/*** * 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_224 /// Library = EvoApprox8b /// Circuit = mul8_224 /// Area (180) = 3728 /// Delay (180) = 2.220 /// Power (180) = 1475.80 /// Area (45) = 271 /// Delay (45) = 0.850 /// Power (45) = 125.80 /// Nodes = 70 /// HD = 375130 /// MAE = 557.68112 /// MSE = 504401.08984 /// MRE = 9.90 % /// WCE = 2927 /// WCRE = 606 % /// EP = 99.0 % uint16_t mul8_224(uint8_t a, uint8_t b) { uint16_t c = 0; 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 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 n41; uint8_t n49; uint8_t n61; uint8_t n73; uint8_t n79; uint8_t n82; uint8_t n91; uint8_t n157; uint8_t n165; uint8_t n190; uint8_t n244; uint8_t n372; uint8_t n420; uint8_t n476; uint8_t n485; uint8_t n490; uint8_t n564; uint8_t n580; uint8_t n594; uint8_t n608; uint8_t n617; uint8_t n683; uint8_t n698; uint8_t n712; uint8_t n728; uint8_t n787; uint8_t n802; uint8_t n816; uint8_t n832; uint8_t n846; uint8_t n906; uint8_t n920; uint8_t n934; uint8_t n950; uint8_t n964; uint8_t n1186; uint8_t n1187; uint8_t n1202; uint8_t n1203; uint8_t n1216; uint8_t n1232; uint8_t n1306; uint8_t n1335; uint8_t n1350; uint8_t n1351; uint8_t n1405; uint8_t n1424; uint8_t n1425; uint8_t n1438; uint8_t n1439; uint8_t n1454; uint8_t n1455; uint8_t n1468; uint8_t n1482; uint8_t n1542; uint8_t n1543; uint8_t n1586; uint8_t n1587; uint8_t n1602; uint8_t n1603; uint8_t n1616; uint8_t n1632; uint8_t n1646; uint8_t n1660; uint8_t n1750; uint8_t n1764; uint8_t n1765; uint8_t n1780; uint8_t n1781; uint8_t n1794; uint8_t n1795; uint8_t n1808; uint8_t n1809; uint8_t n1824; uint8_t n1838; uint8_t n1898; uint8_t n1912; uint8_t n1928; uint8_t n1942; uint8_t n1943; uint8_t n1956; uint8_t n1957; uint8_t n1972; uint8_t n1973; uint8_t n1986; uint8_t n1987; uint8_t n2016; n41 = ~(n12 ^ n12); n49 = ~(n18 & n12); n61 = ~(n26 | n28 | n30); n73 = ~n41; n79 = ~n61; n82 = ~(n6 | n8 | n10); n91 = ~(n79 | n20 | n22); n157 = ~((n41 & n82) | n91); n165 = ~n61; n190 = ~n73; n244 = n157; n372 = n14 & n20; n420 = n165 & n4; n476 = n12 & n22; n485 = ~n49; n490 = n14 & n22; n564 = n8 & n24; n580 = n10 & n24; n594 = n12 & n24; n608 = n14 & n24; n617 = ~n41; n683 = n8 & n26; n698 = n10 & n26; n712 = n12 & n26; n728 = n14 & n26; n787 = n6 & n28; n802 = n8 & n28; n816 = n10 & n28; n832 = n12 & n28; n846 = n14 & n28; n906 = n6 & n30; n920 = n8 & n30; n934 = n10 & n30; n950 = n12 & n30; n964 = n14 & n30; n1186 = n476 ^ n580; n1187 = n476 & n580; n1202 = (n490 ^ n594) ^ n698; n1203 = (n490 & n594) | (n594 & n698) | (n490 & n698); n1216 = n608 & n712; n1232 = n608 ^ n712; n1306 = n157; n1335 = n617; n1350 = (n372 ^ n420) ^ n1186; n1351 = (n372 & n420) | (n420 & n1186) | (n372 & n1186); n1405 = ~n41; n1424 = (n1187 ^ n802) ^ n906; n1425 = (n1187 & n802) | (n802 & n906) | (n1187 & n906); n1438 = (n1203 ^ n816) ^ n920; n1439 = (n1203 & n816) | (n816 & n920) | (n1203 & n920); n1454 = (n1216 ^ n832) ^ n934; n1455 = (n1216 & n832) | (n832 & n934) | (n1216 & n934); n1468 = n846 & n950; n1482 = n846 ^ n950; n1542 = n1306; n1543 = n1306; n1586 = (n1350 ^ n1335) ^ n787; n1587 = (n1350 & n1335) | (n1335 & n787) | (n1350 & n787); n1602 = (n1202 ^ n1216) ^ n1424; n1603 = (n1202 & n1216) | (n1216 & n1424) | (n1202 & n1424); n1616 = n1232 & n1438; n1632 = n1232 ^ n1438; n1646 = n728 & n1454; n1660 = n728 ^ n1454; n1750 = n1586; n1764 = (n1602 ^ n1587) ^ n1351; n1765 = (n1602 & n1587) | (n1587 & n1351) | (n1602 & n1351); n1780 = (n1632 ^ n1603) ^ n1425; n1781 = (n1632 & n1603) | (n1603 & n1425) | (n1632 & n1425); n1794 = (n1660 ^ n1616) ^ n1439; n1795 = (n1660 & n1616) | (n1616 & n1439) | (n1660 & n1439); n1808 = (n1482 ^ n1646) ^ n1455; n1809 = (n1482 & n1646) | (n1646 & n1455) | (n1482 & n1455); n1824 = n41 & n1468; n1838 = n964 ^ n1468; n1898 = n485 | n564; n1912 = (n683 & n190) | (~n683 & n1750); n1928 = n1764; n1942 = n1780 ^ n1765; n1943 = n1780 & n1765; n1956 = (n1794 ^ n1781) ^ n1943; n1957 = (n1794 & n1781) | (n1781 & n1943) | (n1794 & n1943); n1972 = (n1808 ^ n1795) ^ n1957; n1973 = (n1808 & n1795) | (n1795 & n1957) | (n1808 & n1957); n1986 = (n1838 ^ n1809) ^ n1973; n1987 = (n1838 & n1809) | (n1809 & n1973) | (n1838 & n1973); n2016 = n1824 | n1987; c |= (n617 & 0x1) << 0; c |= (n1542 & 0x1) << 1; c |= (n1187 & 0x1) << 2; c |= (n617 & 0x1) << 3; c |= (n1405 & 0x1) << 4; c |= (n1306 & 0x1) << 5; c |= (n1543 & 0x1) << 6; c |= (n244 & 0x1) << 7; c |= (n1898 & 0x1) << 8; c |= (n1912 & 0x1) << 9; c |= (n1928 & 0x1) << 10; c |= (n1942 & 0x1) << 11; c |= (n1956 & 0x1) << 12; c |= (n1972 & 0x1) << 13; c |= (n1986 & 0x1) << 14; c |= (n2016 & 0x1) << 15; return c; }