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) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30744-52374ab6cf) Lines: 1336 1642 81.4 % Date: 2026-03-17 09:26:37 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
RgM_flop	0
dbg_flatter	0
dbg_flattergram	0
fplll	0
matkerint0	28
lllgramkerim	35
lllkerim	35
kerint	42
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
qflllgram	63
kerint0	70
incrementalGSgen	168
lllallgen	168
lllgramallgen	168
lllint	183
REDgen	196
do_SWAPgen	196
qflllgram0	245
qflll0	301
pslg	504
ZM_flattergram	961
ZM_flattergram_rank	961
gramschmidt_upper	1336
RgM_Cholesky_dynprec	2967
flattergram_i	2967
ZM_to_RM	4244
fplll_heuristic	4244
gc_lll	4833
lllgram	9089
truncexpo	12138
ZC_to_RC	15945
dpeM_diagonal_shallow	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244376
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342906
absrsmall2	401466
dpe_submuluz	412418
rotateG	443223
ZM_is_knapsack	606599
ZM_flatter_rank	624819
fplll_flatter	625780
ZM_flatter	626833
dperotate	652349
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771775
dpe_muluz	799875
get_gramschmidt	1099262
realdotproduct	1183370
ZM_is_lower	1205487
lll	1243427
drop	1346934
potential	1346934
flat	1346935
sizered	1346936
affii_or_copy_gc	1390410
dpe_abssmall	1390425
submulshift	1499787
fplll_dpe	1603907
dpe_addz	1943118
vectail_inplace	2091093
fplll_fast	2104659
lll_finish	2165270
dbldotsquare	2482402
gramschmidt_dynprec	2693871
cget_dpemat	3207806
affdbldpe	3207812
addmuliu2n	4085563
mpabscmp	4096597
submuliu2n	4170706
ZM_is_upper	4236553
addmulziu	4580779
Babai_dpe	4656292
GS_extraprec	4727043
condition_bound	4727043
ZM2_lll_norms	4847820
gsisinv	5195243
dpe_cmpmul	5264572
dpe_cmp	5264578
lllfp	5371008
spread	5852737
submulziu	5923344
ZM_lll_norms	7137723
nbits2prec64	7492140
cget_dblmat	8418611
addmuliu64_inplace	9567325
submuliu64_inplace	9625851
pari_rint	10769398
rotateG_fast	11518060
update_alpha	11961343
cget_dpevec	13300933
dpe_divz	14078644
dpe_abscmp	14519193
setG2_fast	16987952
addzi	17783165
subzi	18524460
u64toi	19876621
affidpe	20756960
setG_fast	22619156
set_line	24891390
affdpe	25733554
Babai_fast	30148599
rotate	31878566
dblrotate	34554153
cget_dblvec	35000079
dpe_normalize	48113987
dpe_submulz	51705087
dpe_subz	53736155
dpe_mulz	56969527
dpe_normalize0	108576521
dbldotproduct	118044511
itodbl_exp	162363588

Generated by: LCOV version 1.16