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 30773-2078653b96) Lines: 1336 1642 81.4 % Date: 2026-04-01 09:27:34 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
kerint	28
matkerint0	28
lllgramkerim	35
lllkerim	35
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
kerint0	56
qflllgram	63
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	44539
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244383
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342906
absrsmall2	401466
dpe_submuluz	412418
rotateG	443223
ZM_is_knapsack	606557
ZM_flatter_rank	624829
fplll_flatter	625790
ZM_flatter	626843
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771767
dpe_muluz	799874
get_gramschmidt	1099252
realdotproduct	1183370
ZM_is_lower	1205477
lll	1243426
sizered	1346926
drop	1346927
flat	1346927
potential	1346927
affii_or_copy_gc	1390410
dpe_abssmall	1390419
submulshift	1499787
fplll_dpe	1603894
dpe_addz	1943114
vectail_inplace	2091050
fplll_fast	2104600
lll_finish	2165216
dbldotsquare	2482285
gramschmidt_dynprec	2693853
cget_dpemat	3207777
affdbldpe	3207781
addmuliu2n	4085650
mpabscmp	4096531
submuliu2n	4170937
ZM_is_upper	4236524
addmulziu	4580736
Babai_dpe	4656264
GS_extraprec	4727035
condition_bound	4727035
ZM2_lll_norms	4847821
gsisinv	5195217
dpe_cmpmul	5264554
dpe_cmp	5264559
lllfp	5370985
spread	5852673
submulziu	5923333
ZM_lll_norms	7137575
nbits2prec64	7492042
cget_dblmat	8418383
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10769176
rotateG_fast	11517691
update_alpha	11960990
cget_dpevec	13300656
dpe_divz	14078704
dpe_abscmp	14519102
setG2_fast	16987409
addzi	17782996
subzi	18524638
u64toi	19876486
affidpe	20756736
setG_fast	22618436
set_line	24890108
affdpe	25733394
Babai_fast	30147573
rotate	31877485
dblrotate	34553040
cget_dblvec	34998983
dpe_normalize	48114131
dpe_submulz	51705069
dpe_subz	53736166
dpe_mulz	56969470
dpe_normalize0	108576903
dbldotproduct	118040776
itodbl_exp	162356562

Generated by: LCOV version 1.16