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 30793-1ceee7ca5f) Lines: 1336 1642 81.4 % Date: 2026-04-10 09:27:03 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656388
Babai_fast	30151513
Babai_heuristic	288770
GS_extraprec	4727453
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847980
ZM_flatter	626870
ZM_flatter_rank	624856
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606870
ZM_is_lower	1205489
ZM_is_upper	4236829
ZM_lll_norms	7138117
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4087264
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580738
addmulzu2n	271563
addzi	17783059
affdbldpe	3207793
affdpe	25733737
affidpe	20757641
affii_or_copy_gc	1390424
cget_dblmat	8419692
cget_dblvec	35005454
cget_dpemat	3207796
cget_dpevec	13301488
condition_bound	4727452
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118049600
dbldotsquare	2482879
dblrotate	34558505
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519605
dpe_abssmall	1390428
dpe_addmuluz	342907
dpe_addz	1943119
dpe_cmp	5264677
dpe_cmpmul	5264675
dpe_divz	14079167
dpe_muluz	799876
dpe_mulz	56970675
dpe_negz	244395
dpe_normalize	48115300
dpe_normalize0	108579773
dpe_submuluz	412418
dpe_submulz	51706169
dpe_subz	53737276
dperotate	652350
dpetor	93774
drop	1347073
flat	1347074
flattergram_i	2967
fplll	0
fplll_dpe	1603899
fplll_fast	2104928
fplll_flatter	625817
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099270
gramschmidt_dynprec	2694146
gramschmidt_upper	1336
gsisinv	5195611
incrementalGSgen	168
itodbl_exp	162335333
kerint	28
kerint0	56
lll	1243426
lll_finish	2165536
lll_trivial	771772
lllall	36699
lllallgen	168
lllfp	5371420
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097253
mulshift	317610
nbits2prec64	7492750
pari_rint	10771456
potential	1347073
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31883006
rotateG	443224
rotateG_fast	11519514
setG2_fast	16989988
setG2_heuristic	187610
setG_fast	22622016
setG_heuristic	205626
set_line	24893420
sizered	1347073
spread	5853386
submuliu2n	4173183
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923356
submulzu2n	262549
subzi	18524733
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11962857
vectail_inplace	2091374

Generated by: LCOV version 1.16