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
Babai_dpe	4656365
Babai_fast	30142911
Babai_heuristic	288770
GS_extraprec	4727190
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848119
ZM_flatter	626853
ZM_flatter_rank	624839
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606532
ZM_is_lower	1205479
ZM_is_upper	4236812
ZM_lll_norms	7138054
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4083173
addmuliu642n	668118
addmuliu64_inplace	9567338
addmulziu	4580751
addmulzu2n	271563
addzi	17783030
affdbldpe	3208062
affdpe	25732949
affidpe	20756786
affii_or_copy_gc	1390417
cget_dblmat	8418852
cget_dblvec	34999166
cget_dpemat	3208069
cget_dpevec	13301685
condition_bound	4727190
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118016833
dbldotsquare	2482570
dblrotate	34548541
do_SWAPgen	196
dpeM_diagonal_shallow	1547
dpe_abscmp	14518809
dpe_abssmall	1390428
dpe_addmuluz	342907
dpe_addz	1943119
dpe_cmp	5264644
dpe_cmpmul	5264641
dpe_divz	14078385
dpe_muluz	799873
dpe_mulz	56966940
dpe_negz	244397
dpe_normalize	48111915
dpe_normalize0	108571802
dpe_submuluz	412414
dpe_submulz	51702507
dpe_subz	53733583
dperotate	652348
dpetor	23604
drop	1346999
flat	1347001
flattergram_i	2967
fplll	0
fplll_dpe	1604031
fplll_fast	2104717
fplll_flatter	625800
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099260
gramschmidt_dynprec	2694000
gramschmidt_upper	1336
gsisinv	5195363
incrementalGSgen	168
itodbl_exp	162294154
kerint	28
kerint0	56
lll	1243427
lll_finish	2165324
lll_trivial	771774
lllall	36699
lllallgen	168
lllfp	5371205
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096499
mulshift	317610
nbits2prec64	7492378
pari_rint	10769009
potential	1347001
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31872508
rotateG	443223
rotateG_fast	11516184
setG2_fast	16984827
setG2_heuristic	187610
setG_fast	22615532
setG_heuristic	205626
set_line	24886894
sizered	1347000
spread	5852792
submuliu2n	4168493
submuliu642n	683445
submuliu64_inplace	9625841
submulshift	1499787
submulziu	5923331
submulzu2n	262549
subzi	18524734
truncexpo	12138
u64toi	19876624
u64toineg	668118
update_alpha	11959517
vectail_inplace	2091158

Generated by: LCOV version 1.16