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fdivsqrt cleanup

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This commit is contained in:
David Harris 2023-11-10 16:42:32 -08:00
parent c5b12b7331
commit 03864642a7
2 changed files with 2 additions and 2 deletions
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2
src/fpu/fdivsqrt/fdivsqrtpostproc.sv
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@ -118,7 +118,7 @@ module fdivsqrtpostproc import cvw::*; #(parameter cvw_t P) (
if (BZeroM) begin // Divide by zero
if (RemOpM) IntDivResultM = AM;
else IntDivResultM = {(P.XLEN){1'b1}};
end else if (ALTBM) begin // Numerator is zero
end else if (ALTBM) begin // Numerator is small
if (RemOpM) IntDivResultM = AM;
else IntDivResultM = '0;
end else IntDivResultM = PreIntResultM[P.XLEN-1:0];

2
src/fpu/fdivsqrt/fdivsqrtpreproc.sv
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@ -198,7 +198,7 @@ module fdivsqrtpreproc import cvw::*; #(parameter cvw_t P) (
/* verilator lint_off WIDTH */
assign IntDivNormShiftE = P.DIVb - (CyclesE * P.RK - P.LOGR); // b - rn, used for integer normalization right shift. rn = Cycles * r * k - r ***explain
assign IntRemNormShiftE = mE + (P.DIVb+1-P.XLEN); // m + b - (N-1) for remainder normalization shift
assign IntRemNormShiftE = mE + (P.DIVb-(P.XLEN-1)); // m + b - (N-1) for remainder normalization shift
/* verilator lint_on WIDTH */
assign RemOpE = Funct3E[1];
mux2 #(P.DIVBLEN+1) normshiftmux(IntDivNormShiftE, IntRemNormShiftE, RemOpE, IntNormShiftE);