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): V. Mrazek, R. Hrbacek, Z. Vasicek and L. Sekanina, "EvoApprox8b: Library of approximate adders and multipliers for circuit design and benchmarking of approximation methods". Design, Automation & Test in Europe Conference & Exhibition (DATE), 2017, Lausanne, 2017, pp. 258-261. doi: 10.23919/DATE.2017.7926993 
  * This file contains a circuit from evoapprox8b dataset. Note that a new version of library was already published.
  ***/
  #include <stdint.h>
  #include <stdlib.h>
  
  /// Approximate function mul8_464
  ///  Library = EvoApprox8b
  ///  Circuit = mul8_464
  ///  Area   (180) = 4816
  ///  Delay  (180) = 3.360
  ///  Power  (180) = 1971.00
  ///  Area   (45) = 352
  ///  Delay  (45) = 1.250
  ///  Power  (45) = 170.30
  ///  Nodes = 88
  ///  HD = 325114
  ///  MAE = 296.33359
  ///  MSE = 146533.40601
  ///  MRE = 6.10 %
  ///  WCE = 1960
  ///  WCRE = 100 %
  ///  EP = 98.1 %
  uint16_t mul8_464(uint8_t a, uint8_t b)
  {
    uint16_t c = 0;
    uint8_t n0 = (a >> 0) & 0x1;
    uint8_t n2 = (a >> 1) & 0x1;
    uint8_t n4 = (a >> 2) & 0x1;
    uint8_t n6 = (a >> 3) & 0x1;
    uint8_t n8 = (a >> 4) & 0x1;
    uint8_t n10 = (a >> 5) & 0x1;
    uint8_t n12 = (a >> 6) & 0x1;
    uint8_t n14 = (a >> 7) & 0x1;
    uint8_t n16 = (b >> 0) & 0x1;
    uint8_t n18 = (b >> 1) & 0x1;
    uint8_t n20 = (b >> 2) & 0x1;
    uint8_t n22 = (b >> 3) & 0x1;
    uint8_t n24 = (b >> 4) & 0x1;
    uint8_t n26 = (b >> 5) & 0x1;
    uint8_t n28 = (b >> 6) & 0x1;
    uint8_t n30 = (b >> 7) & 0x1;
    uint8_t n32;
    uint8_t n33;
    uint8_t n35;
    uint8_t n38;
    uint8_t n41;
    uint8_t n47;
    uint8_t n51;
    uint8_t n62;
    uint8_t n63;
    uint8_t n65;
    uint8_t n89;
    uint8_t n93;
    uint8_t n99;
    uint8_t n117;
    uint8_t n145;
    uint8_t n171;
    uint8_t n173;
    uint8_t n398;
    uint8_t n399;
    uint8_t n414;
    uint8_t n415;
    uint8_t n427;
    uint8_t n430;
    uint8_t n514;
    uint8_t n532;
    uint8_t n548;
    uint8_t n598;
    uint8_t n648;
    uint8_t n664;
    uint8_t n682;
    uint8_t n683;
    uint8_t n749;
    uint8_t n764;
    uint8_t n782;
    uint8_t n798;
    uint8_t n814;
    uint8_t n898;
    uint8_t n914;
    uint8_t n932;
    uint8_t n933;
    uint8_t n948;
    uint8_t n949;
    uint8_t n1014;
    uint8_t n1032;
    uint8_t n1048;
    uint8_t n1049;
    uint8_t n1064;
    uint8_t n1082;
    uint8_t n1148;
    uint8_t n1164;
    uint8_t n1165;
    uint8_t n1182;
    uint8_t n1183;
    uint8_t n1198;
    uint8_t n1199;
    uint8_t n1214;
    uint8_t n1215;
    uint8_t n1264;
    uint8_t n1282;
    uint8_t n1298;
    uint8_t n1314;
    uint8_t n1321;
    uint8_t n1332;
    uint8_t n1348;
    uint8_t n1364;
    uint8_t n1399;
    uint8_t n1414;
    uint8_t n1415;
    uint8_t n1432;
    uint8_t n1433;
    uint8_t n1448;
    uint8_t n1449;
    uint8_t n1464;
    uint8_t n1465;
    uint8_t n1482;
    uint8_t n1483;
    uint8_t n1532;
    uint8_t n1548;
    uint8_t n1564;
    uint8_t n1582;
    uint8_t n1598;
    uint8_t n1614;
    uint8_t n1632;
    uint8_t n1664;
    uint8_t n1665;
    uint8_t n1682;
    uint8_t n1683;
    uint8_t n1698;
    uint8_t n1699;
    uint8_t n1714;
    uint8_t n1715;
    uint8_t n1732;
    uint8_t n1733;
    uint8_t n1748;
    uint8_t n1749;
    uint8_t n1764;
    uint8_t n1782;
    uint8_t n1798;
    uint8_t n1814;
    uint8_t n1832;
    uint8_t n1848;
    uint8_t n1864;
    uint8_t n1882;
    uint8_t n1898;
    uint8_t n1914;
    uint8_t n1915;
    uint8_t n1932;
    uint8_t n1933;
    uint8_t n1948;
    uint8_t n1949;
    uint8_t n1964;
    uint8_t n1965;
    uint8_t n1982;
    uint8_t n1983;
    uint8_t n1998;
    uint8_t n1999;
    uint8_t n2014;
    uint8_t n2015;
  
    n32 = n18 & n14;
    n33 = n18 & n14;
    n35 = ~(n16 & n32 & n18);
    n38 = ~(n6 | n0 | n14);
    n41 = ~(n2 & n38);
    n47 = ~n35;
    n51 = n47 & n38;
    n62 = ~(n2 & n12 & n30);
    n63 = ~(n2 & n12 & n30);
    n65 = ~(n62 | n12);
    n89 = ~(n65 ^ n38);
    n93 = n89 | n38;
    n99 = n63;
    n117 = ~((n93 & n20) | n30);
    n145 = n41;
    n171 = ~(n99 | n12);
    n173 = n145;
    n398 = n117 & n32;
    n399 = n117 & n32;
    n414 = n51 & n16;
    n415 = n51 & n16;
    n427 = ~n35;
    n430 = ~n171;
    n514 = n10 & n20;
    n532 = n12 & n20;
    n548 = n14 & n20;
    n598 = n399 & n430;
    n648 = n398 | n514;
    n664 = n414 | n532;
    n682 = n415 ^ n548;
    n683 = n415 & n548;
    n749 = n6 & n22;
    n764 = n8 & n22;
    n782 = n10 & n22;
    n798 = n12 & n22;
    n814 = n14 & n22;
    n898 = n648 | n764;
    n914 = n664 | n782;
    n932 = n682 ^ n798;
    n933 = n682 & n798;
    n948 = (n683 ^ n814) ^ n933;
    n949 = (n683 & n814) | (n814 & n933) | (n683 & n933);
    n1014 = n6 & n24;
    n1032 = n8 & n24;
    n1048 = n10 & n24;
    n1049 = n10 & n24;
    n1064 = n12 & n24;
    n1082 = n14 & n24;
    n1148 = n898 | n1014;
    n1164 = n914 ^ n1032;
    n1165 = n914 & n1032;
    n1182 = (n932 ^ n1048) ^ n1165;
    n1183 = (n932 & n1048) | (n1048 & n1165) | (n932 & n1165);
    n1198 = (n948 ^ n1064) ^ n1183;
    n1199 = (n948 & n1064) | (n1064 & n1183) | (n948 & n1183);
    n1214 = (n949 ^ n1082) ^ n1199;
    n1215 = (n949 & n1082) | (n1082 & n1199) | (n949 & n1199);
    n1264 = n4 & n26;
    n1282 = n6 & n26;
    n1298 = n8 & n26;
    n1314 = n10 & n26;
    n1321 = n33;
    n1332 = n12 & n26;
    n1348 = n14 & n26;
    n1364 = n173 & n598;
    n1399 = n1148 | n1264;
    n1414 = (n1164 ^ n1282) ^ n1399;
    n1415 = (n1164 & n1282) | (n1282 & n1399) | (n1164 & n1399);
    n1432 = (n1182 ^ n1298) ^ n1415;
    n1433 = (n1182 & n1298) | (n1298 & n1415) | (n1182 & n1415);
    n1448 = (n1198 ^ n1314) ^ n1433;
    n1449 = (n1198 & n1314) | (n1314 & n1433) | (n1198 & n1433);
    n1464 = (n1214 ^ n1332) ^ n1449;
    n1465 = (n1214 & n1332) | (n1332 & n1449) | (n1214 & n1449);
    n1482 = (n1215 ^ n1348) ^ n1465;
    n1483 = (n1215 & n1348) | (n1348 & n1465) | (n1215 & n1465);
    n1532 = n4 & n28;
    n1548 = n6 & n28;
    n1564 = n8 & n28;
    n1582 = n10 & n28;
    n1598 = n12 & n28;
    n1614 = n14 & n28;
    n1632 = n1049;
    n1664 = n1414 ^ n1532;
    n1665 = n1414 & n1532;
    n1682 = (n1432 ^ n1548) ^ n1665;
    n1683 = (n1432 & n1548) | (n1548 & n1665) | (n1432 & n1665);
    n1698 = (n1448 ^ n1564) ^ n1683;
    n1699 = (n1448 & n1564) | (n1564 & n1683) | (n1448 & n1683);
    n1714 = (n1464 ^ n1582) ^ n1699;
    n1715 = (n1464 & n1582) | (n1582 & n1699) | (n1464 & n1699);
    n1732 = (n1482 ^ n1598) ^ n1715;
    n1733 = (n1482 & n1598) | (n1598 & n1715) | (n1482 & n1715);
    n1748 = (n1483 ^ n1614) ^ n1733;
    n1749 = (n1483 & n1614) | (n1614 & n1733) | (n1483 & n1733);
    n1764 = n2 & n30;
    n1782 = n2 & n30;
    n1798 = n4 & n30;
    n1814 = n6 & n30;
    n1832 = n8 & n30;
    n1848 = n10 & n30;
    n1864 = n12 & n30;
    n1882 = n14 & n30;
    n1898 = n427 ^ n1764;
    n1914 = n1664 ^ n1782;
    n1915 = n1664 & n1782;
    n1932 = (n1682 ^ n1798) ^ n1915;
    n1933 = (n1682 & n1798) | (n1798 & n1915) | (n1682 & n1915);
    n1948 = (n1698 ^ n1814) ^ n1933;
    n1949 = (n1698 & n1814) | (n1814 & n1933) | (n1698 & n1933);
    n1964 = (n1714 ^ n1832) ^ n1949;
    n1965 = (n1714 & n1832) | (n1832 & n1949) | (n1714 & n1949);
    n1982 = (n1732 ^ n1848) ^ n1965;
    n1983 = (n1732 & n1848) | (n1848 & n1965) | (n1732 & n1965);
    n1998 = (n1748 ^ n1864) ^ n1983;
    n1999 = (n1748 & n1864) | (n1864 & n1983) | (n1748 & n1983);
    n2014 = (n1749 ^ n1882) ^ n1999;
    n2015 = (n1749 & n1882) | (n1882 & n1999) | (n1749 & n1999);
  
    c |= (n1321 & 0x1) << 0;
    c |= (n598 & 0x1) << 1;
    c |= (n1699 & 0x1) << 2;
    c |= (n1632 & 0x1) << 3;
    c |= (n749 & 0x1) << 4;
    c |= (n1364 & 0x1) << 5;
    c |= (n1632 & 0x1) << 6;
    c |= (n1898 & 0x1) << 7;
    c |= (n1914 & 0x1) << 8;
    c |= (n1932 & 0x1) << 9;
    c |= (n1948 & 0x1) << 10;
    c |= (n1964 & 0x1) << 11;
    c |= (n1982 & 0x1) << 12;
    c |= (n1998 & 0x1) << 13;
    c |= (n2014 & 0x1) << 14;
    c |= (n2015 & 0x1) << 15;
  
    return c;
  }
  
  