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 30499-74bdd0ac5b) Lines: 1335 1641 81.4 % Date: 2025-09-18 09:23:44 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	20286
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44560
RgM_is_square_mat	45828
dpetor	94269
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244425
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412451
rotateG	443280
ZM_is_knapsack	606674
ZM_flatter_rank	624479
fplll_flatter	625440
ZM_flatter	626493
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771734
dpe_muluz	799915
get_gramschmidt	1098357
realdotproduct	1183370
ZM_is_lower	1204539
lll	1243327
drop	1345957
flat	1345958
potential	1345958
sizered	1345959
affii_or_copy_gc	1390582
dpe_abssmall	1390597
submulshift	1507243
fplll_dpe	1603162
dpe_addz	1943182
vectail_inplace	2090338
fplll_fast	2103860
lll_finish	2164566
dbldotsquare	2480855
gramschmidt_dynprec	2691917
affdbldpe	3206324
cget_dpemat	3206331
mpabscmp	4093611
addmuliu2n	4104342
submuliu2n	4196900
ZM_is_upper	4233769
addmulziu	4580811
Babai_dpe	4654257
GS_extraprec	4724898
condition_bound	4724898
ZM2_lll_norms	4843454
gsisinv	5192519
dpe_cmpmul	5262448
dpe_cmp	5262461
lllfp	5368029
spread	5850111
submulziu	5923671
ZM_lll_norms	7132625
nbits2prec64	7486710
cget_dblmat	8415430
addmuliu64_inplace	9581364
submuliu64_inplace	9632106
pari_rint	10796332
rotateG_fast	11547081
update_alpha	11990500
cget_dpevec	13292874
dpe_divz	14075434
dpe_abscmp	14515925
setG2_fast	17029266
addzi	17783379
subzi	18524986
u64toi	19900941
affidpe	20750039
setG_fast	22658724
set_line	24929137
affdpe	25731530
Babai_fast	30204341
rotate	31933566
dblrotate	34641236
cget_dblvec	34983186
dpe_normalize	48109419
dpe_submulz	51703042
dpe_subz	53734244
dpe_mulz	56965306
dpe_normalize0	108562999
dbldotproduct	118233676
itodbl_exp	162617402

Generated by: LCOV version 1.16