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 30499-74bdd0ac5b) Lines: 1335 1641 81.4 % Date: 2025-09-17 09:23:49 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	4246
fplll_heuristic	4246
gc_lll	4835
lllgram	9089
truncexpo	12139
ZC_to_RC	15952
dpeM_diagonal_shallow	20287
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44560
RgM_is_square_mat	45828
dpetor	94271
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244434
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	318943
dpe_addmuluz	342913
absrsmall2	402705
dpe_submuluz	412454
rotateG	443711
ZM_is_knapsack	606453
ZM_flatter_rank	624489
fplll_flatter	625450
ZM_flatter	626503
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	698128
lll_trivial	771727
dpe_muluz	799918
get_gramschmidt	1098361
realdotproduct	1186355
ZM_is_lower	1204543
lll	1243329
drop	1346002
potential	1346003
sizered	1346005
flat	1346006
affii_or_copy_gc	1390587
dpe_abssmall	1390597
submulshift	1507251
fplll_dpe	1603177
dpe_addz	1943185
vectail_inplace	2090130
fplll_fast	2103649
lll_finish	2164355
dbldotsquare	2480610
gramschmidt_dynprec	2692008
affdbldpe	3206350
cget_dpemat	3206350
mpabscmp	4093453
addmuliu2n	4105104
submuliu2n	4197598
ZM_is_upper	4233867
addmulziu	4580839
Babai_dpe	4654230
GS_extraprec	4724929
condition_bound	4724930
ZM2_lll_norms	4843851
gsisinv	5192552
dpe_cmpmul	5262421
dpe_cmp	5262431
lllfp	5368173
spread	5849930
submulziu	5923691
ZM_lll_norms	7132836
nbits2prec64	7486927
cget_dblmat	8414581
addmuliu64_inplace	9581364
submuliu64_inplace	9632106
pari_rint	10794551
rotateG_fast	11545401
update_alpha	11989228
cget_dpevec	13292855
dpe_divz	14075212
dpe_abscmp	14515693
setG2_fast	17026609
addzi	17783410
subzi	18524887
u64toi	19900941
affidpe	20749799
setG_fast	22655375
set_line	24925815
affdpe	25731391
Babai_fast	30199890
rotate	31930620
dblrotate	34636167
cget_dblvec	34979209
dpe_normalize	48108684
dpe_submulz	51702293
dpe_subz	53733485
dpe_mulz	56964563
dpe_normalize0	108561271
dbldotproduct	118221061
itodbl_exp	162613478

Generated by: LCOV version 1.16