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) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30561-4f4869c0e7) Lines: 1335 1641 81.4 % Date: 2025-11-28 09:21:39 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
RgM_flop	0
dbg_flatter	0
dbg_flattergram	0
fplll	0
matkerint0	28
lllgramkerim	35
lllkerim	35
kerint	42
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
qflllgram	63
kerint0	70
incrementalGSgen	168
lllallgen	168
lllgramallgen	168
lllint	183
REDgen	196
do_SWAPgen	196
qflllgram0	245
qflll0	301
pslg	504
ZM_flattergram	961
ZM_flattergram_rank	961
gramschmidt_upper	1336
RgM_Cholesky_dynprec	2967
flattergram_i	2967
ZM_to_RM	4246
fplll_heuristic	4246
gc_lll	4835
lllgram	9089
truncexpo	12139
ZC_to_RC	15952
dpeM_diagonal_shallow	20287
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44559
RgM_is_square_mat	45828
dpetor	94267
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244446
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	318943
dpe_addmuluz	342910
absrsmall2	402705
dpe_submuluz	412454
rotateG	443710
ZM_is_knapsack	606715
ZM_flatter_rank	624494
fplll_flatter	625455
ZM_flatter	626508
dperotate	652460
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	698128
lll_trivial	771732
dpe_muluz	799914
get_gramschmidt	1098384
realdotproduct	1186355
ZM_is_lower	1204562
lll	1243329
potential	1346027
drop	1346028
flat	1346028
sizered	1346028
affii_or_copy_gc	1390599
dpe_abssmall	1390608
submulshift	1507251
fplll_dpe	1603195
dpe_addz	1943188
vectail_inplace	2090409
fplll_fast	2103931
lll_finish	2164635
dbldotsquare	2480995
gramschmidt_dynprec	2692051
cget_dpemat	3206387
affdbldpe	3206388
mpabscmp	4093762
addmuliu2n	4105045
submuliu2n	4197568
ZM_is_upper	4233930
addmulziu	4580848
Babai_dpe	4654309
GS_extraprec	4725065
condition_bound	4725065
ZM2_lll_norms	4843621
gsisinv	5192701
dpe_cmpmul	5262520
dpe_cmp	5262524
lllfp	5368237
spread	5850332
submulziu	5923680
ZM_lll_norms	7132902
nbits2prec64	7487112
cget_dblmat	8415712
addmuliu64_inplace	9581970
submuliu64_inplace	9632820
pari_rint	10796699
rotateG_fast	11547241
update_alpha	11991063
cget_dpevec	13293271
dpe_divz	14075530
dpe_abscmp	14516029
setG2_fast	17029214
addzi	17783863
subzi	18525340
u64toi	19902261
affidpe	20750279
setG_fast	22658772
set_line	24929531
affdpe	25731767
Babai_fast	30203495
rotate	31936131
dblrotate	34641665
cget_dblvec	34984053
dpe_normalize	48109585
dpe_submulz	51703355
dpe_subz	53734525
dpe_mulz	56965711
dpe_normalize0	108563394
dbldotproduct	118230485
itodbl_exp	162619511

Generated by: LCOV version 1.16