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add8_435.c
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139 lines (134 loc) · 3.2 KB
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/***
* 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 <stdint.h>
#include <stdlib.h>
/// Approximate function add8_435
/// Library = EvoApprox8b
/// Circuit = add8_435
/// Area (180) = 1392
/// Delay (180) = 0.850
/// Power (180) = 389.80
/// Area (45) = 99
/// Delay (45) = 0.360
/// Power (45) = 30.81
/// Nodes = 35
/// HD = 184704
/// MAE = 4.75391
/// MSE = 36.50000
/// MRE = 2.48 %
/// WCE = 15
/// WCRE = 400 %
/// EP = 92.4 %
uint16_t add8_435(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 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 n45;
uint8_t n46;
uint8_t n48;
uint8_t n49;
uint8_t n54;
uint8_t n68;
uint8_t n70;
uint8_t n72;
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 n104;
uint8_t n134;
uint8_t n137;
uint8_t n143;
uint8_t n152;
uint8_t n153;
uint8_t n160;
uint8_t n163;
uint8_t n165;
uint8_t n171;
uint8_t n177;
uint8_t n180;
uint8_t n207;
uint8_t n226;
uint8_t n245;
uint8_t n254;
uint8_t n272;
uint8_t n345;
uint8_t n348;
uint8_t n377;
uint8_t n394;
uint8_t n404;
uint8_t n412;
uint8_t n413;
uint8_t n422;
n43 = n28 | n12;
n45 = n28 | n12;
n46 = n26 & n10;
n48 = ~(n24 | n8 | n6);
n49 = ~(n24 | n8 | n6);
n54 = ~(n6 | n20);
n68 = n8 & n24;
n70 = n68;
n72 = n24 ^ n8;
n73 = n24 & n8;
n78 = n10 ^ n26;
n79 = n10 & n26;
n81 = n79;
n86 = n12 ^ n28;
n87 = n12 & n28;
n96 = n14 ^ n30;
n97 = n14 & n30;
n104 = n70 & n54;
n134 = n26 | n10;
n137 = n134;
n143 = n87;
n152 = n70;
n153 = n70;
n160 = n96;
n163 = n43 & n46;
n165 = n160;
n171 = n45 & n137;
n177 = ~(n49 | n104);
n180 = n143 | n163;
n207 = n137;
n226 = n207 & n152;
n245 = n81 | n226;
n254 = n171 & n153;
n272 = n180 | n254;
n345 = n48 | n72;
n348 = n272;
n377 = n165;
n394 = n78 ^ n73;
n404 = n86 ^ n245;
n412 = n377 ^ n348;
n413 = n377 & n348;
n422 = n97 | n413;
c |= (n20 & 0x1) << 0;
c |= (n4 & 0x1) << 1;
c |= (n345 & 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;
}