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 30674-be81ecfdd4) Lines: 1336 1642 81.4 % Date: 2026-02-11 09:23:10 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655128
Babai_fast	30144980
Babai_heuristic	288770
GS_extraprec	4727710
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848551
ZM_flatter	626839
ZM_flatter_rank	624825
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606477
ZM_is_lower	1205098
ZM_is_upper	4236434
ZM_lll_norms	7137820
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4090233
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580797
addmulzu2n	271563
addzi	17783617
affdbldpe	3206918
affdpe	25731662
affidpe	20752803
affii_or_copy_gc	1390419
cget_dblmat	8415982
cget_dblvec	34986041
cget_dpemat	3206894
cget_dpevec	13296187
condition_bound	4727710
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118045527
dbldotsquare	2481228
dblrotate	34549904
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14517056
dpe_abssmall	1390434
dpe_addmuluz	342913
dpe_addz	1943127
dpe_cmp	5263459
dpe_cmpmul	5263448
dpe_divz	14076667
dpe_muluz	799874
dpe_mulz	56967418
dpe_negz	244386
dpe_normalize	48111893
dpe_normalize0	108570250
dpe_submuluz	412410
dpe_submulz	51704079
dpe_subz	53735217
dperotate	652348
dpetor	93802
drop	1347092
flat	1347093
flattergram_i	2967
fplll	0
fplll_dpe	1603452
fplll_fast	2103998
fplll_flatter	625785
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1098823
gramschmidt_dynprec	2694185
gramschmidt_upper	1336
gsisinv	5195463
incrementalGSgen	168
itodbl_exp	162363767
kerint	42
kerint0	70
lll	1243327
lll_finish	2164612
lll_trivial	771700
lllall	36699
lllallgen	168
lllfp	5371334
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096657
mulshift	317717
nbits2prec64	7492652
pari_rint	10769475
potential	1347094
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31874251
rotateG	443223
rotateG_fast	11516647
setG2_fast	16986136
setG2_heuristic	187610
setG_fast	22614947
setG_heuristic	205626
set_line	24885626
sizered	1347094
spread	5852836
submuliu2n	4182316
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923340
submulzu2n	262549
subzi	18525207
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11959985
vectail_inplace	2090484

Generated by: LCOV version 1.16