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 30838-aa3635ec72) Lines: 1336 1642 81.4 % Date: 2026-04-28 09:25:50 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656208
Babai_fast	30146446
Babai_heuristic	288770
GS_extraprec	4726979
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847707
ZM_flatter	626838
ZM_flatter_rank	624824
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606599
ZM_is_lower	1205454
ZM_is_upper	4236446
ZM_lll_norms	7137550
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4087044
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580622
addmulzu2n	271563
addzi	17782413
affdbldpe	3207731
affdpe	25733166
affidpe	20756431
affii_or_copy_gc	1390377
cget_dblmat	8418461
cget_dblvec	34998541
cget_dpemat	3207740
cget_dpevec	13300505
condition_bound	4726979
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118032556
dbldotsquare	2482301
dblrotate	34551760
do_SWAPgen	196
dpeM_diagonal_shallow	1547
dpe_abscmp	14518998
dpe_abssmall	1390416
dpe_addmuluz	342907
dpe_addz	1943114
dpe_cmp	5264511
dpe_cmpmul	5264507
dpe_divz	14078532
dpe_muluz	799874
dpe_mulz	56968558
dpe_negz	244391
dpe_normalize	48113161
dpe_normalize0	108574463
dpe_submuluz	412417
dpe_submulz	51704248
dpe_subz	53735297
dperotate	652350
dpetor	23604
drop	1346902
flat	1346901
flattergram_i	2967
fplll	0
fplll_dpe	1603866
fplll_fast	2104621
fplll_flatter	625785
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1099238
gramschmidt_dynprec	2693802
gramschmidt_upper	1336
gsisinv	5195146
incrementalGSgen	168
itodbl_exp	162300441
kerint	28
kerint0	56
lll	1243426
lll_finish	2165231
lll_trivial	771770
lllall	36699
lllallgen	168
lllfp	5370908
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096387
mulshift	317610
nbits2prec64	7491920
pari_rint	10769047
potential	1346902
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31876396
rotateG	443223
rotateG_fast	11517270
setG2_fast	16986601
setG2_heuristic	187610
setG_fast	22617119
setG_heuristic	205626
set_line	24888647
sizered	1346903
spread	5852641
submuliu2n	4173300
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923105
submulzu2n	262549
subzi	18524076
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11960644
vectail_inplace	2091067

Generated by: LCOV version 1.16