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 30851-7844d7b3a5) Lines: 1336 1642 81.4 % Date: 2026-05-02 09:26:58 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	44539
RgM_is_square_mat	45828
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244397
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412414
rotateG	443223
ZM_is_knapsack	606532
ZM_flatter_rank	624839
fplll_flatter	625800
ZM_flatter	626853
dperotate	652348
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771774
dpe_muluz	799873
get_gramschmidt	1099260
realdotproduct	1183370
ZM_is_lower	1205479
lll	1243427
drop	1346999
sizered	1347000
flat	1347001
potential	1347001
affii_or_copy_gc	1390417
dpe_abssmall	1390428
submulshift	1499787
fplll_dpe	1604031
dpe_addz	1943119
vectail_inplace	2091158
fplll_fast	2104717
lll_finish	2165324
dbldotsquare	2482570
gramschmidt_dynprec	2694000
affdbldpe	3208062
cget_dpemat	3208069
addmuliu2n	4083173
mpabscmp	4096499
submuliu2n	4168493
ZM_is_upper	4236812
addmulziu	4580751
Babai_dpe	4656365
GS_extraprec	4727190
condition_bound	4727190
ZM2_lll_norms	4848119
gsisinv	5195363
dpe_cmpmul	5264641
dpe_cmp	5264644
lllfp	5371205
spread	5852792
submulziu	5923331
ZM_lll_norms	7138054
nbits2prec64	7492378
cget_dblmat	8418852
addmuliu64_inplace	9567338
submuliu64_inplace	9625841
pari_rint	10769009
rotateG_fast	11516184
update_alpha	11959517
cget_dpevec	13301685
dpe_divz	14078385
dpe_abscmp	14518809
setG2_fast	16984827
addzi	17783030
subzi	18524734
u64toi	19876624
affidpe	20756786
setG_fast	22615532
set_line	24886894
affdpe	25732949
Babai_fast	30142911
rotate	31872508
dblrotate	34548541
cget_dblvec	34999166
dpe_normalize	48111915
dpe_submulz	51702507
dpe_subz	53733583
dpe_mulz	56966940
dpe_normalize0	108571802
dbldotproduct	118016833
itodbl_exp	162294154

Generated by: LCOV version 1.16