/*** * 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_HigherValencyTreeAdder_With_SklanskyArchitecture /// Library = EvoApprox8b /// Circuit = add8_HVTA_wt_SA /// Area (180) = 1984 /// Delay (180) = 1.240 /// Power (180) = 779.10 /// Area (45) = 138 /// Delay (45) = 0.480 /// Power (45) = 63.72 /// Nodes = 44 /// HD = 0 /// MAE = 0.00000 /// MSE = 0.00000 /// MRE = 0.00 % /// WCE = 0 /// WCRE = 0 % /// EP = 0.0 % uint16_t add8_HigherValencyTreeAdder_With_SklanskyArchitecture(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 n34; uint8_t n35; uint8_t n36; uint8_t n37; uint8_t n38; uint8_t n39; uint8_t n40; uint8_t n41; uint8_t n42; uint8_t n43; uint8_t n44; uint8_t n45; uint8_t n46; uint8_t n47; uint8_t n48; uint8_t n50; uint8_t n52; uint8_t n54; uint8_t n56; uint8_t n58; uint8_t n60; uint8_t n62; uint8_t n64; uint8_t n66; uint8_t n68; uint8_t n70; uint8_t n72; uint8_t n74; uint8_t n76; uint8_t n78; uint8_t n80; uint8_t n82; uint8_t n84; uint8_t n86; uint8_t n88; uint8_t n90; uint8_t n92; uint8_t n94; uint8_t n96; uint8_t n98; uint8_t n100; uint8_t n102; uint8_t n104; uint8_t n106; uint8_t n108; uint8_t n110; uint8_t n112; uint8_t n114; uint8_t n116; uint8_t n117; uint8_t n118; n32 = n0 ^ n16; n33 = n0 & n16; n34 = n2 ^ n18; n35 = n2 & n18; n36 = n4 ^ n20; n37 = n4 & n20; n38 = n6 ^ n22; n39 = n6 & n22; n40 = n8 ^ n24; n41 = n8 & n24; n42 = n10 ^ n26; n43 = n10 & n26; n44 = n12 ^ n28; n45 = n12 & n28; n46 = n14 ^ n30; n47 = n14 & n30; n48 = n33 & n34; n50 = n48 | n35; n52 = n37 & n38; n54 = n52 | n39; n56 = n36 & n38; n58 = n37 & n38; n60 = n58 | n39; n62 = n60 & n40; n64 = n62 | n41; n66 = n36 & n38; n68 = n66 & n40; n70 = n43 & n44; n72 = n70 | n45; n74 = n42 & n44; n76 = n50 & n36; n78 = n76 | n37; n80 = n50 & n56; n82 = n80 | n54; n84 = n50 & n68; n86 = n84 | n64; n88 = n50 & n68; n90 = n88 | n64; n92 = n90 & n42; n94 = n92 | n43; n96 = n50 & n68; n98 = n96 | n64; n100 = n98 & n74; n102 = n100 | n72; n104 = n34 ^ n33; n106 = n36 ^ n50; n108 = n38 ^ n78; n110 = n40 ^ n82; n112 = n42 ^ n86; n114 = n44 ^ n94; n116 = n46 ^ n102; n117 = n46 & n102; n118 = n47 | n117; c |= (n32 & 0x1) << 0; c |= (n104 & 0x1) << 1; c |= (n106 & 0x1) << 2; c |= (n108 & 0x1) << 3; c |= (n110 & 0x1) << 4; c |= (n112 & 0x1) << 5; c |= (n114 & 0x1) << 6; c |= (n116 & 0x1) << 7; c |= (n118 & 0x1) << 8; return c; }