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 30813-28f64e5615) Lines: 1336 1642 81.4 % Date: 2026-04-14 09:26:12 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
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	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	93773
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244385
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412416
rotateG	443224
ZM_is_knapsack	606605
ZM_flatter_rank	624849
fplll_flatter	625810
ZM_flatter	626863
dperotate	652348
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771775
dpe_muluz	799873
get_gramschmidt	1099281
realdotproduct	1183370
ZM_is_lower	1205496
lll	1243426
potential	1347040
drop	1347041
flat	1347042
sizered	1347042
affii_or_copy_gc	1390413
dpe_abssmall	1390426
submulshift	1499787
fplll_dpe	1603916
dpe_addz	1943121
vectail_inplace	2091114
fplll_fast	2104671
lll_finish	2165272
dbldotsquare	2482526
gramschmidt_dynprec	2694082
cget_dpemat	3207817
affdbldpe	3207829
addmuliu2n	4087305
mpabscmp	4096811
submuliu2n	4173584
ZM_is_upper	4236772
addmulziu	4580720
Babai_dpe	4656344
GS_extraprec	4727378
condition_bound	4727378
ZM2_lll_norms	4848161
gsisinv	5195558
dpe_cmpmul	5264622
dpe_cmp	5264627
lllfp	5371315
spread	5853054
submulziu	5923348
ZM_lll_norms	7138055
nbits2prec64	7492583
cget_dblmat	8418659
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10769208
rotateG_fast	11517602
update_alpha	11960966
cget_dpevec	13301226
dpe_divz	14078819
dpe_abscmp	14519233
setG2_fast	16987007
addzi	17783204
subzi	18524880
u64toi	19876486
affidpe	20757096
setG_fast	22618054
set_line	24889434
affdpe	25733534
Babai_fast	30146992
rotate	31877295
dblrotate	34552783
cget_dblvec	35000114
dpe_normalize	48114092
dpe_submulz	51705102
dpe_subz	53736165
dpe_mulz	56969577
dpe_normalize0	108576816
dbldotproduct	118035527
itodbl_exp	162307182

Generated by: LCOV version 1.16