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: 2026-08-25 17:02:38 Functions: 96.2 % 131 126 Legend: Lines:     hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4767735
Babai_fast	31679185
Babai_heuristic	303121
GS_extraprec	4729015
REDgen	196
RgM_Cholesky_dynprec	2988
RgM_flip	34953
RgM_flop	0
RgM_is_square_mat	45834
ZC_to_RC	22450
ZM2_lll_norms	4851176
ZM_flatter	627254
ZM_flatter_rank	625240
ZM_flattergram	968
ZM_flattergram_rank	968
ZM_is_knapsack	607619
ZM_is_lower	1205603
ZM_is_upper	4239517
ZM_lll_norms	7144108
ZM_to_RM	4708
absrsmall	763551
absrsmall2	443564
addmuliu2n	4666468
addmuliu642n	729530
addmuliu64_inplace	10613593
addmulziu	10826608
addmulzu2n	17070592
addzi	32506340
affdbldpe	3210502
affdpe	33168309
affidpe	22440430
affii_or_copy_gc	2183624
cget_dblmat	8430168
cget_dblvec	35111288
cget_dpemat	3210502
cget_dpevec	13317961
condition_bound	4729015
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	129212262
dbldotsquare	2485225
dblrotate	35880045
do_SWAPgen	196
dpeM_diagonal_shallow	1736
dpe_abscmp	15812913
dpe_abssmall	2183624
dpe_addmuluz	1345057
dpe_addz	6685227
dpe_cmp	5479825
dpe_cmpmul	5479825
dpe_divz	15649238
dpe_muluz	8704419
dpe_mulz	75175756
dpe_negz	366738
dpe_normalize	77495337
dpe_normalize0	153383946
dpe_submuluz	1433659
dpe_submulz	69695931
dpe_subz	76421736
dperotate	718524
dpetor	26670
drop	1347772
flat	1347772
flattergram_i	2988
fplll	0
fplll_dpe	1605251
fplll_fast	2107542
fplll_flatter	626208
fplll_heuristic	4708
gc_lll	5462
get_cholesky	44547
get_gramschmidt	1099638
gramschmidt_dynprec	2695544
gramschmidt_upper	1402
incrementalGSgen	168
itodbl_exp	177078967
kerint	28
kerint0	56
lll	1244995
lll_finish	2168182
lll_trivial	771856
lllall	36701
lllallgen	168
lllfp	5375570
lllgen	42
lllgram	9093
lllgramallgen	168
lllgramgen	42
lllgramint	36441
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4109040
mulshift	938306
nbits2prec64	7496274
pari_rint	11657194
potential	1347772
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1292770
realsqrdotproduct	208573
rotate	33258364
rotateG	480378
rotateG_fast	11960015
setG2_fast	17613976
setG2_heuristic	195857
setG_fast	23268312
setG_heuristic	218718
set_line	25548199
sizered	1347772
spread	5855744
submuliu2n	4742059
submuliu642n	747684
submuliu64_inplace	10666126
submulshift	2074370
submulziu	12229399
submulzu2n	16867897
subzi	33271522
thre	1033858
thsn	92871
truncexpo	24470
u64toi	22027403
u64toineg	729530
update_alpha	12440393
vectail_inplace	2093563

Generated by: LCOV version 2.0-1