-
Notifications
You must be signed in to change notification settings - Fork 8
/
add16u_0AP.c
105 lines (104 loc) · 3.33 KB
/
add16u_0AP.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
/***
* 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): PRABAKARAN B. S., MRAZEK V., VASICEK Z., SEKANINA L., SHAFIQUE M. ApproxFPGAs: Embracing ASIC-based Approximate Arithmetic Components for FPGA-Based Systems. DAC 2020.
***/
// MAE% = 0.20 %
// MAE = 262
// WCE% = 0.53 %
// WCE = 701
// WCRE% = 100.00 %
// EP% = 99.93 %
// MRE% = 0.55 %
// MSE = 90152
// FPGA_POWER = 0.35
// FPGA_DELAY = 7.6
// FPGA_LUT = 7.0
#include <stdint.h>
#include <stdlib.h>
uint64_t add16u_0AP(uint64_t a, uint64_t b) {
int wa[16];
int wb[16];
uint64_t y = 0;
wa[0] = (a >> 0) & 0x01;
wb[0] = (b >> 0) & 0x01;
wa[1] = (a >> 1) & 0x01;
wb[1] = (b >> 1) & 0x01;
wa[2] = (a >> 2) & 0x01;
wb[2] = (b >> 2) & 0x01;
wa[3] = (a >> 3) & 0x01;
wb[3] = (b >> 3) & 0x01;
wa[4] = (a >> 4) & 0x01;
wb[4] = (b >> 4) & 0x01;
wa[5] = (a >> 5) & 0x01;
wb[5] = (b >> 5) & 0x01;
wa[6] = (a >> 6) & 0x01;
wb[6] = (b >> 6) & 0x01;
wa[7] = (a >> 7) & 0x01;
wb[7] = (b >> 7) & 0x01;
wa[8] = (a >> 8) & 0x01;
wb[8] = (b >> 8) & 0x01;
wa[9] = (a >> 9) & 0x01;
wb[9] = (b >> 9) & 0x01;
wa[10] = (a >> 10) & 0x01;
wb[10] = (b >> 10) & 0x01;
wa[11] = (a >> 11) & 0x01;
wb[11] = (b >> 11) & 0x01;
wa[12] = (a >> 12) & 0x01;
wb[12] = (b >> 12) & 0x01;
wa[13] = (a >> 13) & 0x01;
wb[13] = (b >> 13) & 0x01;
wa[14] = (a >> 14) & 0x01;
wb[14] = (b >> 14) & 0x01;
wa[15] = (a >> 15) & 0x01;
wb[15] = (b >> 15) & 0x01;
int sig_33 = 0;
int sig_78 = wa[9] | wb[9];
int sig_79 = wa[10] ^ wb[10];
int sig_80 = wa[10] & wb[10];
int sig_81 = sig_79 & sig_78;
int sig_82 = sig_79 ^ sig_78;
int sig_83 = sig_80 | sig_81;
int sig_84 = wa[11] ^ wb[11];
int sig_85 = wa[11] & wb[11];
int sig_86 = sig_84 & sig_83;
int sig_87 = sig_84 ^ sig_83;
int sig_88 = sig_85 | sig_86;
int sig_89 = wa[12] ^ wb[12];
int sig_90 = wa[12] & wb[12];
int sig_91 = sig_89 & sig_88;
int sig_92 = sig_89 ^ sig_88;
int sig_93 = sig_90 | sig_91;
int sig_94 = wa[13] ^ wb[13];
int sig_95 = wa[13] & wb[13];
int sig_96 = sig_94 & sig_93;
int sig_97 = sig_94 ^ sig_93;
int sig_98 = sig_95 | sig_96;
int sig_99 = wa[14] ^ wb[14];
int sig_100 = wa[14] & wb[14];
int sig_101 = sig_99 & sig_98;
int sig_102 = sig_99 ^ sig_98;
int sig_103 = sig_100 | sig_101;
int sig_104 = wa[15] ^ wb[15];
int sig_105 = wa[15] & wb[15];
int sig_106 = sig_104 & sig_103;
int sig_107 = sig_104 ^ sig_103;
int sig_108 = sig_105 | sig_106;
y |= (wa[1] & 0x01) << 0; // default output
y |= (sig_33 & 0x01) << 1; // default output
y |= (sig_33 & 0x01) << 2; // default output
y |= (sig_92 & 0x01) << 3; // default output
y |= (sig_33 & 0x01) << 4; // default output
y |= (wa[10] & 0x01) << 5; // default output
y |= (wa[8] & 0x01) << 6; // default output
y |= (wa[13] & 0x01) << 7; // default output
y |= (wb[8] & 0x01) << 8; // default output
y |= (sig_33 & 0x01) << 9; // default output
y |= (sig_82 & 0x01) << 10; // default output
y |= (sig_87 & 0x01) << 11; // default output
y |= (sig_92 & 0x01) << 12; // default output
y |= (sig_97 & 0x01) << 13; // default output
y |= (sig_102 & 0x01) << 14; // default output
y |= (sig_107 & 0x01) << 15; // default output
y |= (sig_108 & 0x01) << 16; // default output
return y;
}