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
Babai_dpe	4655122
Babai_fast	30141804
Babai_heuristic	288770
GS_extraprec	4727724
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848845
ZM_flatter	626842
ZM_flatter_rank	624828
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606352
ZM_is_lower	1205103
ZM_is_upper	4236479
ZM_lll_norms	7137974
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4086682
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580801
addmulzu2n	271563
addzi	17783255
affdbldpe	3206953
affdpe	25731662
affidpe	20752820
affii_or_copy_gc	1390413
cget_dblmat	8415527
cget_dblvec	34985196
cget_dpemat	3206953
cget_dpevec	13296406
condition_bound	4727724
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118042239
dbldotsquare	2481226
dblrotate	34547547
do_SWAPgen	196
dpeM_diagonal_shallow	20146
dpe_abscmp	14517049
dpe_abssmall	1390435
dpe_addmuluz	342913
dpe_addz	1943128
dpe_cmp	5263458
dpe_cmpmul	5263452
dpe_divz	14076633
dpe_muluz	799876
dpe_mulz	56967340
dpe_negz	244402
dpe_normalize	48111792
dpe_normalize0	108569839
dpe_submuluz	412412
dpe_submulz	51703984
dpe_subz	53735109
dperotate	652349
dpetor	93799
drop	1347110
flat	1347113
flattergram_i	2967
fplll	0
fplll_dpe	1603478
fplll_fast	2103885
fplll_flatter	625789
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1098827
gramschmidt_dynprec	2694225
gramschmidt_upper	1336
gsisinv	5195476
incrementalGSgen	168
itodbl_exp	162370749
kerint	42
kerint0	70
lll	1243328
lll_finish	2164494
lll_trivial	771700
lllall	36699
lllallgen	168
lllfp	5371391
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096682
mulshift	317717
nbits2prec64	7492719
pari_rint	10768361
potential	1347111
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31871874
rotateG	443223
rotateG_fast	11515859
setG2_fast	16984934
setG2_heuristic	187610
setG_fast	22613601
setG_heuristic	205626
set_line	24884377
sizered	1347113
spread	5852729
submuliu2n	4177552
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923315
submulzu2n	262549
subzi	18524682
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11959189
vectail_inplace	2090368

Generated by: LCOV version 1.16