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 30604-e5d817ee12) Lines: 1336 1642 81.4 % Date: 2026-01-08 09:21:40 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	20147
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244387
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	317718
dpe_addmuluz	342913
absrsmall2	402705
dpe_submuluz	412412
rotateG	443655
ZM_is_knapsack	606346
ZM_flatter_rank	624808
fplll_flatter	625769
ZM_flatter	626822
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	698128
lll_trivial	771700
dpe_muluz	799876
get_gramschmidt	1098806
realdotproduct	1186355
ZM_is_lower	1205077
lll	1243326
drop	1347019
flat	1347020
potential	1347020
sizered	1347021
affii_or_copy_gc	1390408
dpe_abssmall	1390411
submulshift	1501331
fplll_dpe	1603449
dpe_addz	1943121
vectail_inplace	2090334
fplll_fast	2103852
lll_finish	2164462
dbldotsquare	2481015
gramschmidt_dynprec	2694036
cget_dpemat	3206892
affdbldpe	3206895
addmuliu2n	4087836
mpabscmp	4096407
submuliu2n	4178438
ZM_is_upper	4236264
addmulziu	4580738
Babai_dpe	4655037
GS_extraprec	4727510
condition_bound	4727510
ZM2_lll_norms	4848480
gsisinv	5195263
dpe_cmpmul	5263369
dpe_cmp	5263372
lllfp	5371110
spread	5852507
submulziu	5923198
ZM_lll_norms	7137554
nbits2prec64	7492297
cget_dblmat	8415378
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10767877
rotateG_fast	11515321
update_alpha	11959065
cget_dpevec	13295769
dpe_divz	14076365
dpe_abscmp	14516826
setG2_fast	16984222
addzi	17782691
subzi	18524269
u64toi	19880176
affidpe	20752214
setG_fast	22612727
set_line	24883294
affdpe	25731105
Babai_fast	30142119
rotate	31872345
dblrotate	34545974
cget_dblvec	34983677
dpe_normalize	48111290
dpe_submulz	51703232
dpe_subz	53734269
dpe_mulz	56966452
dpe_normalize0	108568435
dbldotproduct	118038013
itodbl_exp	162372732

Generated by: LCOV version 1.16