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: 2026-02-13 09:23:38 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	44538
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244394
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	317718
dpe_addmuluz	342912
absrsmall2	402705
dpe_submuluz	412410
rotateG	443655
ZM_is_knapsack	606305
ZM_flatter_rank	624827
fplll_flatter	625787
ZM_flatter	626842
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	698128
lll_trivial	771704
dpe_muluz	799872
get_gramschmidt	1098818
realdotproduct	1186355
ZM_is_lower	1205091
lll	1243329
sizered	1347109
drop	1347110
flat	1347110
potential	1347110
affii_or_copy_gc	1390411
dpe_abssmall	1390421
submulshift	1501331
fplll_dpe	1603455
dpe_addz	1943120
vectail_inplace	2090309
fplll_fast	2103818
lll_finish	2164437
dbldotsquare	2481006
gramschmidt_dynprec	2694219
affdbldpe	3206895
cget_dpemat	3206909
addmuliu2n	4088181
mpabscmp	4096622
submuliu2n	4179241
ZM_is_upper	4236466
addmulziu	4580759
Babai_dpe	4655060
GS_extraprec	4727739
condition_bound	4727739
ZM2_lll_norms	4848726
gsisinv	5195483
dpe_cmpmul	5263410
dpe_cmp	5263413
lllfp	5371383
spread	5852689
submulziu	5923268
ZM_lll_norms	7137800
nbits2prec64	7492714
cget_dblmat	8415259
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10768001
rotateG_fast	11515201
update_alpha	11958949
cget_dpevec	13295977
dpe_divz	14076448
dpe_abscmp	14516818
setG2_fast	16984101
addzi	17783144
subzi	18524727
u64toi	19880176
affidpe	20752422
setG_fast	22612594
set_line	24883113
affdpe	25731361
Babai_fast	30142036
rotate	31871987
dblrotate	34545558
cget_dblvec	34983452
dpe_normalize	48111410
dpe_submulz	51703553
dpe_subz	53734662
dpe_mulz	56966840
dpe_normalize0	108568833
dbldotproduct	118036669
itodbl_exp	162369425

Generated by: LCOV version 1.16