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 30735-65f72320ad) Lines: 1336 1642 81.4 % Date: 2026-03-14 09:23:49 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	4244
fplll_heuristic	4244
gc_lll	4833
lllgram	9089
truncexpo	12138
ZC_to_RC	15945
dpeM_diagonal_shallow	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44538
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244382
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412418
rotateG	443224
ZM_is_knapsack	606396
ZM_flatter_rank	624820
fplll_flatter	625781
ZM_flatter	626834
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771768
dpe_muluz	799876
get_gramschmidt	1099264
realdotproduct	1183370
ZM_is_lower	1205486
lll	1243427
flat	1346895
potential	1346895
drop	1346896
sizered	1346896
dpe_abssmall	1390427
affii_or_copy_gc	1390433
submulshift	1499787
fplll_dpe	1603903
dpe_addz	1943120
vectail_inplace	2090889
fplll_fast	2104441
lll_finish	2165066
dbldotsquare	2482436
gramschmidt_dynprec	2693788
affdbldpe	3207803
cget_dpemat	3207807
addmuliu2n	4085295
mpabscmp	4095881
submuliu2n	4172411
ZM_is_upper	4236466
addmulziu	4580770
Babai_dpe	4656208
GS_extraprec	4726901
condition_bound	4726901
ZM2_lll_norms	4847940
gsisinv	5195094
dpe_cmpmul	5264498
dpe_cmp	5264501
lllfp	5370887
spread	5852387
submulziu	5923380
ZM_lll_norms	7137638
nbits2prec64	7491941
cget_dblmat	8417743
addmuliu64_inplace	9567325
submuliu64_inplace	9625851
pari_rint	10767612
rotateG_fast	11514795
update_alpha	11958151
cget_dpevec	13301216
dpe_divz	14078110
dpe_abscmp	14518529
setG2_fast	16982666
addzi	17783421
subzi	18525005
u64toi	19876621
affidpe	20756372
setG_fast	22612672
set_line	24884090
affdpe	25733035
Babai_fast	30139833
rotate	31868850
dblrotate	34544332
cget_dblvec	34994966
dpe_normalize	48110606
dpe_submulz	51701814
dpe_subz	53732951
dpe_mulz	56966202
dpe_normalize0	108569175
dbldotproduct	118009293
itodbl_exp	162287382

Generated by: LCOV version 1.16