EvoApproxLib^LITE

/***
* This code is a part of EvoApproxLib library (ehw.fit.vutbr.cz/approxlib) distributed under The MIT License.
* When used, please cite the following article(s): V. Mrazek, Z. Vasicek, L. Sekanina, H. Jiang and J. Han, "Scalable Construction of Approximate Multipliers With Formally Guaranteed Worst Case Error" in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 26, no. 11, pp. 2572-2576, Nov. 2018. doi: 10.1109/TVLSI.2018.2856362 
* This file contains a circuit from a sub-set of pareto optimal circuits with respect to the pwr and mae parameters
***/
// MAE% = 0.073 %
// MAE = 12288 
// WCE% = 0.29 %
// WCE = 49153 
// WCRE% = 100.00 %
// EP% = 99.84 %
// MRE% = 1.67 %
// MSE = 18304.091e4 
// PDK45_PWR = 0.511 mW
// PDK45_AREA = 768.7 um2
// PDK45_DELAY = 2.23 ns


module mul12u_2DA ( A, B, O );
  input [11:0] A;
  input [11:0] B;
  output [23:0] O;

  wire C_10_10,C_10_2,C_10_3,C_10_4,C_10_5,C_10_6,C_10_7,C_10_8,C_10_9,C_11_1,C_11_10,C_11_2,C_11_3,C_11_4,C_11_5,C_11_6,C_11_7,C_11_8,C_11_9,C_12_1,C_12_10,C_12_2,C_12_3,C_12_4,C_12_5,C_12_6,C_12_7,C_12_8,C_12_9,C_3_10,C_3_9,C_4_10,C_4_8,C_4_9,C_5_10,C_5_7,C_5_8,C_5_9,C_6_10,C_6_6,C_6_7,C_6_8,C_6_9,C_7_10,C_7_5,C_7_6,C_7_7,C_7_8,C_7_9,C_8_10,C_8_4,C_8_5,C_8_6,C_8_7,C_8_8,C_8_9,C_9_10,C_9_3,C_9_4,C_9_5,C_9_6,C_9_7,C_9_8,C_9_9,S_10_10,S_10_11,S_10_2,S_10_3,S_10_4,S_10_5,S_10_6,S_10_7,S_10_8,S_10_9,S_11_1,S_11_10,S_11_11,S_11_2,S_11_3,S_11_4,S_11_5,S_11_6,S_11_7,S_11_8,S_11_9,S_12_0,S_12_1,S_12_10,S_12_11,S_12_2,S_12_3,S_12_4,S_12_5,S_12_6,S_12_7,S_12_8,S_12_9,S_2_10,S_2_11,S_3_10,S_3_11,S_3_9,S_4_10,S_4_11,S_4_8,S_4_9,S_5_10,S_5_11,S_5_7,S_5_8,S_5_9,S_6_10,S_6_11,S_6_6,S_6_7,S_6_8,S_6_9,S_7_10,S_7_11,S_7_5,S_7_6,S_7_7,S_7_8,S_7_9,S_8_10,S_8_11,S_8_4,S_8_5,S_8_6,S_8_7,S_8_8,S_8_9,S_9_10,S_9_11,S_9_3,S_9_4,S_9_5,S_9_6,S_9_7,S_9_8,S_9_9;

  assign S_2_10 = (A[2] & B[10]);
  assign S_2_11 = (A[2] & B[11]);
  PDKGENHAX1 U28678 (.A(S_2_10), .B((A[3] & B[9])), .YS(S_3_9), .YC(C_3_9));
  PDKGENHAX1 U28679 (.A(S_2_11), .B((A[3] & B[10])), .YS(S_3_10), .YC(C_3_10));
  assign S_3_11 = (A[3] & B[11]);
  PDKGENHAX1 U28689 (.A(S_3_9), .B((A[4] & B[8])), .YS(S_4_8), .YC(C_4_8));
  PDKGENFAX1 U28690 (.A(S_3_10), .B(C_3_9), .C((A[4] & B[9])), .YS(S_4_9), .YC(C_4_9));
  PDKGENFAX1 U28691 (.A(S_3_11), .B(C_3_10), .C((A[4] & B[10])), .YS(S_4_10), .YC(C_4_10));
  assign S_4_11 = (A[4] & B[11]);
  PDKGENHAX1 U28700 (.A(S_4_8), .B((A[5] & B[7])), .YS(S_5_7), .YC(C_5_7));
  PDKGENFAX1 U28701 (.A(S_4_9), .B(C_4_8), .C((A[5] & B[8])), .YS(S_5_8), .YC(C_5_8));
  PDKGENFAX1 U28702 (.A(S_4_10), .B(C_4_9), .C((A[5] & B[9])), .YS(S_5_9), .YC(C_5_9));
  PDKGENFAX1 U28703 (.A(S_4_11), .B(C_4_10), .C((A[5] & B[10])), .YS(S_5_10), .YC(C_5_10));
  assign S_5_11 = (A[5] & B[11]);
  PDKGENHAX1 U28711 (.A(S_5_7), .B((A[6] & B[6])), .YS(S_6_6), .YC(C_6_6));
  PDKGENFAX1 U28712 (.A(S_5_8), .B(C_5_7), .C((A[6] & B[7])), .YS(S_6_7), .YC(C_6_7));
  PDKGENFAX1 U28713 (.A(S_5_9), .B(C_5_8), .C((A[6] & B[8])), .YS(S_6_8), .YC(C_6_8));
  PDKGENFAX1 U28714 (.A(S_5_10), .B(C_5_9), .C((A[6] & B[9])), .YS(S_6_9), .YC(C_6_9));
  PDKGENFAX1 U28715 (.A(S_5_11), .B(C_5_10), .C((A[6] & B[10])), .YS(S_6_10), .YC(C_6_10));
  assign S_6_11 = (A[6] & B[11]);
  PDKGENHAX1 U28722 (.A(S_6_6), .B((A[7] & B[5])), .YS(S_7_5), .YC(C_7_5));
  PDKGENFAX1 U28723 (.A(S_6_7), .B(C_6_6), .C((A[7] & B[6])), .YS(S_7_6), .YC(C_7_6));
  PDKGENFAX1 U28724 (.A(S_6_8), .B(C_6_7), .C((A[7] & B[7])), .YS(S_7_7), .YC(C_7_7));
  PDKGENFAX1 U28725 (.A(S_6_9), .B(C_6_8), .C((A[7] & B[8])), .YS(S_7_8), .YC(C_7_8));
  PDKGENFAX1 U28726 (.A(S_6_10), .B(C_6_9), .C((A[7] & B[9])), .YS(S_7_9), .YC(C_7_9));
  PDKGENFAX1 U28727 (.A(S_6_11), .B(C_6_10), .C((A[7] & B[10])), .YS(S_7_10), .YC(C_7_10));
  assign S_7_11 = (A[7] & B[11]);
  PDKGENHAX1 U28733 (.A(S_7_5), .B((A[8] & B[4])), .YS(S_8_4), .YC(C_8_4));
  PDKGENFAX1 U28734 (.A(S_7_6), .B(C_7_5), .C((A[8] & B[5])), .YS(S_8_5), .YC(C_8_5));
  PDKGENFAX1 U28735 (.A(S_7_7), .B(C_7_6), .C((A[8] & B[6])), .YS(S_8_6), .YC(C_8_6));
  PDKGENFAX1 U28736 (.A(S_7_8), .B(C_7_7), .C((A[8] & B[7])), .YS(S_8_7), .YC(C_8_7));
  PDKGENFAX1 U28737 (.A(S_7_9), .B(C_7_8), .C((A[8] & B[8])), .YS(S_8_8), .YC(C_8_8));
  PDKGENFAX1 U28738 (.A(S_7_10), .B(C_7_9), .C((A[8] & B[9])), .YS(S_8_9), .YC(C_8_9));
  PDKGENFAX1 U28739 (.A(S_7_11), .B(C_7_10), .C((A[8] & B[10])), .YS(S_8_10), .YC(C_8_10));
  assign S_8_11 = (A[8] & B[11]);
  PDKGENHAX1 U28744 (.A(S_8_4), .B((A[9] & B[3])), .YS(S_9_3), .YC(C_9_3));
  PDKGENFAX1 U28745 (.A(S_8_5), .B(C_8_4), .C((A[9] & B[4])), .YS(S_9_4), .YC(C_9_4));
  PDKGENFAX1 U28746 (.A(S_8_6), .B(C_8_5), .C((A[9] & B[5])), .YS(S_9_5), .YC(C_9_5));
  PDKGENFAX1 U28747 (.A(S_8_7), .B(C_8_6), .C((A[9] & B[6])), .YS(S_9_6), .YC(C_9_6));
  PDKGENFAX1 U28748 (.A(S_8_8), .B(C_8_7), .C((A[9] & B[7])), .YS(S_9_7), .YC(C_9_7));
  PDKGENFAX1 U28749 (.A(S_8_9), .B(C_8_8), .C((A[9] & B[8])), .YS(S_9_8), .YC(C_9_8));
  PDKGENFAX1 U28750 (.A(S_8_10), .B(C_8_9), .C((A[9] & B[9])), .YS(S_9_9), .YC(C_9_9));
  PDKGENFAX1 U28751 (.A(S_8_11), .B(C_8_10), .C((A[9] & B[10])), .YS(S_9_10), .YC(C_9_10));
  assign S_9_11 = (A[9] & B[11]);
  PDKGENHAX1 U28755 (.A(S_9_3), .B((A[10] & B[2])), .YS(S_10_2), .YC(C_10_2));
  PDKGENFAX1 U28756 (.A(S_9_4), .B(C_9_3), .C((A[10] & B[3])), .YS(S_10_3), .YC(C_10_3));
  PDKGENFAX1 U28757 (.A(S_9_5), .B(C_9_4), .C((A[10] & B[4])), .YS(S_10_4), .YC(C_10_4));
  PDKGENFAX1 U28758 (.A(S_9_6), .B(C_9_5), .C((A[10] & B[5])), .YS(S_10_5), .YC(C_10_5));
  PDKGENFAX1 U28759 (.A(S_9_7), .B(C_9_6), .C((A[10] & B[6])), .YS(S_10_6), .YC(C_10_6));
  PDKGENFAX1 U28760 (.A(S_9_8), .B(C_9_7), .C((A[10] & B[7])), .YS(S_10_7), .YC(C_10_7));
  PDKGENFAX1 U28761 (.A(S_9_9), .B(C_9_8), .C((A[10] & B[8])), .YS(S_10_8), .YC(C_10_8));
  PDKGENFAX1 U28762 (.A(S_9_10), .B(C_9_9), .C((A[10] & B[9])), .YS(S_10_9), .YC(C_10_9));
  PDKGENFAX1 U28763 (.A(S_9_11), .B(C_9_10), .C((A[10] & B[10])), .YS(S_10_10), .YC(C_10_10));
  assign S_10_11 = (A[10] & B[11]);
  PDKGENHAX1 U28766 (.A(S_10_2), .B((A[11] & B[1])), .YS(S_11_1), .YC(C_11_1));
  PDKGENFAX1 U28767 (.A(S_10_3), .B(C_10_2), .C((A[11] & B[2])), .YS(S_11_2), .YC(C_11_2));
  PDKGENFAX1 U28768 (.A(S_10_4), .B(C_10_3), .C((A[11] & B[3])), .YS(S_11_3), .YC(C_11_3));
  PDKGENFAX1 U28769 (.A(S_10_5), .B(C_10_4), .C((A[11] & B[4])), .YS(S_11_4), .YC(C_11_4));
  PDKGENFAX1 U28770 (.A(S_10_6), .B(C_10_5), .C((A[11] & B[5])), .YS(S_11_5), .YC(C_11_5));
  PDKGENFAX1 U28771 (.A(S_10_7), .B(C_10_6), .C((A[11] & B[6])), .YS(S_11_6), .YC(C_11_6));
  PDKGENFAX1 U28772 (.A(S_10_8), .B(C_10_7), .C((A[11] & B[7])), .YS(S_11_7), .YC(C_11_7));
  PDKGENFAX1 U28773 (.A(S_10_9), .B(C_10_8), .C((A[11] & B[8])), .YS(S_11_8), .YC(C_11_8));
  PDKGENFAX1 U28774 (.A(S_10_10), .B(C_10_9), .C((A[11] & B[9])), .YS(S_11_9), .YC(C_11_9));
  PDKGENFAX1 U28775 (.A(S_10_11), .B(C_10_10), .C((A[11] & B[10])), .YS(S_11_10), .YC(C_11_10));
  assign S_11_11 = (A[11] & B[11]);
  assign S_12_0 = S_11_1;
  PDKGENHAX1 U28778 (.A(S_11_2), .B(C_11_1), .YS(S_12_1), .YC(C_12_1));
  PDKGENFAX1 U28779 (.A(S_11_3), .B(C_12_1), .C(C_11_2), .YS(S_12_2), .YC(C_12_2));
  PDKGENFAX1 U28780 (.A(S_11_4), .B(C_12_2), .C(C_11_3), .YS(S_12_3), .YC(C_12_3));
  PDKGENFAX1 U28781 (.A(S_11_5), .B(C_12_3), .C(C_11_4), .YS(S_12_4), .YC(C_12_4));
  PDKGENFAX1 U28782 (.A(S_11_6), .B(C_12_4), .C(C_11_5), .YS(S_12_5), .YC(C_12_5));
  PDKGENFAX1 U28783 (.A(S_11_7), .B(C_12_5), .C(C_11_6), .YS(S_12_6), .YC(C_12_6));
  PDKGENFAX1 U28784 (.A(S_11_8), .B(C_12_6), .C(C_11_7), .YS(S_12_7), .YC(C_12_7));
  PDKGENFAX1 U28785 (.A(S_11_9), .B(C_12_7), .C(C_11_8), .YS(S_12_8), .YC(C_12_8));
  PDKGENFAX1 U28786 (.A(S_11_10), .B(C_12_8), .C(C_11_9), .YS(S_12_9), .YC(C_12_9));
  PDKGENFAX1 U28787 (.A(S_11_11), .B(C_12_9), .C(C_11_10), .YS(S_12_10), .YC(C_12_10));
  assign S_12_11 = C_12_10;
  assign O = {S_12_11,S_12_10,S_12_9,S_12_8,S_12_7,S_12_6,S_12_5,S_12_4,S_12_3,S_12_2,S_12_1,S_12_0,1'b0,1'b0,1'b0,1'b0,1'b0,1'b0,1'b0,1'b0,1'b0,1'b0,1'b0,1'b0};

endmodule

/* mod */
module PDKGENHAX1( input A, input B, output YS, output YC );
    assign YS = A ^ B;
    assign YC = A & B;
endmodule
/* mod */
module PDKGENFAX1( input A, input B, input C, output YS, output YC );
    assign YS = (A ^ B) ^ C;
    assign YC = (A & B) | (B & C) | (A & C);
endmodule