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 30824-18397de1d0) Lines: 1336 1642 81.4 % Date: 2026-04-18 09:26:04 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656280
Babai_fast	30148699
Babai_heuristic	288770
GS_extraprec	4727168
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847809
ZM_flatter	626850
ZM_flatter_rank	624836
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606737
ZM_is_lower	1205477
ZM_is_upper	4236637
ZM_lll_norms	7137843
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4087543
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580717
addmulzu2n	271563
addzi	17782904
affdbldpe	3207767
affdpe	25733330
affidpe	20756880
affii_or_copy_gc	1390402
cget_dblmat	8419096
cget_dblvec	35001905
cget_dpemat	3207763
cget_dpevec	13300942
condition_bound	4727170
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118041364
dbldotsquare	2482587
dblrotate	34555142
do_SWAPgen	196
dpeM_diagonal_shallow	1547
dpe_abscmp	14519205
dpe_abssmall	1390412
dpe_addmuluz	342905
dpe_addz	1943106
dpe_cmp	5264580
dpe_cmpmul	5264572
dpe_divz	14078731
dpe_muluz	799871
dpe_mulz	56969212
dpe_negz	244406
dpe_normalize	48113875
dpe_normalize0	108576082
dpe_submuluz	412418
dpe_submulz	51704838
dpe_subz	53735812
dperotate	652345
dpetor	23604
drop	1346984
flat	1346984
flattergram_i	2967
fplll	0
fplll_dpe	1603886
fplll_fast	2104781
fplll_flatter	625797
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1099257
gramschmidt_dynprec	2693967
gramschmidt_upper	1336
gsisinv	5195344
incrementalGSgen	168
itodbl_exp	162315704
kerint	28
kerint0	56
lll	1243426
lll_finish	2165389
lll_trivial	771773
lllall	36699
lllallgen	168
lllfp	5371148
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096806
mulshift	317610
nbits2prec64	7492318
pari_rint	10770244
potential	1346983
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31879715
rotateG	443222
rotateG_fast	11518410
setG2_fast	16988296
setG2_heuristic	187610
setG_fast	22619573
setG_heuristic	205626
set_line	24891211
sizered	1346983
spread	5852976
submuliu2n	4173934
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923239
submulzu2n	262549
subzi	18524580
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11961758
vectail_inplace	2091223

Generated by: LCOV version 1.16