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 30446-bebd557ed6) Lines: 1335 1641 81.4 % Date: 2025-08-06 09:23:53 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	20287
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44559
RgM_is_square_mat	45828
dpetor	94271
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244428
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342911
absrsmall2	401466
dpe_submuluz	412454
rotateG	443280
ZM_is_knapsack	606453
ZM_flatter_rank	624466
fplll_flatter	625427
ZM_flatter	626480
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771711
dpe_muluz	799915
get_gramschmidt	1098336
realdotproduct	1183370
ZM_is_lower	1204526
lll	1243313
drop	1345881
flat	1345881
potential	1345881
sizered	1345882
affii_or_copy_gc	1390582
dpe_abssmall	1390598
submulshift	1507243
fplll_dpe	1603147
dpe_addz	1943187
vectail_inplace	2090116
fplll_fast	2103623
lll_finish	2164339
dbldotsquare	2480609
gramschmidt_dynprec	2691763
cget_dpemat	3206283
affdbldpe	3206291
mpabscmp	4093091
addmuliu2n	4104397
submuliu2n	4197067
ZM_is_upper	4233603
addmulziu	4580836
Babai_dpe	4654171
GS_extraprec	4724564
condition_bound	4724565
ZM2_lll_norms	4841354
gsisinv	5192187
dpe_cmpmul	5262380
dpe_cmp	5262383
lllfp	5367776
spread	5849563
submulziu	5923677
ZM_lll_norms	7130279
nbits2prec64	7486312
cget_dblmat	8414463
addmuliu64_inplace	9581364
submuliu64_inplace	9632106
pari_rint	10794688
rotateG_fast	11545360
update_alpha	11988738
cget_dpevec	13292637
dpe_divz	14075109
dpe_abscmp	14515590
setG2_fast	17026564
addzi	17783636
subzi	18525144
u64toi	19900941
affidpe	20749659
setG_fast	22655122
set_line	24925325
affdpe	25731215
Babai_fast	30199869
rotate	31928362
dblrotate	34635953
cget_dblvec	34978717
dpe_normalize	48108501
dpe_submulz	51702160
dpe_subz	53733352
dpe_mulz	56964403
dpe_normalize0	108560878
dbldotproduct	118220259
itodbl_exp	162607974

Generated by: LCOV version 1.16