openai / retro - Duplication

Intro

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

Learn more...

Duplication Overall

24% duplication:

294,164 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
71,765 duplicated lines

64,109 duplicates

dependency graphs: 2D graph | 3D graph | 3D graph (with duplicates)...

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

Download: SVG DOT (open online Graphviz editor)

From Component --> To Component	Duplicated Lines	File Pairs	Details
cores (<1%) --> src (25%)	3995	39 file pairs	details...

Open 2D force graph... Open 3D force graph...

Show more details on duplication between components...

Longest Duplicates

The list of 50 longest duplicates.

See data for all 64,109 duplicates...

Size	#	Folders	Files	Lines	Code
1025	x 2	cores/genesis/core/tremor cores/pce/mednafen/tremor	window_lookup.h window_lookup.h	1059:2083 (49%) 1059:2083 (49%)	view
750	x 2	cores/genesis/gcw0 cores/genesis/psp2	unzip.c unzip.c	20:1293 (100%) 20:1293 (100%)	view
750	x 2	cores/genesis/psp2 cores/genesis/sdl	unzip.c unzip.c	20:1293 (100%) 20:1293 (100%)	view
750	x 2	cores/genesis/gcw0 cores/genesis/sdl	unzip.c unzip.c	20:1293 (100%) 20:1293 (100%)	view
513	x 2	cores/genesis/core/tremor cores/pce/mednafen/tremor	window_lookup.h window_lookup.h	544:1056 (24%) 544:1056 (24%)	view
490	x 2	cores/atari2600 cores/pce	libretro.h libretro.h	31:2160 (100%) 31:2160 (100%)	view
488	x 2	cores/genesis/libretro src	libretro.h libretro.h	31:2154 (100%) 31:2122 (100%)	view
488	x 2	cores/gba/src/platform/libretro cores/genesis/libretro	libretro.h libretro.h	31:2122 (100%) 31:2154 (100%)	view
488	x 2	cores/gba/src/platform/libretro src	libretro.h libretro.h	31:2122 (100%) 31:2122 (100%)	view
480	x 2	cores/gb/libgambatte/libretro cores/nes/src/drivers/libretro	libretro.h libretro.h	31:2070 (100%) 31:2057 (100%)	view
472	x 2	cores/snes/libretro src	libretro.h libretro.h	248:2157 (96%) 247:2122 (96%)	view
472	x 2	cores/atari2600 src	libretro.h libretro.h	249:2160 (96%) 247:2122 (96%)	view
472	x 2	cores/genesis/libretro cores/snes/libretro	libretro.h libretro.h	247:2154 (96%) 248:2157 (96%)	view
472	x 2	cores/gba/src/platform/libretro cores/snes/libretro	libretro.h libretro.h	247:2122 (96%) 248:2157 (96%)	view
472	x 2	cores/pce cores/snes/libretro	libretro.h libretro.h	249:2160 (96%) 248:2157 (96%)	view
472	x 2	cores/pce src	libretro.h libretro.h	249:2160 (96%) 247:2122 (96%)	view
472	x 2	cores/atari2600 cores/snes/libretro	libretro.h libretro.h	249:2160 (96%) 248:2157 (96%)	view
472	x 2	cores/atari2600 cores/genesis/libretro	libretro.h libretro.h	249:2160 (96%) 247:2154 (96%)	view
472	x 2	cores/atari2600 cores/gba/src/platform/libretro	libretro.h libretro.h	249:2160 (96%) 247:2122 (96%)	view
472	x 2	cores/gba/src/platform/libretro cores/pce	libretro.h libretro.h	247:2122 (96%) 249:2160 (96%)	view
472	x 2	cores/genesis/libretro cores/pce	libretro.h libretro.h	247:2154 (96%) 249:2160 (96%)	view
439	x 2	cores/genesis/libretro/l...o-common/include/compat cores/pce/libretro-common/include/compat	in zconf.h.in zconf.h.in	1:483 (100%) 1:483 (100%)	view
354	x 2	cores/genesis/core/tremor cores/pce/mednafen/tremor	mdct.c mdct.c	43:507 (100%) 43:507 (100%)	view
301	x 2	cores/gb/libgambatte/libretro-common/streams cores/genesis/libretro/libretro-common/streams	file_stream.c file_stream.c	68:659 (100%) 68:659 (100%)	view
301	x 2	cores/gb/libgambatte/libretro-common/streams cores/pce/libretro-common/streams	file_stream.c file_stream.c	68:659 (100%) 68:659 (100%)	view
301	x 2	cores/genesis/libretro/libretro-common/streams cores/pce/libretro-common/streams	file_stream.c file_stream.c	68:659 (100%) 68:659 (100%)	view
263	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68ki_cycles.h m68ki_cycles.h	2300:2562 (6%) 3324:3586 (6%)	view
263	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	s68ki_cycles.h s68ki_cycles.h	2300:2562 (6%) 3324:3586 (6%)	view
258	x 2	cores/genesis/core/tremor cores/pce/mednafen/tremor	mdct_lookup.h mdct_lookup.h	22:279 (49%) 22:279 (49%)	view
257	x 2	cores/genesis/core/tremor cores/pce/mednafen/tremor	mdct_lookup.h mdct_lookup.h	283:539 (49%) 283:539 (49%)	view
257	x 2	cores/genesis/core/tremor cores/pce/mednafen/tremor	window_lookup.h window_lookup.h	285:541 (12%) 285:541 (12%)	view
228	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68ki_cycles.h m68ki_cycles.h	3075:3302 (5%) 3107:3334 (5%)	view
228	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	s68ki_cycles.h s68ki_cycles.h	2819:3046 (5%) 2851:3078 (5%)	view
228	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68ki_cycles.h m68ki_cycles.h	2819:3046 (5%) 2851:3078 (5%)	view
228	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	s68ki_cycles.h s68ki_cycles.h	3075:3302 (5%) 3107:3334 (5%)	view
228	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	s68ki_cycles.h s68ki_cycles.h	2051:2278 (5%) 2083:2310 (5%)	view
228	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68ki_cycles.h m68ki_cycles.h	2051:2278 (5%) 2083:2310 (5%)	view
224	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	s68ki_cycles.h s68ki_cycles.h	2339:2562 (5%) 3331:3554 (5%)	view
224	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68ki_cycles.h m68ki_cycles.h	2307:2530 (5%) 2339:2562 (5%)	view
224	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	s68ki_cycles.h s68ki_cycles.h	3331:3554 (5%) 3363:3586 (5%)	view
224	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68ki_cycles.h m68ki_cycles.h	3331:3554 (5%) 3363:3586 (5%)	view
224	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	s68ki_cycles.h s68ki_cycles.h	2307:2530 (5%) 3363:3586 (5%)	view
224	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68ki_cycles.h m68ki_cycles.h	2307:2530 (5%) 3363:3586 (5%)	view
224	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	s68ki_cycles.h s68ki_cycles.h	2307:2530 (5%) 2339:2562 (5%)	view
224	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68ki_cycles.h m68ki_cycles.h	2339:2562 (5%) 3331:3554 (5%)	view
211	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68ki_cycles.h m68ki_cycles.h	1296:1506 (5%) 1328:1538 (5%)	view
211	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	s68ki_cycles.h s68ki_cycles.h	1296:1506 (5%) 1328:1538 (5%)	view
196	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68ki_cycles.h m68ki_cycles.h	3075:3270 (4%) 3139:3334 (4%)	view
196	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	s68ki_cycles.h s68ki_cycles.h	2819:3014 (4%) 2883:3078 (4%)	view
196	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68ki_cycles.h m68ki_cycles.h	2819:3014 (4%) 2883:3078 (4%)	view

Duplicated Units

The list of top 50 duplicated units.

See data for all 150 unit duplicates...

Size	#	Folders	Files	Lines	Code
141	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	mdct.c mdct.c	340:509 340:509	view
140	x 3	cores/genesis/psp2 cores/genesis/sdl cores/genesis/gcw0	unzip.c unzip.c unzip.c	494:667 494:667 494:667	view
94	x 2	cores/genesis/core/ntsc cores/genesis/core/ntsc	sms_ntsc_impl.h md_ntsc_impl.h	69:193 69:193	view
94	x 3	cores/genesis/psp2 cores/genesis/sdl cores/genesis/gcw0	unzip.c unzip.c unzip.c	999:1119 999:1119 999:1119	view
87	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	mapping0.c mapping0.c	186:319 180:297	view
75	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	sharedbook.c sharedbook.c	331:446 323:438	view
65	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	mdct.c mdct.c	148:232 148:232	view
64	x 3	cores/genesis/psp2 cores/genesis/sdl cores/genesis/gcw0	unzip.c unzip.c unzip.c	807:893 807:893 807:893	view
63	x 3	cores/genesis/psp2 cores/genesis/sdl cores/genesis/gcw0	unzip.c unzip.c unzip.c	899:986 899:986 899:986	view
62	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	mdct.c mdct.c	255:338 255:338	view
60	x 2	cores/genesis/core/ntsc cores/genesis/core/ntsc	sms_ntsc_impl.h md_ntsc_impl.h	198:269 198:269	view
57	x 3	cores/genesis/psp2 cores/genesis/sdl cores/genesis/gcw0	unzip.c unzip.c unzip.c	341:431 341:431 341:431	view
43	x 3	cores/genesis/psp2 cores/genesis/sdl cores/genesis/gcw0	unzip.c unzip.c unzip.c	276:330 276:330 276:330	view
42	x 3	cores/pce/libretro-common/streams cores/gb/libgambatte/libretro-common/streams cores/genesis/libretro/libretro-common/streams	file_stream.c file_stream.c file_stream.c	349:408 349:408 349:408	view
40	x 3	cores/pce/libretro-common/streams cores/gb/libgambatte/libretro-common/streams cores/genesis/libretro/libretro-common/streams	file_stream.c file_stream.c file_stream.c	578:634 578:634 578:634	view
39	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	codebook.c codebook.c	166:215 150:199	view
39	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	codebook.c codebook.c	348:391 328:371	view
38	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68kcpu.c s68kcpu.c	80:119 92:131	view
38	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68kcpu.c s68kcpu.c	121:160 133:172	view
37	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	mdct.c mdct.c	97:145 97:145	view
35	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	misc.h misc.h	206:246 200:240	view
32	x 3	cores/genesis/psp2 cores/genesis/sdl cores/genesis/gcw0	unzip.c unzip.c unzip.c	756:797 756:797 756:797	view
31	x 3	cores/genesis/psp2 cores/genesis/sdl cores/genesis/gcw0	unzip.c unzip.c unzip.c	1176:1217 1176:1217 1176:1217	view
28	x 3	cores/pce/libretro-common/streams cores/gb/libgambatte/libretro-common/streams cores/genesis/libretro/libretro-common/streams	file_stream.c file_stream.c file_stream.c	532:566 532:566 532:566	view
28	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	codebook.c codebook.c	245:275 228:258	view
27	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	vorbisfile.c vorbisfile.c	1069:1103 834:868	view
26	x 3	cores/pce/libretro-common/streams cores/gb/libgambatte/libretro-common/streams cores/genesis/libretro/libretro-common/streams	file_stream.c file_stream.c file_stream.c	455:486 455:486 455:486	view
26	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	info.c info.c	119:155 116:152	view
24	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	block.c block.c	235:265 221:251	view
24	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	codebook.c codebook.c	278:304 260:286	view
24	x 3	cores/genesis/psp2 cores/genesis/sdl cores/genesis/gcw0	unzip.c unzip.c unzip.c	1223:1257 1223:1257 1223:1257	view
23	x 3	cores/genesis/psp2 cores/genesis/sdl cores/genesis/gcw0	unzip.c unzip.c unzip.c	1265:1294 1265:1294 1265:1294	view
22	x 2	cores/atari2600/stella/src/emucore cores/atari2600/stella/src/emucore	CartFA2.cxx CartFA.cxx	77:109 61:93	view
22	x 3	cores/atari2600/stella/src/emucore cores/atari2600/stella/src/emucore cores/atari2600/stella/src/emucore	CartF8SC.cxx CartF4SC.cxx CartF6SC.cxx	61:93 61:93 61:93	view
22	x 3	cores/atari2600/stella/src/emucore cores/atari2600/stella/src/emucore cores/atari2600/stella/src/emucore	CartBFSC.cxx CartDFSC.cxx CartEFSC.cxx	61:93 61:93 61:93	view
22	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	floor1.c floor1.c	299:325 285:311	view
22	x 2	cores/genesis/core/m68k cores/genesis/core/m68k	m68kcpu.c s68kcpu.c	332:369 296:333	view
22	x 3	cores/genesis/psp2 cores/genesis/sdl cores/genesis/gcw0	unzip.c unzip.c unzip.c	181:209 181:209 181:209	view
21	x 3	cores/pce/libretro-common/streams cores/gb/libgambatte/libretro-common/streams cores/genesis/libretro/libretro-common/streams	file_stream.c file_stream.c file_stream.c	422:448 422:448 422:448	view
21	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	info.c info.c	159:188 156:185	view
21	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	mdct.c mdct.c	66:94 66:94	view
20	x 2	cores/atari2600/stella/src/emucore cores/atari2600/stella/src/emucore	CartF6.cxx CartF6SC.cxx	98:129 146:181	view
20	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	sharedbook.c sharedbook.c	160:183 147:170	view
20	x 3	cores/genesis/psp2 cores/genesis/sdl cores/genesis/gcw0	unzip.c unzip.c unzip.c	213:234 213:234 213:234	view
19	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	asm_arm.h asm_arm.h	219:241 217:239	view
19	x 3	cores/genesis/psp2 cores/genesis/sdl cores/genesis/gcw0	unzip.c unzip.c unzip.c	723:745 723:745 723:745	view
18	x 3	cores/pce/libretro-common/streams cores/gb/libgambatte/libretro-common/streams cores/genesis/libretro/libretro-common/streams	file_stream.c file_stream.c file_stream.c	497:517 497:517 497:517	view
18	x 2	cores/pce/libretro-common/include/compat cores/genesis/libretro/l...o-common/include/compat	intrinsics.h intrinsics.h	60:81 60:81	view
17	x 2	cores/atari2600/stella/src/emucore cores/atari2600/stella/src/emucore	Cart0840.cxx CartSB.cxx	51:79 57:85	view
17	x 2	cores/pce/mednafen/tremor cores/genesis/core/tremor	mdct.c mdct.c	43:63 43:63	view