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: 2026-09-24 17:04:29 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	366748
absrsmall2	442325
rotateG	479947
ZM_is_knapsack	607774
ZM_flatter_rank	625240
fplll_flatter	626208
ZM_flatter	627254
dperotate	718524
addmuliu642n	729530
u64toineg	729530
submuliu642n	747684
absrsmall	761889
lll_trivial	771853
mulshift	938305
thre	1034032
get_gramschmidt	1099655
ZM_is_lower	1205620
lll	1244995
realdotproduct	1289785
dpe_addmuluz	1345057
drop	1347770
flat	1347770
potential	1347770
sizered	1347770
dpe_submuluz	1433659
fplll_dpe	1605262
submulshift	2074362
vectail_inplace	2093730
fplll_fast	2107709
lll_finish	2168349
affii_or_copy_gc	2183624
dpe_abssmall	2183624
dbldotsquare	2485132
gramschmidt_dynprec	2695540
affdbldpe	3210524
cget_dpemat	3210524
mpabscmp	4109589
ZM_is_upper	4239524
addmuliu2n	4665702
GS_extraprec	4729058
condition_bound	4729058
submuliu2n	4739471
Babai_dpe	4767840
ZM2_lll_norms	4851003
lllfp	5375564
dpe_cmp	5479930
dpe_cmpmul	5479930
spread	5855959
dpe_addz	6685227
ZM_lll_norms	7144102
nbits2prec64	7496309
cget_dblmat	8430836
dpe_muluz	8704419
addmuliu64_inplace	10613593
submuliu64_inplace	10666126
addmulziu	10826608
pari_rint	11659385
rotateG_fast	11963531
submulziu	12229399
update_alpha	12443478
cget_dpevec	13317684
dpe_divz	15649904
dpe_abscmp	15813579
submulzu2n	16867897
addmulzu2n	17070592
setG2_fast	17619671
u64toi	22027403
affidpe	22440952
setG_fast	23274902
set_line	25554929
Babai_fast	31688848
addzi	32506340
affdpe	33169091
rotate	33266761
subzi	33271522
cget_dblvec	35115618
dblrotate	35890593
dpe_submulz	69699445
dpe_mulz	75179375
dpe_subz	76425250
dpe_normalize	77498747
dbldotproduct	129248463
dpe_normalize0	153391483
itodbl_exp	177127384

Generated by: LCOV version 2.0-1