text: /***
  * 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): PRABAKARAN B. S., MRAZEK V., VASICEK Z., SEKANINA L., SHAFIQUE M. ApproxFPGAs: Embracing ASIC-based Approximate Arithmetic Components for FPGA-Based Systems. DAC 2020. 
  ***/
  // MAE% = 4.34 %
  // MAE = 22 
  // WCE% = 14.26 %
  // WCE = 73 
  // WCRE% = 7300.00 %
  // EP% = 98.61 %
  // MRE% = 14.04 %
  // MSE = 744 
  // FPGA_POWER = 0.27
  // FPGA_DELAY = 6.1
  // FPGA_LUT = 2.0
  #include <stdint.h>
  #include <stdlib.h>
  
  uint64_t add8u_0BN(uint64_t a, uint64_t b) {
    int wa[8];
    int wb[8];
    uint64_t y = 0;
    wa[0] = (a >> 0) & 0x01;
    wb[0] = (b >> 0) & 0x01;
    wa[1] = (a >> 1) & 0x01;
    wb[1] = (b >> 1) & 0x01;
    wa[2] = (a >> 2) & 0x01;
    wb[2] = (b >> 2) & 0x01;
    wa[3] = (a >> 3) & 0x01;
    wb[3] = (b >> 3) & 0x01;
    wa[4] = (a >> 4) & 0x01;
    wb[4] = (b >> 4) & 0x01;
    wa[5] = (a >> 5) & 0x01;
    wb[5] = (b >> 5) & 0x01;
    wa[6] = (a >> 6) & 0x01;
    wb[6] = (b >> 6) & 0x01;
    wa[7] = (a >> 7) & 0x01;
    wb[7] = (b >> 7) & 0x01;
    int sig_17 = 0;
    int sig_34 = ~(wb[6] ^ wa[6]);
    int sig_37 = wa[0];
    int sig_44 = wa[0];
    int sig_46 = 0;
    int sig_47 = wa[6] | wb[6];
    int sig_48 = wa[7] ^ wb[7];
    int sig_49 = wa[7] & wb[7];
    int sig_50 = sig_48 & sig_47;
    int sig_51 = sig_48 ^ sig_47;
    int sig_52 = sig_49 | sig_50;
    y |=  (wb[1] & 0x01) << 0; // default output
    y |=  (sig_44 & 0x01) << 1; // default output
    y |=  (sig_46 & 0x01) << 2; // default output
    y |=  (sig_37 & 0x01) << 3; // default output
    y |=  (sig_17 & 0x01) << 4; // default output
    y |=  (sig_46 & 0x01) << 5; // default output
    y |=  (sig_34 & 0x01) << 6; // default output
    y |=  (sig_51 & 0x01) << 7; // default output
    y |=  (sig_52 & 0x01) << 8; // default output
     return y;
  }
  