/*** * 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 #include /// 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; }