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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 81.2 % 1645 1336 Test Date: 2026-08-13 17:02:38 Functions: 96.2 % 131 126 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	968
ZM_flattergram_rank	968
gramschmidt_upper	1402
dpeM_diagonal_shallow	1736
RgM_Cholesky_dynprec	2988
flattergram_i	2988
ZM_to_RM	4706
fplll_heuristic	4706
gc_lll	5460
lllgram	9093
ZC_to_RC	22443
truncexpo	24469
dpetor	26670
RgM_flip	34953
lllgramint	36441
lllall	36701
get_cholesky	44547
RgM_is_square_mat	45834
thsn	92869
setG2_heuristic	195115
realsqrdotproduct	207826
setG_heuristic	217970
Babai_heuristic	302144
dpe_negz	366732
absrsmall2	442325
rotateG	479947
ZM_is_knapsack	607666
ZM_flatter_rank	625231
fplll_flatter	626199
ZM_flatter	627245
dperotate	718524
addmuliu642n	729530
u64toineg	729530
submuliu642n	747684
absrsmall	761889
lll_trivial	771854
mulshift	938305
thre	1033912
get_gramschmidt	1099634
ZM_is_lower	1205599
lll	1244995
realdotproduct	1289785
dpe_addmuluz	1345057
drop	1347753
flat	1347753
potential	1347753
sizered	1347753
dpe_submuluz	1433659
fplll_dpe	1605248
submulshift	2074362
vectail_inplace	2093608
fplll_fast	2107587
lll_finish	2168227
affii_or_copy_gc	2183624
dpe_abssmall	2183624
dbldotsquare	2485205
gramschmidt_dynprec	2695506
affdbldpe	3210496
cget_dpemat	3210496
mpabscmp	4109188
ZM_is_upper	4239476
addmuliu2n	4663814
GS_extraprec	4729019
condition_bound	4729019
submuliu2n	4738095
Babai_dpe	4767740
ZM2_lll_norms	4851009
lllfp	5375513
dpe_cmp	5479830
dpe_cmpmul	5479830
spread	5855800
dpe_addz	6685227
ZM_lll_norms	7143986
nbits2prec64	7496188
cget_dblmat	8430348
dpe_muluz	8704419
addmuliu64_inplace	10613593
submuliu64_inplace	10666126
addmulziu	10826608
pari_rint	11658073
rotateG_fast	11960796
submulziu	12229399
update_alpha	12440743
cget_dpevec	13317832
dpe_divz	15649351
dpe_abscmp	15813026
submulzu2n	16867897
addmulzu2n	17070592
setG2_fast	17615151
u64toi	22027403
affidpe	22440480
setG_fast	23269803
set_line	25549695
Babai_fast	31681562
addzi	32506340
affdpe	33168489
rotate	33258554
subzi	33271522
cget_dblvec	35112722
dblrotate	35882388
dpe_submulz	69696636
dpe_mulz	75176466
dpe_subz	76422441
dpe_normalize	77495975
dbldotproduct	129219098
dpe_normalize0	153385348
itodbl_exp	177085707

Generated by: LCOV version 2.0-1