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: 2026-02-09 09:23:39 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	44537
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244376
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	317718
dpe_addmuluz	342913
absrsmall2	402705
dpe_submuluz	412412
rotateG	443655
ZM_is_knapsack	606249
ZM_flatter_rank	624812
fplll_flatter	625773
ZM_flatter	626826
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	698128
lll_trivial	771701
dpe_muluz	799874
get_gramschmidt	1098813
realdotproduct	1186355
ZM_is_lower	1205085
lll	1243328
drop	1347040
flat	1347040
potential	1347040
sizered	1347040
affii_or_copy_gc	1390407
dpe_abssmall	1390427
submulshift	1501331
fplll_dpe	1603461
dpe_addz	1943123
vectail_inplace	2090250
fplll_fast	2103747
lll_finish	2164378
dbldotsquare	2480900
gramschmidt_dynprec	2694080
cget_dpemat	3206915
affdbldpe	3206919
addmuliu2n	4089416
mpabscmp	4096198
submuliu2n	4181478
ZM_is_upper	4236318
addmulziu	4580775
Babai_dpe	4655024
GS_extraprec	4727533
condition_bound	4727533
ZM2_lll_norms	4848606
gsisinv	5195287
dpe_cmpmul	5263379
dpe_cmp	5263386
lllfp	5371175
spread	5852435
submulziu	5923305
ZM_lll_norms	7137617
nbits2prec64	7492425
cget_dblmat	8415029
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10767082
rotateG_fast	11514419
update_alpha	11958180
cget_dpevec	13295788
dpe_divz	14076286
dpe_abscmp	14516685
setG2_fast	16982737
addzi	17783077
subzi	18524482
u64toi	19880176
affidpe	20752177
setG_fast	22610802
set_line	24881054
affdpe	25731138
Babai_fast	30139828
rotate	31869665
dblrotate	34543238
cget_dblvec	34981236
dpe_normalize	48110526
dpe_submulz	51702608
dpe_subz	53733668
dpe_mulz	56965850
dpe_normalize0	108566813
dbldotproduct	118030189
itodbl_exp	162354234

Generated by: LCOV version 1.16