/*** * 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_436 /// Library = EvoApprox8b /// Circuit = mul8_436 /// Area (180) = 10639 /// Delay (180) = 2.380 /// Power (180) = 5006.50 /// Area (45) = 763 /// Delay (45) = 0.900 /// Power (45) = 428.80 /// Nodes = 176 /// HD = 225560 /// MAE = 373.76202 /// MSE = 488488.21680 /// MRE = 5.11 % /// WCE = 2448 /// WCRE = 100 % /// EP = 88.4 % uint16_t mul8_436(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 n38; uint8_t n39; uint8_t n40; uint8_t n41; uint8_t n43; uint8_t n46; uint8_t n47; uint8_t n51; uint8_t n53; uint8_t n54; uint8_t n55; uint8_t n60; uint8_t n61; uint8_t n65; uint8_t n66; uint8_t n67; uint8_t n70; uint8_t n71; uint8_t n72; uint8_t n73; uint8_t n74; uint8_t n76; uint8_t n77; uint8_t n83; uint8_t n86; uint8_t n88; uint8_t n89; uint8_t n90; uint8_t n91; uint8_t n95; uint8_t n97; uint8_t n98; uint8_t n100; uint8_t n101; uint8_t n105; uint8_t n106; uint8_t n108; uint8_t n110; uint8_t n113; uint8_t n121; uint8_t n125; uint8_t n126; uint8_t n131; uint8_t n134; uint8_t n150; uint8_t n153; uint8_t n164; uint8_t n167; uint8_t n177; uint8_t n180; uint8_t n185; uint8_t n189; uint8_t n194; uint8_t n208; uint8_t n224; uint8_t n233; uint8_t n238; uint8_t n249; uint8_t n251; uint8_t n254; uint8_t n255; uint8_t n265; uint8_t n268; uint8_t n272; uint8_t n282; uint8_t n298; uint8_t n312; uint8_t n314; uint8_t n323; uint8_t n343; uint8_t n356; uint8_t n372; uint8_t n386; uint8_t n402; uint8_t n416; uint8_t n432; uint8_t n446; uint8_t n449; uint8_t n456; uint8_t n460; uint8_t n476; uint8_t n490; uint8_t n493; uint8_t n506; uint8_t n520; uint8_t n534; uint8_t n550; uint8_t n556; uint8_t n564; uint8_t n580; uint8_t n594; uint8_t n608; uint8_t n638; uint8_t n668; uint8_t n682; uint8_t n698; uint8_t n712; uint8_t n728; uint8_t n739; uint8_t n742; uint8_t n756; uint8_t n772; uint8_t n786; uint8_t n802; uint8_t n816; uint8_t n832; uint8_t n846; uint8_t n860; uint8_t n876; uint8_t n890; uint8_t n906; uint8_t n920; uint8_t n934; uint8_t n950; uint8_t n964; uint8_t n980; uint8_t n994; uint8_t n995; uint8_t n1008; uint8_t n1009; uint8_t n1024; uint8_t n1025; uint8_t n1037; uint8_t n1038; uint8_t n1039; uint8_t n1054; uint8_t n1055; uint8_t n1068; uint8_t n1069; uint8_t n1082; uint8_t n1083; uint8_t n1098; uint8_t n1112; uint8_t n1113; uint8_t n1129; uint8_t n1142; uint8_t n1143; uint8_t n1156; uint8_t n1157; uint8_t n1172; uint8_t n1173; uint8_t n1186; uint8_t n1187; uint8_t n1202; uint8_t n1203; uint8_t n1232; uint8_t n1233; uint8_t n1247; uint8_t n1260; uint8_t n1261; uint8_t n1276; uint8_t n1277; uint8_t n1290; uint8_t n1291; uint8_t n1306; uint8_t n1307; uint8_t n1320; uint8_t n1321; uint8_t n1334; uint8_t n1335; uint8_t n1350; uint8_t n1351; uint8_t n1364; uint8_t n1365; uint8_t n1380; uint8_t n1381; uint8_t n1390; uint8_t n1394; uint8_t n1395; uint8_t n1408; uint8_t n1409; 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 n1498; uint8_t n1499; uint8_t n1512; uint8_t n1513; uint8_t n1528; uint8_t n1529; uint8_t n1542; uint8_t n1543; uint8_t n1556; uint8_t n1557; uint8_t n1572; uint8_t n1573; 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 n1676; uint8_t n1677; uint8_t n1690; uint8_t n1691; uint8_t n1706; uint8_t n1707; uint8_t n1720; uint8_t n1721; uint8_t n1734; uint8_t n1735; uint8_t n1750; uint8_t n1751; 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 n1854; uint8_t n1855; uint8_t n1863; uint8_t n1868; uint8_t n1882; uint8_t n1898; uint8_t n1899; uint8_t n1910; uint8_t n1912; uint8_t n1913; 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; n32 = n0 & n16; n33 = n0 & n16; n38 = (n24 & n0) | (~n24 & n10); n39 = (n24 & n0) | (~n24 & n10); n40 = n18 ^ n28; n41 = n18 ^ n28; n43 = n2 & n8; n46 = n14 & n16; n47 = n14 & n16; n51 = n4 & n20; n53 = n26 & n4; n54 = (n26 & n46) | (~n26 & n30); n55 = (n26 & n46) | (~n26 & n30); n60 = n4 & n16; n61 = n4 & n16; n65 = n28 & n38; n66 = ~n55; n67 = ~n55; n70 = ~(n41 & n46 & n43); n71 = ~(n41 & n46 & n43); n72 = ~((n18 & n46) | n51); n73 = ~((n18 & n46) | n51); n74 = ~((n2 | n28) & n53); n76 = n6 & n16; n77 = n6 & n16; n83 = ~(n77 & n54); n86 = ~n71; n88 = n65 | n12; n89 = n65 | n12; n90 = n8 & n16; n91 = n8 & n16; n95 = ~(n39 & n20); n97 = ~(n73 | n70); n98 = ~(n91 & n24); n100 = ~((n33 & n70) | n47); n101 = ~((n33 & n70) | n47); n105 = ~n97; n106 = n10 & n16; n108 = ~(n97 | n74 | n6); n110 = n101 & n88; n113 = ~((n105 & n54) | n83); n121 = n12 & n16; n125 = (n108 & n66) | (~n108 & n53); n126 = (n95 & n100) | (~n95 & n47); n131 = ~(n0 & n125 & n55); n134 = n14 & n16; n150 = n0 & n18; n153 = n97 ^ n110; n164 = n65 & n18; n167 = ~(n113 & n40); n177 = n153; n180 = n4 & n18; n185 = ~(n2 & n28); n189 = n77 & n98; n194 = n6 & n18; n208 = n8 & n18; n224 = n10 & n18; n233 = ~n73; n238 = n12 & n18; n249 = n177; n251 = n33 ^ n74; n254 = n14 & n18; n255 = n14 & n18; n265 = n249 & n126; n268 = n189 & n20; n272 = (n6 & n86) | (~n6 & n233); n282 = n2 & n20; n298 = n4 & n272; n312 = n6 & n20; n314 = ~n67; n323 = n131; n343 = n10 & n20; n356 = n12 & n20; n372 = n14 & n20; n386 = n51 & n72; n402 = n2 & n22; n416 = n4 & n22; n432 = n6 & n22; n446 = n8 & n22; n449 = ~(n185 | n134 | n323); n456 = ~n105; n460 = n10 & n22; n476 = n12 & n22; n490 = n14 & n22; n493 = ~(n61 | n314); n506 = n0 & n24; n520 = n2 & n24; n534 = n4 & n24; n550 = n6 & n24; n556 = n265 & n255; n564 = n8 & n24; n580 = n10 & n24; n594 = n12 & n24; n608 = n14 & n24; n638 = n2 & n26; n668 = n6 & n26; n682 = n8 & n26; n698 = n10 & n26; n712 = n12 & n26; n728 = n14 & n26; n739 = ~(n251 | n356 | n493); n742 = n0 & n28; n756 = n2 & n28; n772 = n4 & n28; n786 = n6 & n28; n802 = n8 & n28; n816 = n10 & n28; n832 = n12 & n28; n846 = n14 & n28; n860 = n0 & n30; n876 = n2 & n30; n890 = n4 & n30; n906 = n6 & n30; n920 = n8 & n30; n934 = n10 & n30; n950 = n12 & n30; n964 = n14 & n30; n980 = n46 ^ n150; n994 = (n60 ^ n164) ^ n268; n995 = (n60 & n164) | (n164 & n268) | (n60 & n268); n1008 = (n76 ^ n180) ^ n282; n1009 = (n76 & n180) | (n180 & n282) | (n76 & n282); n1024 = (n90 ^ n194) ^ n298; n1025 = (n90 & n194) | (n194 & n298) | (n90 & n298); n1037 = n449; n1038 = (n106 ^ n208) ^ n312; n1039 = (n106 & n208) | (n208 & n312) | (n106 & n312); n1054 = n121 ^ n224; n1055 = n121 & n224; n1068 = (n134 ^ n238) ^ n343; n1069 = (n134 & n238) | (n238 & n343) | (n134 & n343); n1082 = n254 & n356; n1083 = n254 & n356; n1098 = n254 ^ n356; n1112 = n402 ^ n506; n1113 = n402 & n506; n1129 = (n416 & n520) | (n520 & n1083) | (n416 & n1083); n1142 = (n432 ^ n534) ^ n638; n1143 = (n432 & n534) | (n534 & n638) | (n432 & n638); n1156 = n446 ^ n550; n1157 = n446 & n550; n1172 = (n460 ^ n564) ^ n668; n1173 = (n460 & n564) | (n564 & n668) | (n460 & n668); n1186 = (n476 ^ n580) ^ n682; n1187 = (n476 & n580) | (n580 & n682) | (n476 & n682); n1202 = (n490 ^ n594) ^ n698; n1203 = (n490 & n594) | (n594 & n698) | (n490 & n698); n1232 = n608 ^ n712; n1233 = n608 & n712; n1247 = n994 & n556; n1260 = (n1008 ^ n995) ^ n386; n1261 = (n1008 & n995) | (n995 & n386) | (n1008 & n386); n1276 = (n1024 ^ n1009) ^ n1112; n1277 = (n1024 & n1009) | (n1009 & n1112) | (n1024 & n1112); n1290 = (n1038 ^ n1025) ^ n995; n1291 = (n1038 & n1025) | (n1025 & n995) | (n1038 & n995); n1306 = (n1054 ^ n1039) ^ n1142; n1307 = (n1054 & n1039) | (n1039 & n1142) | (n1054 & n1142); n1320 = (n1068 ^ n1055) ^ n1156; n1321 = (n1068 & n1055) | (n1055 & n1156) | (n1068 & n1156); n1334 = (n1098 ^ n1069) ^ n1172; n1335 = (n1098 & n1069) | (n1069 & n1172) | (n1098 & n1172); n1350 = (n372 ^ n1082) ^ n1186; n1351 = (n372 & n1082) | (n1082 & n1186) | (n372 & n1186); n1364 = n1129 ^ n742; n1365 = n1129 & n742; n1380 = (n1143 ^ n756) ^ n860; n1381 = (n1143 & n756) | (n756 & n860) | (n1143 & n860); n1390 = (n167 & n456) | (~n167 & n89); n1394 = (n1157 ^ n772) ^ n876; n1395 = (n1157 & n772) | (n772 & n876) | (n1157 & n876); n1408 = (n1173 ^ n786) ^ n890; n1409 = (n1173 & n786) | (n786 & n890) | (n1173 & n890); n1424 = (n1187 ^ n802) ^ n906; n1425 = (n1187 & n802) | (n802 & n906) | (n1187 & n906); n1438 = (n1203 ^ n816) ^ n920; n1439 = (n1203 & n816) | (n816 & n920) | (n1203 & n920); n1454 = (n1233 ^ n832) ^ n934; n1455 = (n1233 & n832) | (n832 & n934) | (n1233 & n934); n1468 = n846 & n950; n1482 = n846 ^ n950; n1498 = n1260 ^ n1247; n1499 = n1260 & n1247; n1512 = n1276 ^ n1261; n1513 = n1276 & n1261; n1528 = (n1290 ^ n1277) ^ n1113; n1529 = (n1290 & n1277) | (n1277 & n1113) | (n1290 & n1113); n1542 = (n1306 ^ n1291) ^ n1364; n1543 = (n1306 & n1291) | (n1291 & n1364) | (n1306 & n1364); n1556 = (n1320 ^ n1307) ^ n1380; n1557 = (n1320 & n1307) | (n1307 & n1380) | (n1320 & n1380); n1572 = (n1334 ^ n1321) ^ n1394; n1573 = (n1334 & n1321) | (n1321 & n1394) | (n1334 & n1394); n1586 = (n1350 ^ n1335) ^ n1408; n1587 = (n1350 & n1335) | (n1335 & n1408) | (n1350 & n1408); n1602 = (n1202 ^ n1351) ^ n1424; n1603 = (n1202 & n1351) | (n1351 & n1424) | (n1202 & n1424); n1616 = n1232 & n1438; n1632 = n1232 ^ n1438; n1646 = n728 & n1454; n1660 = n728 ^ n1454; n1676 = n1512 ^ n1499; n1677 = n1512 & n1499; n1690 = n1528 ^ n1513; n1691 = n1528 & n1513; n1706 = n1542 ^ n1529; n1707 = n1542 & n1529; n1720 = (n1556 ^ n1543) ^ n1365; n1721 = (n1556 & n1543) | (n1543 & n1365) | (n1556 & n1365); n1734 = (n1572 ^ n1557) ^ n1381; n1735 = (n1572 & n1557) | (n1557 & n1381) | (n1572 & n1381); n1750 = (n1586 ^ n1573) ^ n1395; n1751 = (n1586 & n1573) | (n1573 & n1395) | (n1586 & n1395); n1764 = (n1602 ^ n1587) ^ n1409; n1765 = (n1602 & n1587) | (n1587 & n1409) | (n1602 & n1409); 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 = n964 & n1468; n1838 = n964 ^ n1468; n1854 = n1690 ^ n1677; n1855 = n1690 & n1677; n1863 = n1037 & n1390; n1868 = (n1706 ^ n1691) ^ n1855; n1882 = n1720 | n1707; n1898 = n1734 ^ n1721; n1899 = n1734 & n1721; n1910 = n1863; n1912 = (n1750 ^ n1735) ^ n1899; n1913 = (n1750 & n1735) | (n1735 & n1899) | (n1750 & n1899); n1928 = (n1764 ^ n1910) ^ n1913; n1942 = (n1780 ^ n1765) ^ n1751; n1943 = (n1780 & n1765) | (n1765 & n1751) | (n1780 & n1751); 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 |= (n32 & 0x1) << 0; c |= (n980 & 0x1) << 1; c |= (n739 & 0x1) << 2; c |= (n1498 & 0x1) << 3; c |= (n1676 & 0x1) << 4; c |= (n1854 & 0x1) << 5; c |= (n1868 & 0x1) << 6; c |= (n1882 & 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; }