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
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	4708
fplll_heuristic	4708
gc_lll	5462
lllgram	9093
ZC_to_RC	22450
truncexpo	24470
dpetor	26670
RgM_flip	34953
lllgramint	36441
lllall	36701
get_cholesky	44547
RgM_is_square_mat	45834
thsn	92871
setG2_heuristic	195857
realsqrdotproduct	208573
setG_heuristic	218718
Babai_heuristic	303121
dpe_negz	366738
absrsmall2	443564
rotateG	480378
ZM_is_knapsack	607619
ZM_flatter_rank	625240
fplll_flatter	626208
ZM_flatter	627254
dperotate	718524
addmuliu642n	729530
u64toineg	729530
submuliu642n	747684
absrsmall	763551
lll_trivial	771856
mulshift	938306
thre	1033858
get_gramschmidt	1099638
ZM_is_lower	1205603
lll	1244995
realdotproduct	1292770
dpe_addmuluz	1345057
drop	1347772
flat	1347772
potential	1347772
sizered	1347772
dpe_submuluz	1433659
fplll_dpe	1605251
submulshift	2074370
vectail_inplace	2093563
fplll_fast	2107542
lll_finish	2168182
affii_or_copy_gc	2183624
dpe_abssmall	2183624
dbldotsquare	2485225
gramschmidt_dynprec	2695544
affdbldpe	3210502
cget_dpemat	3210502
mpabscmp	4109040
ZM_is_upper	4239517
addmuliu2n	4666468
GS_extraprec	4729015
condition_bound	4729015
submuliu2n	4742059
Babai_dpe	4767735
ZM2_lll_norms	4851176
lllfp	5375570
dpe_cmp	5479825
dpe_cmpmul	5479825
spread	5855744
dpe_addz	6685227
ZM_lll_norms	7144108
nbits2prec64	7496274
cget_dblmat	8430168
dpe_muluz	8704419
addmuliu64_inplace	10613593
submuliu64_inplace	10666126
addmulziu	10826608
pari_rint	11657194
rotateG_fast	11960015
submulziu	12229399
update_alpha	12440393
cget_dpevec	13317961
dpe_divz	15649238
dpe_abscmp	15812913
submulzu2n	16867897
addmulzu2n	17070592
setG2_fast	17613976
u64toi	22027403
affidpe	22440430
setG_fast	23268312
set_line	25548199
Babai_fast	31679185
addzi	32506340
affdpe	33168309
rotate	33258364
subzi	33271522
cget_dblvec	35111288
dblrotate	35880045
dpe_submulz	69695931
dpe_mulz	75175756
dpe_subz	76421736
dpe_normalize	77495337
dbldotproduct	129212262
dpe_normalize0	153383946
itodbl_exp	177078967

Generated by: LCOV version 2.0-1