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
Babai_dpe	4767840
Babai_fast	31688848
Babai_heuristic	302144
GS_extraprec	4729058
REDgen	196
RgM_Cholesky_dynprec	2988
RgM_flip	34953
RgM_flop	0
RgM_is_square_mat	45834
ZC_to_RC	22443
ZM2_lll_norms	4851003
ZM_flatter	627254
ZM_flatter_rank	625240
ZM_flattergram	968
ZM_flattergram_rank	968
ZM_is_knapsack	607774
ZM_is_lower	1205620
ZM_is_upper	4239524
ZM_lll_norms	7144102
ZM_to_RM	4706
absrsmall	761889
absrsmall2	442325
addmuliu2n	4665702
addmuliu642n	729530
addmuliu64_inplace	10613593
addmulziu	10826608
addmulzu2n	17070592
addzi	32506340
affdbldpe	3210524
affdpe	33169091
affidpe	22440952
affii_or_copy_gc	2183624
cget_dblmat	8430836
cget_dblvec	35115618
cget_dpemat	3210524
cget_dpevec	13317684
condition_bound	4729058
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	129248463
dbldotsquare	2485132
dblrotate	35890593
do_SWAPgen	196
dpeM_diagonal_shallow	1736
dpe_abscmp	15813579
dpe_abssmall	2183624
dpe_addmuluz	1345057
dpe_addz	6685227
dpe_cmp	5479930
dpe_cmpmul	5479930
dpe_divz	15649904
dpe_muluz	8704419
dpe_mulz	75179375
dpe_negz	366748
dpe_normalize	77498747
dpe_normalize0	153391483
dpe_submuluz	1433659
dpe_submulz	69699445
dpe_subz	76425250
dperotate	718524
dpetor	26670
drop	1347770
flat	1347770
flattergram_i	2988
fplll	0
fplll_dpe	1605262
fplll_fast	2107709
fplll_flatter	626208
fplll_heuristic	4706
gc_lll	5460
get_cholesky	44547
get_gramschmidt	1099655
gramschmidt_dynprec	2695540
gramschmidt_upper	1402
incrementalGSgen	168
itodbl_exp	177127384
kerint	28
kerint0	56
lll	1244995
lll_finish	2168349
lll_trivial	771853
lllall	36701
lllallgen	168
lllfp	5375564
lllgen	42
lllgram	9093
lllgramallgen	168
lllgramgen	42
lllgramint	36441
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4109589
mulshift	938305
nbits2prec64	7496309
pari_rint	11659385
potential	1347770
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1289785
realsqrdotproduct	207826
rotate	33266761
rotateG	479947
rotateG_fast	11963531
setG2_fast	17619671
setG2_heuristic	195115
setG_fast	23274902
setG_heuristic	217970
set_line	25554929
sizered	1347770
spread	5855959
submuliu2n	4739471
submuliu642n	747684
submuliu64_inplace	10666126
submulshift	2074362
submulziu	12229399
submulzu2n	16867897
subzi	33271522
thre	1034032
thsn	92869
truncexpo	24469
u64toi	22027403
u64toineg	729530
update_alpha	12443478
vectail_inplace	2093730

Generated by: LCOV version 2.0-1