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mul8_456.c
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mul8_456.c
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/***
* 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_456
/// Library = EvoApprox8b
/// Circuit = mul8_456
/// Area (180) = 5828
/// Delay (180) = 4.570
/// Power (180) = 2619.50
/// Area (45) = 425
/// Delay (45) = 1.630
/// Power (45) = 226.80
/// Nodes = 97
/// HD = 310406
/// MAE = 151.44473
/// MSE = 38242.60083
/// MRE = 3.78 %
/// WCE = 904
/// WCRE = 356 %
/// EP = 97.8 %
uint16_t mul8_456(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 n33;
uint8_t n34;
uint8_t n39;
uint8_t n41;
uint8_t n43;
uint8_t n46;
uint8_t n47;
uint8_t n49;
uint8_t n54;
uint8_t n57;
uint8_t n66;
uint8_t n69;
uint8_t n72;
uint8_t n73;
uint8_t n83;
uint8_t n131;
uint8_t n193;
uint8_t n201;
uint8_t n224;
uint8_t n264;
uint8_t n282;
uint8_t n377;
uint8_t n398;
uint8_t n399;
uint8_t n414;
uint8_t n415;
uint8_t n498;
uint8_t n514;
uint8_t n532;
uint8_t n548;
uint8_t n632;
uint8_t n633;
uint8_t n648;
uint8_t n664;
uint8_t n665;
uint8_t n682;
uint8_t n683;
uint8_t n748;
uint8_t n749;
uint8_t n764;
uint8_t n782;
uint8_t n798;
uint8_t n814;
uint8_t n882;
uint8_t n898;
uint8_t n899;
uint8_t n914;
uint8_t n915;
uint8_t n932;
uint8_t n933;
uint8_t n948;
uint8_t n949;
uint8_t n998;
uint8_t n1014;
uint8_t n1032;
uint8_t n1048;
uint8_t n1064;
uint8_t n1082;
uint8_t n1132;
uint8_t n1133;
uint8_t n1148;
uint8_t n1149;
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 n1248;
uint8_t n1264;
uint8_t n1282;
uint8_t n1298;
uint8_t n1314;
uint8_t n1332;
uint8_t n1348;
uint8_t n1382;
uint8_t n1398;
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 n1514;
uint8_t n1532;
uint8_t n1548;
uint8_t n1564;
uint8_t n1582;
uint8_t n1598;
uint8_t n1614;
uint8_t n1632;
uint8_t n1648;
uint8_t n1649;
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;
n33 = ~(n18 & n12 & n6);
n34 = ~(n30 & n28 & n26);
n39 = (n26 & n20) | (~n26 & n22);
n41 = n2 & n39;
n43 = ~(n33 | n34);
n46 = n43;
n47 = n43;
n49 = ~(n46 & n14);
n54 = ~(n33 | n24);
n57 = ~n49;
n66 = ~(n18 & n16);
n69 = ~(n33 | n66);
n72 = ~(n49 | n47);
n73 = ~(n49 | n47);
n83 = n39 & n72;
n131 = n69;
n193 = ~(n57 & n12 & n131);
n201 = ~n193;
n224 = n73;
n264 = n12 & n18;
n282 = n14 & n18;
n377 = n41;
n398 = n201 ^ n264;
n399 = n201 & n264;
n414 = n399 ^ n282;
n415 = n399 & n282;
n498 = n8 & n224;
n514 = n10 & n20;
n532 = n12 & n20;
n548 = n14 & n20;
n632 = n377 | n498;
n633 = n377 | n498;
n648 = n398 | n514;
n664 = n414 ^ n532;
n665 = n414 & n532;
n682 = (n415 ^ n548) ^ n665;
n683 = (n415 & n548) | (n548 & n665) | (n415 & n665);
n748 = n6 & n22;
n749 = n6 & n22;
n764 = n8 & n22;
n782 = n10 & n22;
n798 = n12 & n22;
n814 = n14 & n22;
n882 = n632 ^ n748;
n898 = n648 ^ n764;
n899 = n648 & n764;
n914 = (n664 ^ n782) ^ n899;
n915 = (n664 & n782) | (n782 & n899) | (n664 & n899);
n932 = (n682 ^ n798) ^ n915;
n933 = (n682 & n798) | (n798 & n915) | (n682 & n915);
n948 = (n683 ^ n814) ^ n933;
n949 = (n683 & n814) | (n814 & n933) | (n683 & n933);
n998 = n4 & n24;
n1014 = n6 & n24;
n1032 = n8 & n24;
n1048 = n10 & n24;
n1064 = n12 & n24;
n1082 = n14 & n24;
n1132 = n882 ^ n998;
n1133 = n882 & n998;
n1148 = (n898 ^ n1014) ^ n1133;
n1149 = (n898 & n1014) | (n1014 & n1133) | (n898 & n1133);
n1164 = (n914 ^ n1032) ^ n1149;
n1165 = (n914 & n1032) | (n1032 & n1149) | (n914 & n1149);
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);
n1248 = n2 & n26;
n1264 = n4 & n26;
n1282 = n6 & n26;
n1298 = n8 & n26;
n1314 = n10 & n26;
n1332 = n12 & n26;
n1348 = n14 & n26;
n1382 = n1132 | n1248;
n1398 = (n1148 ^ n1264) ^ n1183;
n1399 = (n1148 & n1264) | (n1264 & n1183) | (n1148 & n1183);
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);
n1514 = n2 & n28;
n1532 = n4 & n28;
n1548 = n6 & n28;
n1564 = n8 & n28;
n1582 = n10 & n28;
n1598 = n12 & n28;
n1614 = n14 & n28;
n1632 = n1382 | n1414;
n1648 = n1398 ^ n1514;
n1649 = n1398 & n1514;
n1664 = (n1414 ^ n1532) ^ n1649;
n1665 = (n1414 & n1532) | (n1532 & n1649) | (n1414 & n1649);
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 = n0 & n30;
n1782 = n2 & n30;
n1798 = n4 & n30;
n1814 = n6 & n30;
n1832 = n8 & n30;
n1848 = n10 & n30;
n1864 = n12 & n30;
n1882 = n14 & n30;
n1898 = n1648 | 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 |= (n633 & 0x1) << 0;
c |= (n54 & 0x1) << 1;
c |= (n83 & 0x1) << 2;
c |= (n1632 & 0x1) << 3;
c |= (n749 & 0x1) << 4;
c |= (n1898 & 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;
}