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
Babai_dpe	4655024
Babai_fast	30139828
Babai_heuristic	289747
GS_extraprec	4727533
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4848606
ZM_flatter	626826
ZM_flatter_rank	624812
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606249
ZM_is_lower	1205085
ZM_is_upper	4236318
ZM_lll_norms	7137617
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4089416
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580775
addmulzu2n	271563
addzi	17783077
affdbldpe	3206919
affdpe	25731138
affidpe	20752177
affii_or_copy_gc	1390407
cget_dblmat	8415029
cget_dblvec	34981236
cget_dpemat	3206915
cget_dpevec	13295788
condition_bound	4727533
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118030189
dbldotsquare	2480900
dblrotate	34543238
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516685
dpe_abssmall	1390427
dpe_addmuluz	342913
dpe_addz	1943123
dpe_cmp	5263386
dpe_cmpmul	5263379
dpe_divz	14076286
dpe_muluz	799874
dpe_mulz	56965850
dpe_negz	244376
dpe_normalize	48110526
dpe_normalize0	108566813
dpe_submuluz	412412
dpe_submulz	51702608
dpe_subz	53733668
dperotate	652350
dpetor	93802
drop	1347040
flat	1347040
flattergram_i	2967
fplll	0
fplll_dpe	1603461
fplll_fast	2103747
fplll_flatter	625773
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44537
get_gramschmidt	1098813
gramschmidt_dynprec	2694080
gramschmidt_upper	1336
gsisinv	5195287
incrementalGSgen	168
itodbl_exp	162354234
kerint	42
kerint0	70
lll	1243328
lll_finish	2164378
lll_trivial	771701
lllall	36699
lllallgen	168
lllfp	5371175
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096198
mulshift	317718
nbits2prec64	7492425
pari_rint	10767082
potential	1347040
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31869665
rotateG	443655
rotateG_fast	11514419
setG2_fast	16982737
setG2_heuristic	188352
setG_fast	22610802
setG_heuristic	206374
set_line	24881054
sizered	1347040
spread	5852435
submuliu2n	4181478
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501331
submulziu	5923305
submulzu2n	262549
subzi	18524482
truncexpo	12139
u64toi	19880176
u64toineg	668454
update_alpha	11958180
vectail_inplace	2090250

Generated by: LCOV version 1.16