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:

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 30316-0578a48613) Lines: 1335 1641 81.4 %
Date: 2025-06-04 09:19:51 Functions: 125 130 96.2 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by 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 4144
fplll_heuristic 4144
gc_lll 4733
lllgram 9089
truncexpo 12138
ZC_to_RC 15745
dpeM_diagonal_shallow 20167
RgM_flip 34918
lllgramint 36439
lllall 36699
get_gaussred 44322
RgM_is_square_mat 45828
dpetor 93716
setG2_heuristic 187538
realsqrdotproduct 197241
setG_heuristic 205419
dpe_negz 244165
submulzu2n 262549
addmulzu2n 271563
Babai_heuristic 288670
mulshift 317352
dpe_addmuluz 342689
absrsmall2 401359
dpe_submuluz 411956
rotateG 442790
ZM_is_knapsack 605853
ZM_flatter_rank 616284
fplll_flatter 617245
ZM_flatter 618298
dperotate 651482
addmuliu642n 667795
u64toineg 667795
submuliu642n 683874
absrsmall 696359
lll_trivial 770474
dpe_muluz 799195
get_gramschmidt 1082356
lll 1174816
ZM_is_lower 1182164
realdotproduct 1182991
flat 1335549
potential 1335550
drop 1335551
sizered 1335551
affii_or_copy_gc 1388077
dpe_abssmall 1388102
submulshift 1499893
fplll_dpe 1567678
dpe_addz 1942234
vectail_inplace 2054443
fplll_fast 2068092
lll_finish 2128523
dbldotsquare 2439736
gramschmidt_dynprec 2671100
affdbldpe 3135355
cget_dpemat 3135365
mpabscmp 4063273
addmuliu2n 4082172
submuliu2n 4173234
ZM_is_upper 4177743
addmulziu 4577389
Babai_dpe 4585532
GS_extraprec 4688740
condition_bound 4688740
ZM2_lll_norms 4700637
gsisinv 5148565
dpe_cmpmul 5193669
dpe_cmp 5193671
lllfp 5268147
spread 5805103
submulziu 5920193
ZM_lll_norms 6953762
nbits2prec64 7413756
cget_dblmat 8272350
addmuliu64_inplace 9532506
submuliu64_inplace 9584977
pari_rint 10707854
rotateG_fast 11461865
update_alpha 11904795
cget_dpevec 13039849
dpe_divz 13955298
dpe_abscmp 14395971
setG2_fast 16889607
addzi 17776260
subzi 18517864
u64toi 19801357
affidpe 20520419
setG_fast 22443612
set_line 24678555
affdpe 25565809
Babai_fast 29992599
rotate 31717474
dblrotate 34385594
cget_dblvec 34473925
dpe_normalize 47894234
dpe_submulz 51516130
dpe_subz 53546336
dpe_mulz 56709687
dpe_normalize0 108011275
dbldotproduct 117549950
itodbl_exp 161595127

Generated by: LCOV version 1.16