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 30674-be81ecfdd4) Lines: 1336 1642 81.4 % Date: 2026-02-11 09:23:10 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	20147
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44538
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244386
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412410
rotateG	443223
ZM_is_knapsack	606477
ZM_flatter_rank	624825
fplll_flatter	625785
ZM_flatter	626839
dperotate	652348
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771700
dpe_muluz	799874
get_gramschmidt	1098823
realdotproduct	1183370
ZM_is_lower	1205098
lll	1243327
drop	1347092
flat	1347093
potential	1347094
sizered	1347094
affii_or_copy_gc	1390419
dpe_abssmall	1390434
submulshift	1501323
fplll_dpe	1603452
dpe_addz	1943127
vectail_inplace	2090484
fplll_fast	2103998
lll_finish	2164612
dbldotsquare	2481228
gramschmidt_dynprec	2694185
cget_dpemat	3206894
affdbldpe	3206918
addmuliu2n	4090233
mpabscmp	4096657
submuliu2n	4182316
ZM_is_upper	4236434
addmulziu	4580797
Babai_dpe	4655128
GS_extraprec	4727710
condition_bound	4727710
ZM2_lll_norms	4848551
gsisinv	5195463
dpe_cmpmul	5263448
dpe_cmp	5263459
lllfp	5371334
spread	5852836
submulziu	5923340
ZM_lll_norms	7137820
nbits2prec64	7492652
cget_dblmat	8415982
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10769475
rotateG_fast	11516647
update_alpha	11959985
cget_dpevec	13296187
dpe_divz	14076667
dpe_abscmp	14517056
setG2_fast	16986136
addzi	17783617
subzi	18525207
u64toi	19880176
affidpe	20752803
setG_fast	22614947
set_line	24885626
affdpe	25731662
Babai_fast	30144980
rotate	31874251
dblrotate	34549904
cget_dblvec	34986041
dpe_normalize	48111893
dpe_submulz	51704079
dpe_subz	53735217
dpe_mulz	56967418
dpe_normalize0	108570250
dbldotproduct	118045527
itodbl_exp	162363767

Generated by: LCOV version 1.16