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
Babai_dpe	4767740
Babai_fast	31681562
Babai_heuristic	302144
GS_extraprec	4729019
REDgen	196
RgM_Cholesky_dynprec	2988
RgM_flip	34953
RgM_flop	0
RgM_is_square_mat	45834
ZC_to_RC	22443
ZM2_lll_norms	4851009
ZM_flatter	627245
ZM_flatter_rank	625231
ZM_flattergram	968
ZM_flattergram_rank	968
ZM_is_knapsack	607666
ZM_is_lower	1205599
ZM_is_upper	4239476
ZM_lll_norms	7143986
ZM_to_RM	4706
absrsmall	761889
absrsmall2	442325
addmuliu2n	4663814
addmuliu642n	729530
addmuliu64_inplace	10613593
addmulziu	10826608
addmulzu2n	17070592
addzi	32506340
affdbldpe	3210496
affdpe	33168489
affidpe	22440480
affii_or_copy_gc	2183624
cget_dblmat	8430348
cget_dblvec	35112722
cget_dpemat	3210496
cget_dpevec	13317832
condition_bound	4729019
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	129219098
dbldotsquare	2485205
dblrotate	35882388
do_SWAPgen	196
dpeM_diagonal_shallow	1736
dpe_abscmp	15813026
dpe_abssmall	2183624
dpe_addmuluz	1345057
dpe_addz	6685227
dpe_cmp	5479830
dpe_cmpmul	5479830
dpe_divz	15649351
dpe_muluz	8704419
dpe_mulz	75176466
dpe_negz	366732
dpe_normalize	77495975
dpe_normalize0	153385348
dpe_submuluz	1433659
dpe_submulz	69696636
dpe_subz	76422441
dperotate	718524
dpetor	26670
drop	1347753
flat	1347753
flattergram_i	2988
fplll	0
fplll_dpe	1605248
fplll_fast	2107587
fplll_flatter	626199
fplll_heuristic	4706
gc_lll	5460
get_cholesky	44547
get_gramschmidt	1099634
gramschmidt_dynprec	2695506
gramschmidt_upper	1402
incrementalGSgen	168
itodbl_exp	177085707
kerint	28
kerint0	56
lll	1244995
lll_finish	2168227
lll_trivial	771854
lllall	36701
lllallgen	168
lllfp	5375513
lllgen	42
lllgram	9093
lllgramallgen	168
lllgramgen	42
lllgramint	36441
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4109188
mulshift	938305
nbits2prec64	7496188
pari_rint	11658073
potential	1347753
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1289785
realsqrdotproduct	207826
rotate	33258554
rotateG	479947
rotateG_fast	11960796
setG2_fast	17615151
setG2_heuristic	195115
setG_fast	23269803
setG_heuristic	217970
set_line	25549695
sizered	1347753
spread	5855800
submuliu2n	4738095
submuliu642n	747684
submuliu64_inplace	10666126
submulshift	2074362
submulziu	12229399
submulzu2n	16867897
subzi	33271522
thre	1033912
thsn	92869
truncexpo	24469
u64toi	22027403
u64toineg	729530
update_alpha	12440743
vectail_inplace	2093608

Generated by: LCOV version 2.0-1