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 30838-aa3635ec72) Lines: 1336 1642 81.4 % Date: 2026-04-28 09:25:50 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
dpeM_diagonal_shallow	1547
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
dpetor	23604
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44538
RgM_is_square_mat	45828
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244391
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412417
rotateG	443223
ZM_is_knapsack	606599
ZM_flatter_rank	624824
fplll_flatter	625785
ZM_flatter	626838
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771770
dpe_muluz	799874
get_gramschmidt	1099238
realdotproduct	1183370
ZM_is_lower	1205454
lll	1243426
flat	1346901
drop	1346902
potential	1346902
sizered	1346903
affii_or_copy_gc	1390377
dpe_abssmall	1390416
submulshift	1499787
fplll_dpe	1603866
dpe_addz	1943114
vectail_inplace	2091067
fplll_fast	2104621
lll_finish	2165231
dbldotsquare	2482301
gramschmidt_dynprec	2693802
affdbldpe	3207731
cget_dpemat	3207740
addmuliu2n	4087044
mpabscmp	4096387
submuliu2n	4173300
ZM_is_upper	4236446
addmulziu	4580622
Babai_dpe	4656208
GS_extraprec	4726979
condition_bound	4726979
ZM2_lll_norms	4847707
gsisinv	5195146
dpe_cmpmul	5264507
dpe_cmp	5264511
lllfp	5370908
spread	5852641
submulziu	5923105
ZM_lll_norms	7137550
nbits2prec64	7491920
cget_dblmat	8418461
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10769047
rotateG_fast	11517270
update_alpha	11960644
cget_dpevec	13300505
dpe_divz	14078532
dpe_abscmp	14518998
setG2_fast	16986601
addzi	17782413
subzi	18524076
u64toi	19876486
affidpe	20756431
setG_fast	22617119
set_line	24888647
affdpe	25733166
Babai_fast	30146446
rotate	31876396
dblrotate	34551760
cget_dblvec	34998541
dpe_normalize	48113161
dpe_submulz	51704248
dpe_subz	53735297
dpe_mulz	56968558
dpe_normalize0	108574463
dbldotproduct	118032556
itodbl_exp	162300441

Generated by: LCOV version 1.16