/*** * 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_491 /// Library = EvoApprox8b /// Circuit = mul8_491 /// Area (180) = 12548 /// Delay (180) = 2.920 /// Power (180) = 5817.80 /// Area (45) = 896 /// Delay (45) = 1.120 /// Power (45) = 486.00 /// Nodes = 236 /// HD = 88641 /// MAE = 148.26953 /// MSE = 99609.62500 /// MRE = 2.05 % /// WCE = 2572 /// WCRE = 100 % /// EP = 69.8 % uint16_t mul8_491(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 n42; uint8_t n44; uint8_t n50; uint8_t n51; uint8_t n52; uint8_t n56; uint8_t n62; uint8_t n68; uint8_t n70; uint8_t n74; uint8_t n81; uint8_t n82; uint8_t n87; uint8_t n88; uint8_t n94; uint8_t n100; uint8_t n106; uint8_t n112; uint8_t n113; uint8_t n118; uint8_t n126; uint8_t n130; uint8_t n132; uint8_t n138; uint8_t n139; uint8_t n144; uint8_t n150; uint8_t n155; uint8_t n156; uint8_t n162; uint8_t n168; uint8_t n176; uint8_t n182; uint8_t n188; uint8_t n194; uint8_t n200; uint8_t n201; uint8_t n206; uint8_t n212; uint8_t n220; uint8_t n226; uint8_t n228; uint8_t n232; uint8_t n238; uint8_t n243; uint8_t n244; uint8_t n250; uint8_t n256; uint8_t n262; uint8_t n270; uint8_t n276; uint8_t n282; uint8_t n288; uint8_t n294; uint8_t n300; uint8_t n306; uint8_t n314; uint8_t n320; uint8_t n321; uint8_t n326; uint8_t n332; uint8_t n338; uint8_t n344; uint8_t n345; uint8_t n350; uint8_t n358; uint8_t n364; uint8_t n370; uint8_t n376; uint8_t n382; uint8_t n388; uint8_t n394; uint8_t n400; uint8_t n408; uint8_t n409; uint8_t n414; uint8_t n420; uint8_t n426; uint8_t n432; uint8_t n433; uint8_t n438; uint8_t n439; uint8_t n444; uint8_t n445; uint8_t n452; uint8_t n453; uint8_t n458; uint8_t n459; uint8_t n464; uint8_t n465; uint8_t n470; uint8_t n471; uint8_t n476; uint8_t n482; uint8_t n488; uint8_t n489; uint8_t n494; uint8_t n495; uint8_t n502; uint8_t n503; uint8_t n508; uint8_t n509; uint8_t n514; uint8_t n515; uint8_t n520; uint8_t n521; uint8_t n526; uint8_t n527; uint8_t n530; uint8_t n532; uint8_t n538; uint8_t n546; uint8_t n547; uint8_t n553; uint8_t n558; uint8_t n559; uint8_t n564; uint8_t n565; uint8_t n570; uint8_t n571; uint8_t n576; uint8_t n577; uint8_t n582; uint8_t n583; uint8_t n588; uint8_t n589; uint8_t n596; uint8_t n597; uint8_t n602; uint8_t n603; uint8_t n608; uint8_t n609; uint8_t n614; uint8_t n615; uint8_t n620; uint8_t n621; uint8_t n626; uint8_t n627; uint8_t n632; uint8_t n633; uint8_t n640; uint8_t n641; uint8_t n646; uint8_t n652; uint8_t n653; uint8_t n658; uint8_t n659; uint8_t n664; uint8_t n665; uint8_t n670; uint8_t n671; uint8_t n676; uint8_t n677; uint8_t n684; uint8_t n685; uint8_t n690; uint8_t n691; uint8_t n696; uint8_t n697; uint8_t n702; uint8_t n708; uint8_t n714; uint8_t n720; uint8_t n726; uint8_t n727; uint8_t n734; uint8_t n735; uint8_t n740; uint8_t n741; uint8_t n746; uint8_t n747; uint8_t n752; uint8_t n753; uint8_t n758; uint8_t n759; uint8_t n764; uint8_t n765; uint8_t n770; uint8_t n771; uint8_t n778; uint8_t n779; uint8_t n784; uint8_t n785; uint8_t n796; uint8_t n802; uint8_t n803; uint8_t n808; uint8_t n809; uint8_t n814; uint8_t n815; uint8_t n820; uint8_t n821; uint8_t n828; uint8_t n829; uint8_t n834; uint8_t n835; uint8_t n840; uint8_t n841; uint8_t n846; uint8_t n847; uint8_t n852; uint8_t n853; uint8_t n858; uint8_t n859; uint8_t n916; uint8_t n922; uint8_t n946; uint8_t n952; uint8_t n958; uint8_t n966; uint8_t n996; uint8_t n1010; uint8_t n1016; uint8_t n1022; uint8_t n1035; uint8_t n1066; uint8_t n1072; uint8_t n1078; uint8_t n1084; uint8_t n1090; uint8_t n1096; uint8_t n1105; uint8_t n1140; uint8_t n1154; uint8_t n1160; uint8_t n1166; uint8_t n1172; uint8_t n1178; uint8_t n1184; uint8_t n1190; uint8_t n1204; uint8_t n1205; uint8_t n1243; uint8_t n1254; uint8_t n1260; uint8_t n1266; uint8_t n1272; uint8_t n1278; uint8_t n1292; uint8_t n1298; uint8_t n1304; uint8_t n1310; uint8_t n1355; uint8_t n1366; uint8_t n1372; uint8_t n1378; uint8_t n1386; uint8_t n1392; uint8_t n1398; uint8_t n1404; uint8_t n1410; uint8_t n1422; uint8_t n1430; uint8_t n1436; uint8_t n1454; uint8_t n1504; uint8_t n1505; uint8_t n1510; uint8_t n1516; uint8_t n1524; uint8_t n1530; uint8_t n1536; uint8_t n1542; uint8_t n1548; uint8_t n1554; uint8_t n1561; uint8_t n1568; uint8_t n1574; uint8_t n1580; uint8_t n1586; uint8_t n1592; uint8_t n1598; uint8_t n1668; uint8_t n1674; uint8_t n1680; uint8_t n1681; uint8_t n1686; uint8_t n1692; uint8_t n1698; uint8_t n1704; uint8_t n1712; uint8_t n1718; uint8_t n1724; uint8_t n1730; uint8_t n1736; uint8_t n1742; uint8_t n1756; uint8_t n1762; uint8_t n1768; uint8_t n1774; uint8_t n1968; uint8_t n1974; uint8_t n1980; uint8_t n1988; uint8_t n1994; uint8_t n2000; uint8_t n2006; uint8_t n2012; uint8_t n2018; uint8_t n2024; n32 = n0 & n16; n33 = n0 & n16; n38 = n2 & n16; n39 = n2 & n16; n40 = n2 | n39; n41 = n2 | n39; n42 = (n14 & n28) | (~n14 & n33); n44 = n4 & n16; n50 = n6 & n16; n51 = n6 & n16; n52 = n41 ^ n42; n56 = n8 & n16; n62 = n10 & n16; n68 = n12 & n16; n70 = ~((n51 & n12) | n18); n74 = n14 & n16; n81 = ~(n18 & n70); n82 = n0 & n18; n87 = ~((n81 & n52) | n22); n88 = n2 & n18; n94 = n4 & n18; n100 = n6 & n18; n106 = n8 & n18; n112 = n10 & n18; n113 = n10 & n18; n118 = n12 & n18; n126 = n14 & n18; n130 = ~(n87 ^ n28); n132 = n113 & n20; n138 = n2 & n20; n139 = n2 & n20; n144 = n4 & n20; n150 = n6 & n20; n155 = ~(n41 & n40); n156 = n8 & n20; n162 = n10 & n20; n168 = n12 & n20; n176 = n14 & n20; n182 = n0 & n22; n188 = n2 & n22; n194 = n4 & n22; n200 = n6 & n22; n201 = n6 & n22; n206 = n8 & n22; n212 = n10 & n22; n220 = n12 & n22; n226 = n14 & n22; n228 = (n81 ^ n130) ^ n155; n232 = n0 & n24; n238 = n2 & n24; n243 = ~(n201 & n228 & n139); n244 = n4 & n24; n250 = n6 & n24; n256 = n8 & n24; n262 = n10 & n24; n270 = n12 & n24; n276 = n14 & n24; n282 = n0 & n26; n288 = n2 & n26; n294 = n4 & n26; n300 = n6 & n26; n306 = n8 & n26; n314 = n10 & n26; n320 = n12 & n26; n321 = n12 & n26; n326 = n14 & n26; n332 = n0 & n28; n338 = n2 & n28; n344 = n4 & n28; n345 = n4 & n28; n350 = n321 & n28; n358 = n8 & n28; n364 = n10 & n28; n370 = n12 & n28; n376 = n14 & n28; n382 = n0 & n30; n388 = n2 & n30; n394 = n4 & n30; n400 = n6 & n30; n408 = n8 & n30; n409 = n8 & n30; n414 = n10 & n30; n420 = n12 & n30; n426 = n14 & n30; n432 = n38 ^ n82; n433 = n38 & n82; n438 = (n44 ^ n88) ^ n132; n439 = (n44 & n88) | (n88 & n132) | (n44 & n132); n444 = (n50 ^ n94) ^ n138; n445 = (n50 & n94) | (n94 & n138) | (n50 & n138); n452 = (n56 ^ n100) ^ n144; n453 = (n56 & n100) | (n100 & n144) | (n56 & n144); n458 = (n62 ^ n106) ^ n150; n459 = (n62 & n106) | (n106 & n150) | (n62 & n150); n464 = (n68 ^ n112) ^ n156; n465 = (n68 & n112) | (n112 & n156) | (n68 & n156); n470 = (n74 ^ n118) ^ n162; n471 = (n74 & n118) | (n118 & n162) | (n74 & n162); n476 = n126 & n168; n482 = n126 ^ n168; n488 = n188 ^ n232; n489 = n188 & n232; n494 = (n194 ^ n238) ^ n282; n495 = (n194 & n238) | (n238 & n282) | (n194 & n282); n502 = (n200 ^ n244) ^ n288; n503 = (n200 & n244) | (n244 & n288) | (n200 & n288); n508 = (n206 ^ n250) ^ n294; n509 = (n206 & n250) | (n250 & n294) | (n206 & n294); n514 = (n212 ^ n256) ^ n300; n515 = (n212 & n256) | (n256 & n300) | (n212 & n300); n520 = (n220 ^ n262) ^ n306; n521 = (n220 & n262) | (n262 & n306) | (n220 & n306); n526 = (n226 ^ n270) ^ n314; n527 = (n226 & n270) | (n270 & n314) | (n226 & n314); n530 = ~(n243 | n226); n532 = n276 & n320; n538 = n276 ^ n320; n546 = n438 ^ n433; n547 = n438 & n433; n553 = (n444 & n439) | (n439 & n182) | (n444 & n182); n558 = (n452 ^ n445) ^ n488; n559 = (n452 & n445) | (n445 & n488) | (n452 & n488); n564 = (n458 ^ n453) ^ n494; n565 = (n458 & n453) | (n453 & n494) | (n458 & n494); n570 = (n464 ^ n459) ^ n502; n571 = (n464 & n459) | (n459 & n502) | (n464 & n502); n576 = (n470 ^ n465) ^ n508; n577 = (n470 & n465) | (n465 & n508) | (n470 & n508); n582 = (n482 ^ n471) ^ n514; n583 = (n482 & n471) | (n471 & n514) | (n482 & n514); n588 = (n176 ^ n476) ^ n520; n589 = (n176 & n476) | (n476 & n520) | (n176 & n520); n596 = n495 ^ n332; n597 = n495 & n332; n602 = (n503 ^ n338) ^ n382; n603 = (n503 & n338) | (n338 & n382) | (n503 & n382); n608 = (n509 ^ n344) ^ n388; n609 = (n509 & n344) | (n344 & n388) | (n509 & n388); n614 = (n515 ^ n350) ^ n394; n615 = (n515 & n350) | (n350 & n394) | (n515 & n394); n620 = (n521 ^ n358) ^ n400; n621 = (n521 & n358) | (n358 & n400) | (n521 & n400); n626 = (n527 ^ n364) ^ n408; n627 = (n527 & n364) | (n364 & n408) | (n527 & n408); n632 = (n532 ^ n370) ^ n414; n633 = (n532 & n370) | (n370 & n414) | (n532 & n414); n640 = n376 & n420; n641 = n376 & n420; n646 = n376 ^ n420; n652 = n345 ^ n547; n653 = n345 & n547; n658 = n558 ^ n553; n659 = n558 & n553; n664 = (n564 ^ n559) ^ n489; n665 = (n564 & n559) | (n559 & n489) | (n564 & n489); n670 = (n570 ^ n565) ^ n596; n671 = (n570 & n565) | (n565 & n596) | (n570 & n596); n676 = (n576 ^ n571) ^ n602; n677 = (n576 & n571) | (n571 & n602) | (n576 & n602); n684 = (n582 ^ n577) ^ n608; n685 = (n582 & n577) | (n577 & n608) | (n582 & n608); n690 = (n588 ^ n583) ^ n614; n691 = (n588 & n583) | (n583 & n614) | (n588 & n614); n696 = (n526 ^ n589) ^ n620; n697 = (n526 & n589) | (n589 & n620) | (n526 & n620); n702 = n538 & n626; n708 = n538 ^ n626; n714 = n326 & n632; n720 = n326 ^ n632; n726 = n658 ^ n653; n727 = n658 & n653; n734 = n664 ^ n659; n735 = n664 & n659; n740 = n670 ^ n665; n741 = n670 & n665; n746 = (n676 ^ n671) ^ n597; n747 = (n676 & n671) | (n671 & n597) | (n676 & n597); n752 = (n684 ^ n677) ^ n603; n753 = (n684 & n677) | (n677 & n603) | (n684 & n603); n758 = (n690 ^ n685) ^ n609; n759 = (n690 & n685) | (n685 & n609) | (n690 & n609); n764 = (n696 ^ n691) ^ n615; n765 = (n696 & n691) | (n691 & n615) | (n696 & n615); n770 = (n708 ^ n697) ^ n621; n771 = (n708 & n697) | (n697 & n621) | (n708 & n621); n778 = (n720 ^ n702) ^ n627; n779 = (n720 & n702) | (n702 & n627) | (n720 & n627); n784 = (n646 ^ n714) ^ n633; n785 = (n646 & n714) | (n714 & n633) | (n646 & n633); n796 = n426 ^ n640; n802 = n734 ^ n727; n803 = n734 & n727; n808 = n740 ^ n735; n809 = n740 & n735; n814 = n746 ^ n741; n815 = n746 & n741; n820 = n752 ^ n747; n821 = n752 & n747; n828 = n758 ^ n753; n829 = n758 & n753; n834 = n764 ^ n759; n835 = n764 & n759; n840 = n770 ^ n765; n841 = n770 & n765; n846 = n778 ^ n771; n847 = n778 & n771; n852 = n784 ^ n779; n853 = n784 & n779; n858 = n796 ^ n785; n859 = n796 & n785; n916 = n808 & n803; n922 = n809 | n916; n946 = n814 & n916; n952 = n409 & n809; n958 = n815 | n952; n966 = n958 | n946; n996 = n820 & n966; n1010 = n821; n1016 = n996; n1022 = n1010 | n1016; n1035 = n828 & n1016; n1066 = n1035; n1072 = n828 & n821; n1078 = n829 | n1072; n1084 = n1066; n1090 = n1078 | n1084; n1096 = n1090; n1105 = n834; n1140 = n1105 & n530; n1154 = n834 & n1072; n1160 = n834 & n829; n1166 = n835 | n1160; n1172 = n1154; n1178 = n1140; n1184 = n1166 | n1172; n1190 = n1184 | n1178; n1204 = n840 & n834; n1205 = n840 & n834; n1243 = n1204 & n1140; n1254 = n1204 & n1072; n1260 = n1205 & n1160; n1266 = n840 & n835; n1272 = n841 | n1266; n1278 = n1260 ^ n1254; n1292 = n1272 | n1278; n1298 = n1243; n1304 = n1292 | n1298; n1310 = n846 & n840; n1355 = n846 & n1204; n1366 = n1355 & n1298; n1372 = n846 & n1254; n1378 = n1310 & n1160; n1386 = n846 & n1266; n1392 = n846 & n841; n1398 = n847 | n1392; n1404 = n1386 | n1378; n1410 = n1372 | n1366; n1422 = n1398 | n1404; n1430 = n1410; n1436 = n1422 | n1430; n1454 = n852 & n846; n1504 = n852 & n1310; n1505 = n852 & n1310; n1510 = n1504 & n1366; n1516 = n1454 & n1254; n1524 = n1505 & n1378; n1530 = n1454 & n1266; n1536 = n852 & n1392; n1542 = n852 & n847; n1548 = n853 | n1542; n1554 = n1536 | n1530; n1561 = n1524 | n1516; n1568 = n1510; n1574 = n1548 | n1554; n1580 = n1561 | n1568; n1586 = n1574 | n1580; n1592 = n1586; n1598 = n858 & n852; n1668 = n1598 & n1366; n1674 = n1668; n1680 = n858 & n1454; n1681 = n858 & n1454; n1686 = n1680 & n1516; n1692 = n1681 & n1378; n1698 = n1681 & n1530; n1704 = n1681 & n1392; n1712 = n858 & n1542; n1718 = n858 & n853; n1724 = n859 | n1718; n1730 = n1712 | n1704; n1736 = n1698 | n1692; n1742 = n1686 | n1674; n1756 = n1724 | n1730; n1762 = n1736 | n1742; n1768 = n1756 | n1762; n1774 = n1768; n1968 = n808 ^ n803; n1974 = n814 | n922; n1980 = n820 ^ n966; n1988 = n828 ^ n1022; n1994 = n834 ^ n1096; n2000 = n840 ^ n1190; n2006 = n846 ^ n1304; n2012 = n852 ^ n1436; n2018 = n858 ^ n1592; n2024 = n641 | n1774; c |= (n32 & 0x1) << 0; c |= (n432 & 0x1) << 1; c |= (n546 & 0x1) << 2; c |= (n652 & 0x1) << 3; c |= (n726 & 0x1) << 4; c |= (n802 & 0x1) << 5; c |= (n1968 & 0x1) << 6; c |= (n1974 & 0x1) << 7; c |= (n1980 & 0x1) << 8; c |= (n1988 & 0x1) << 9; c |= (n1994 & 0x1) << 10; c |= (n2000 & 0x1) << 11; c |= (n2006 & 0x1) << 12; c |= (n2012 & 0x1) << 13; c |= (n2018 & 0x1) << 14; c |= (n2024 & 0x1) << 15; return c; }