/*** * 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 add8_008 /// Library = EvoApprox8b /// Circuit = add8_008 /// Area (180) = 1192 /// Delay (180) = 0.770 /// Power (180) = 330.40 /// Area (45) = 84 /// Delay (45) = 0.330 /// Power (45) = 26.27 /// Nodes = 30 /// HD = 188032 /// MAE = 6.92969 /// MSE = 68.00000 /// MRE = 3.61 % /// WCE = 18 /// WCRE = 100 % /// EP = 96.9 % uint16_t add8_008(uint8_t a, uint8_t b) { uint16_t c = 0; 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 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 n43; uint8_t n44; uint8_t n46; uint8_t n49; uint8_t n68; uint8_t n73; uint8_t n78; uint8_t n79; uint8_t n81; uint8_t n86; uint8_t n87; uint8_t n96; uint8_t n97; uint8_t n129; uint8_t n135; uint8_t n137; uint8_t n143; uint8_t n153; uint8_t n160; uint8_t n162; uint8_t n170; uint8_t n177; uint8_t n181; uint8_t n209; uint8_t n226; uint8_t n245; uint8_t n254; uint8_t n272; uint8_t n377; uint8_t n394; uint8_t n404; uint8_t n412; uint8_t n413; uint8_t n422; n43 = n28 | n12; n44 = n28 | n12; n46 = n26 & n10; n49 = ~(n24 | n8 | n6); n68 = n8 & n24; n73 = n24 & n8; n78 = n10 ^ n26; n79 = n10 & n26; n81 = n79; n86 = n12 ^ n28; n87 = n12 & n28; n96 = n14 ^ n30; n97 = n14 & n30; n129 = n44; n135 = n26 | n10; n137 = n135; n143 = n87; n153 = n68; n160 = n96; n162 = n43 & n46; n170 = n129; n177 = ~n49; n181 = n143 | n162; n209 = n181; n226 = n137 & n153; n245 = n81 | n226; n254 = n170 & n226; n272 = n209 | n254; n377 = n160; n394 = n78 ^ n73; n404 = n86 ^ n245; n412 = n377 ^ n272; n413 = n377 & n272; n422 = n97 | n413; c |= (n4 & 0x1) << 0; c |= (n20 & 0x1) << 1; c |= (n2 & 0x1) << 2; c |= (n22 & 0x1) << 3; c |= (n177 & 0x1) << 4; c |= (n394 & 0x1) << 5; c |= (n404 & 0x1) << 6; c |= (n412 & 0x1) << 7; c |= (n422 & 0x1) << 8; return c; }