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 30256-57c6c2b57f) Lines: 1335 1641 81.4 % Date: 2025-05-07 09:19:00 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	4144
fplll_heuristic	4144
gc_lll	4733
lllgram	9089
truncexpo	12138
ZC_to_RC	15745
dpeM_diagonal_shallow	20168
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44315
RgM_is_square_mat	45828
dpetor	93746
setG2_heuristic	187538
realsqrdotproduct	197241
setG_heuristic	205419
dpe_negz	244171
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288670
mulshift	317357
dpe_addmuluz	342689
absrsmall2	401359
dpe_submuluz	411954
rotateG	442783
ZM_is_knapsack	605919
ZM_flatter_rank	616330
fplll_flatter	617291
ZM_flatter	618344
dperotate	651468
addmuliu642n	667843
u64toineg	667843
submuliu642n	683910
absrsmall	696359
lll_trivial	770051
dpe_muluz	799194
get_gramschmidt	1082372
lll	1174815
ZM_is_lower	1182170
realdotproduct	1182991
drop	1335724
potential	1335724
flat	1335725
sizered	1335726
affii_or_copy_gc	1388083
dpe_abssmall	1388092
submulshift	1499977
fplll_dpe	1567658
dpe_addz	1942237
vectail_inplace	2054502
fplll_fast	2068195
lll_finish	2128589
dbldotsquare	2439897
gramschmidt_dynprec	2671448
cget_dpemat	3135298
affdbldpe	3135313
mpabscmp	4063857
addmuliu2n	4082560
submuliu2n	4174147
ZM_is_upper	4178105
addmulziu	4577398
Babai_dpe	4585491
GS_extraprec	4689225
condition_bound	4689225
ZM2_lll_norms	4701119
gsisinv	5149017
dpe_cmpmul	5193649
dpe_cmp	5193658
lllfp	5268671
spread	5805605
submulziu	5920076
ZM_lll_norms	6953945
nbits2prec64	7414518
cget_dblmat	8272758
addmuliu64_inplace	9532776
submuliu64_inplace	9585296
pari_rint	10708690
rotateG_fast	11462382
update_alpha	11905263
cget_dpevec	13039895
dpe_divz	13955233
dpe_abscmp	14395911
setG2_fast	16890785
addzi	17776293
subzi	18517867
u64toi	19801982
affidpe	20520289
setG_fast	22445050
set_line	24680400
affdpe	25565362
Babai_fast	29994793
rotate	31718889
dblrotate	34387042
cget_dblvec	34475657
dpe_normalize	47894549
dpe_submulz	51516155
dpe_subz	53546370
dpe_mulz	56709668
dpe_normalize0	108011817
dbldotproduct	117556538
itodbl_exp	161608027

Generated by: LCOV version 1.16