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 30670-52869c8c38) Lines: 1336 1642 81.4 % Date: 2026-02-05 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	4244
fplll_heuristic	4244
gc_lll	4833
lllgram	9089
truncexpo	12138
ZC_to_RC	15945
dpeM_diagonal_shallow	20146
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93799
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244402
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412412
rotateG	443223
ZM_is_knapsack	606352
ZM_flatter_rank	624828
fplll_flatter	625789
ZM_flatter	626842
dperotate	652349
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771700
dpe_muluz	799876
get_gramschmidt	1098827
realdotproduct	1183370
ZM_is_lower	1205103
lll	1243328
drop	1347110
potential	1347111
flat	1347113
sizered	1347113
affii_or_copy_gc	1390413
dpe_abssmall	1390435
submulshift	1501323
fplll_dpe	1603478
dpe_addz	1943128
vectail_inplace	2090368
fplll_fast	2103885
lll_finish	2164494
dbldotsquare	2481226
gramschmidt_dynprec	2694225
affdbldpe	3206953
cget_dpemat	3206953
addmuliu2n	4086682
mpabscmp	4096682
submuliu2n	4177552
ZM_is_upper	4236479
addmulziu	4580801
Babai_dpe	4655122
GS_extraprec	4727724
condition_bound	4727724
ZM2_lll_norms	4848845
gsisinv	5195476
dpe_cmpmul	5263452
dpe_cmp	5263458
lllfp	5371391
spread	5852729
submulziu	5923315
ZM_lll_norms	7137974
nbits2prec64	7492719
cget_dblmat	8415527
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10768361
rotateG_fast	11515859
update_alpha	11959189
cget_dpevec	13296406
dpe_divz	14076633
dpe_abscmp	14517049
setG2_fast	16984934
addzi	17783255
subzi	18524682
u64toi	19880176
affidpe	20752820
setG_fast	22613601
set_line	24884377
affdpe	25731662
Babai_fast	30141804
rotate	31871874
dblrotate	34547547
cget_dblvec	34985196
dpe_normalize	48111792
dpe_submulz	51703984
dpe_subz	53735109
dpe_mulz	56967340
dpe_normalize0	108569839
dbldotproduct	118042239
itodbl_exp	162370749

Generated by: LCOV version 1.16