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mul8_123.c
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mul8_123.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_123
/// Library = EvoApprox8b
/// Circuit = mul8_123
/// Area (180) = 8412
/// Delay (180) = 5.020
/// Power (180) = 4276.50
/// Area (45) = 615
/// Delay (45) = 1.850
/// Power (45) = 371.90
/// Nodes = 128
/// HD = 89737
/// MAE = 10.60889
/// MSE = 322.59766
/// MRE = 0.36 %
/// WCE = 80
/// WCRE = 100 %
/// EP = 59.0 %
uint16_t mul8_123(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 n36;
uint8_t n37;
uint8_t n38;
uint8_t n40;
uint8_t n47;
uint8_t n49;
uint8_t n54;
uint8_t n55;
uint8_t n61;
uint8_t n65;
uint8_t n82;
uint8_t n98;
uint8_t n114;
uint8_t n132;
uint8_t n137;
uint8_t n148;
uint8_t n164;
uint8_t n169;
uint8_t n182;
uint8_t n198;
uint8_t n214;
uint8_t n232;
uint8_t n248;
uint8_t n264;
uint8_t n282;
uint8_t n298;
uint8_t n299;
uint8_t n315;
uint8_t n332;
uint8_t n348;
uint8_t n349;
uint8_t n364;
uint8_t n365;
uint8_t n382;
uint8_t n383;
uint8_t n398;
uint8_t n399;
uint8_t n414;
uint8_t n415;
uint8_t n432;
uint8_t n464;
uint8_t n482;
uint8_t n498;
uint8_t n514;
uint8_t n532;
uint8_t n535;
uint8_t n548;
uint8_t n564;
uint8_t n582;
uint8_t n598;
uint8_t n614;
uint8_t n615;
uint8_t n632;
uint8_t n633;
uint8_t n648;
uint8_t n649;
uint8_t n664;
uint8_t n665;
uint8_t n682;
uint8_t n683;
uint8_t n698;
uint8_t n714;
uint8_t n732;
uint8_t n748;
uint8_t n764;
uint8_t n782;
uint8_t n798;
uint8_t n814;
uint8_t n832;
uint8_t n833;
uint8_t n848;
uint8_t n849;
uint8_t n864;
uint8_t n865;
uint8_t n882;
uint8_t n883;
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 n964;
uint8_t n982;
uint8_t n998;
uint8_t n1014;
uint8_t n1032;
uint8_t n1048;
uint8_t n1064;
uint8_t n1082;
uint8_t n1098;
uint8_t n1099;
uint8_t n1114;
uint8_t n1115;
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 n1232;
uint8_t n1248;
uint8_t n1264;
uint8_t n1282;
uint8_t n1298;
uint8_t n1314;
uint8_t n1332;
uint8_t n1348;
uint8_t n1364;
uint8_t n1365;
uint8_t n1382;
uint8_t n1383;
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 n1498;
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 n1633;
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 n1899;
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 = n0 & n16;
n36 = ~(n10 & n22 & n30);
n37 = ~(n10 & n22 & n30);
n38 = n18 & n0;
n40 = ~(n38 & n28);
n47 = n10;
n49 = n2 & n16;
n54 = ~((n30 & n40) | n36);
n55 = ~((n30 & n40) | n36);
n61 = ~(n37 & n6 & n22);
n65 = n4 & n54;
n82 = n6 & n16;
n98 = n8 & n16;
n114 = n10 & n32;
n132 = n12 & n16;
n137 = n65;
n148 = n14 & n16;
n164 = n0 & n18;
n169 = n49;
n182 = ~(n14 & n18 & n47);
n198 = n4 & n18;
n214 = n6 & n18;
n232 = n8 & n18;
n248 = n10 & n18;
n264 = n12 & n18;
n282 = n14 & n18;
n298 = n169 ^ n164;
n299 = n169 & n164;
n315 = (n137 & n182) | (n182 & n299) | (n137 & n299);
n332 = (n82 ^ n198) ^ n315;
n348 = (n98 ^ n214) ^ n55;
n349 = (n98 & n214) | (n214 & n55) | (n98 & n55);
n364 = (n114 ^ n232) ^ n349;
n365 = (n114 & n232) | (n232 & n349) | (n114 & n349);
n382 = (n132 ^ n248) ^ n365;
n383 = (n132 & n248) | (n248 & n365) | (n132 & n365);
n398 = (n148 ^ n264) ^ n383;
n399 = (n148 & n264) | (n264 & n383) | (n148 & n383);
n414 = n399 ^ n282;
n415 = n399 & n282;
n432 = n0 & n20;
n464 = n4 & n20;
n482 = n6 & n20;
n498 = n8 & n20;
n514 = n10 & n20;
n532 = n12 & n20;
n535 = ~n399;
n548 = n14 & n20;
n564 = (n535 & n432) | (~n535 & n61);
n582 = n332;
n598 = n348 | n464;
n614 = n364 ^ n482;
n615 = n364 & n482;
n632 = (n382 ^ n498) ^ n615;
n633 = (n382 & n498) | (n498 & n615) | (n382 & n615);
n648 = (n398 ^ n514) ^ n633;
n649 = (n398 & n514) | (n514 & n633) | (n398 & n633);
n664 = (n414 ^ n532) ^ n649;
n665 = (n414 & n532) | (n532 & n649) | (n414 & n649);
n682 = (n415 ^ n548) ^ n665;
n683 = (n415 & n548) | (n548 & n665) | (n415 & n665);
n698 = n0 & n22;
n714 = n2 & n22;
n732 = n4 & n22;
n748 = n6 & n22;
n764 = n8 & n22;
n782 = n10 & n22;
n798 = n12 & n22;
n814 = n14 & n22;
n832 = n582 ^ n698;
n833 = n582 & n698;
n848 = (n598 ^ n714) ^ n833;
n849 = (n598 & n714) | (n714 & n833) | (n598 & n833);
n864 = (n614 ^ n732) ^ n849;
n865 = (n614 & n732) | (n732 & n849) | (n614 & n849);
n882 = (n632 ^ n748) ^ n865;
n883 = (n632 & n748) | (n748 & n865) | (n632 & n865);
n898 = (n648 ^ n764) ^ n883;
n899 = (n648 & n764) | (n764 & n883) | (n648 & n883);
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);
n964 = n0 & n24;
n982 = n2 & n24;
n998 = n4 & n24;
n1014 = n6 & n24;
n1032 = n8 & n24;
n1048 = n10 & n24;
n1064 = n12 & n24;
n1082 = n14 & n24;
n1098 = n848 ^ n964;
n1099 = n848 & n964;
n1114 = (n864 ^ n982) ^ n1099;
n1115 = (n864 & n982) | (n982 & n1099) | (n864 & n1099);
n1132 = (n882 ^ n998) ^ n1115;
n1133 = (n882 & n998) | (n998 & n1115) | (n882 & n1115);
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);
n1232 = n0 & n26;
n1248 = n2 & n26;
n1264 = n4 & n26;
n1282 = n6 & n26;
n1298 = n8 & n26;
n1314 = n10 & n26;
n1332 = n12 & n26;
n1348 = n14 & n26;
n1364 = n1114 ^ n1232;
n1365 = n1114 & n1232;
n1382 = (n1132 ^ n1248) ^ n1365;
n1383 = (n1132 & n1248) | (n1248 & n1365) | (n1132 & n1365);
n1398 = (n1148 ^ n1264) ^ n1383;
n1399 = (n1148 & n1264) | (n1264 & n1383) | (n1148 & n1383);
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);
n1498 = n0 & n28;
n1514 = n2 & n28;
n1532 = n4 & n28;
n1548 = n6 & n28;
n1564 = n8 & n28;
n1582 = n10 & n28;
n1598 = n12 & n28;
n1614 = n14 & n28;
n1632 = n1382 ^ n1498;
n1633 = n1382 & n1498;
n1648 = (n1398 ^ n1514) ^ n1633;
n1649 = (n1398 & n1514) | (n1514 & n1633) | (n1398 & n1633);
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;
n1899 = n1648 & n1764;
n1914 = (n1664 ^ n1782) ^ n1899;
n1915 = (n1664 & n1782) | (n1782 & n1899) | (n1664 & n1899);
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 |= (n32 & 0x1) << 0;
c |= (n298 & 0x1) << 1;
c |= (n564 & 0x1) << 2;
c |= (n832 & 0x1) << 3;
c |= (n1098 & 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;
}