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 30748-2ce22a5f1f) Lines: 1336 1642 81.4 % Date: 2026-03-18 09:25:54 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	4244
fplll_heuristic	4244
gc_lll	4833
lllgram	9089
truncexpo	12138
ZC_to_RC	15945
dpeM_diagonal_shallow	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244391
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342905
absrsmall2	401466
dpe_submuluz	412418
rotateG	443223
ZM_is_knapsack	606611
ZM_flatter_rank	624826
fplll_flatter	625787
ZM_flatter	626840
dperotate	652349
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771773
dpe_muluz	799872
get_gramschmidt	1099268
realdotproduct	1183370
ZM_is_lower	1205494
lll	1243426
drop	1346934
flat	1346935
potential	1346935
sizered	1346935
affii_or_copy_gc	1390405
dpe_abssmall	1390415
submulshift	1499787
fplll_dpe	1603902
dpe_addz	1943121
vectail_inplace	2091105
fplll_fast	2104675
lll_finish	2165282
dbldotsquare	2482602
gramschmidt_dynprec	2693868
affdbldpe	3207800
cget_dpemat	3207809
addmuliu2n	4083784
mpabscmp	4096402
submuliu2n	4168623
ZM_is_upper	4236555
addmulziu	4580716
Babai_dpe	4656260
GS_extraprec	4727028
condition_bound	4727028
ZM2_lll_norms	4847805
gsisinv	5195220
dpe_cmpmul	5264547
dpe_cmp	5264555
lllfp	5371005
spread	5852729
submulziu	5923307
ZM_lll_norms	7137727
nbits2prec64	7492131
cget_dblmat	8418679
addmuliu64_inplace	9567325
submuliu64_inplace	9625851
pari_rint	10770203
rotateG_fast	11516784
update_alpha	11960086
cget_dpevec	13301242
dpe_divz	14078416
dpe_abscmp	14518857
setG2_fast	16985849
addzi	17783100
subzi	18524746
u64toi	19876621
affidpe	20756715
setG_fast	22616859
set_line	24888909
affdpe	25733300
Babai_fast	30144646
rotate	31874754
dblrotate	34550342
cget_dblvec	34999659
dpe_normalize	48111878
dpe_submulz	51703041
dpe_subz	53734218
dpe_mulz	56967461
dpe_normalize0	108571998
dbldotproduct	118025310
itodbl_exp	162323730

Generated by: LCOV version 1.16