Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - lll.c (source / functions) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31041-bd73e9fcdd) Lines: 81.3 % 1643 1335 Test Date: 2026-07-22 22:45:42 Functions: 96.2 % 131 126 Legend: Lines:     hit not hit

Function Name	Hit count
Babai	0
RgM_flop	0
dbg_flatter	0
dbg_flattergram	0
fplll	0
kerint	28
matkerint0	28
lllgramkerim	35
lllkerim	35
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
kerint0	56
qflllgram	63
incrementalGSgen	168
lllallgen	168
lllgramallgen	168
lllint	183
REDgen	196
do_SWAPgen	196
qflllgram0	245
qflll0	301
pslg	504
ZM_flattergram	968
ZM_flattergram_rank	968
gramschmidt_upper	1402
dpeM_diagonal_shallow	1694
RgM_Cholesky_dynprec	2988
flattergram_i	2988
ZM_to_RM	4692
fplll_heuristic	4692
gc_lll	5446
lllgram	9089
ZC_to_RC	22240
truncexpo	24411
dpetor	25844
RgM_flip	34939
lllgramint	36439
lllall	36699
get_cholesky	44545
RgM_is_square_mat	45828
thsn	92852
setG2_heuristic	194933
realsqrdotproduct	207602
setG_heuristic	217683
Babai_heuristic	301906
dpe_negz	366289
absrsmall2	441842
rotateG	478734
ZM_is_knapsack	607635
ZM_flatter_rank	625237
fplll_flatter	626205
ZM_flatter	627251
dperotate	716308
addmuliu642n	726330
u64toineg	726330
submuliu642n	744684
absrsmall	761350
lll_trivial	771840
mulshift	933199
thre	1033896
get_gramschmidt	1099639
ZM_is_lower	1205554
lll	1244992
realdotproduct	1288707
dpe_addmuluz	1323853
drop	1347794
sizered	1347794
flat	1347795
potential	1347795
dpe_submuluz	1410109
fplll_dpe	1605192
submulshift	2066712
vectail_inplace	2093502
fplll_fast	2107497
affii_or_copy_gc	2162070
dpe_abssmall	2162072
lll_finish	2168120
dbldotsquare	2485132
gramschmidt_dynprec	2695589
cget_dpemat	3210382
affdbldpe	3210383
mpabscmp	4109277
ZM_is_upper	4239494
addmuliu2n	4636975
submuliu2n	4711408
GS_extraprec	4729081
condition_bound	4729081
Babai_dpe	4762189
ZM2_lll_norms	4851232
lllfp	5375618
dpe_cmp	5469665
dpe_cmpmul	5469665
spread	5855819
dpe_addz	6613218
ZM_lll_norms	7144011
nbits2prec64	7496370
cget_dblmat	8429967
dpe_muluz	8621596
addmuliu64_inplace	10599145
submuliu64_inplace	10652343
addmulziu	10701477
pari_rint	11638271
rotateG_fast	11957553
submulziu	12094680
update_alpha	12436436
cget_dpevec	13316045
dpe_divz	15577366
dpe_abscmp	15746224
submulzu2n	16768355
addmulzu2n	16967395
setG2_fast	17608335
u64toi	21996172
affidpe	22362641
setG_fast	23261701
set_line	25539291
Babai_fast	31669935
addzi	32044909
subzi	32808453
affdpe	33062178
rotate	33250277
cget_dblvec	35108348
dblrotate	35872665
dpe_submulz	69114543
dpe_mulz	74584047
dpe_subz	75766161
dpe_normalize	76718505
dbldotproduct	129115991
dpe_normalize0	151965959
itodbl_exp	176821030

Generated by: LCOV version 2.0-1