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: 2026-10-12 17:03:14 Functions: 96.2 % 131 126 Legend: Lines:     hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4767851
Babai_fast	31686892
Babai_heuristic	302144
GS_extraprec	4729251
REDgen	196
RgM_Cholesky_dynprec	2988
RgM_flip	34953
RgM_flop	0
RgM_is_square_mat	45834
ZC_to_RC	22443
ZM2_lll_norms	4851224
ZM_flatter	627266
ZM_flatter_rank	625252
ZM_flattergram	968
ZM_flattergram_rank	968
ZM_is_knapsack	607739
ZM_is_lower	1205625
ZM_is_upper	4239649
ZM_lll_norms	7144292
ZM_to_RM	4706
absrsmall	761889
absrsmall2	442325
addmuliu2n	4665670
addmuliu642n	729530
addmuliu64_inplace	10613593
addmulziu	10826608
addmulzu2n	17070592
addzi	32506340
affdbldpe	3210534
affdpe	33169014
affidpe	22440965
affii_or_copy_gc	2183624
cget_dblmat	8430712
cget_dblvec	35115028
cget_dpemat	3210534
cget_dpevec	13317699
condition_bound	4729251
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	129242186
dbldotsquare	2485090
dblrotate	35888376
do_SWAPgen	196
dpeM_diagonal_shallow	1736
dpe_abscmp	15813587
dpe_abssmall	2183624
dpe_addmuluz	1345057
dpe_addz	6685227
dpe_cmp	5479941
dpe_cmpmul	5479941
dpe_divz	15649912
dpe_muluz	8704419
dpe_mulz	75179362
dpe_negz	366739
dpe_normalize	77498827
dpe_normalize0	153391674
dpe_submuluz	1433659
dpe_submulz	69699421
dpe_subz	76425226
dperotate	718524
dpetor	26670
drop	1347830
flat	1347830
flattergram_i	2988
fplll	0
fplll_dpe	1605267
fplll_fast	2107678
fplll_flatter	626220
fplll_heuristic	4706
gc_lll	5460
get_cholesky	44547
get_gramschmidt	1099660
gramschmidt_dynprec	2695660
gramschmidt_upper	1402
incrementalGSgen	168
itodbl_exp	177119569
kerint	28
kerint0	56
lll	1244995
lll_finish	2168318
lll_trivial	771853
lllall	36701
lllallgen	168
lllfp	5375744
lllgen	42
lllgram	9093
lllgramallgen	168
lllgramgen	42
lllgramint	36441
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4109726
mulshift	938305
nbits2prec64	7496581
pari_rint	11658621
potential	1347830
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1289785
realsqrdotproduct	207826
rotate	33264538
rotateG	479947
rotateG_fast	11962792
setG2_fast	17618338
setG2_heuristic	195115
setG_fast	23273465
setG_heuristic	217970
set_line	25553460
sizered	1347830
spread	5856110
submuliu2n	4739439
submuliu642n	747684
submuliu64_inplace	10666126
submulshift	2074362
submulziu	12229399
submulzu2n	16867897
subzi	33271522
thre	1033988
thsn	92871
truncexpo	24469
u64toi	22027403
u64toineg	729530
update_alpha	12442739
vectail_inplace	2093699

Generated by: LCOV version 2.0-1