0]; assign Re = FullRe[P.NE-1:0];
endmodule endmodule