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 30573-61accf17c8) Lines: 1336 1642 81.4 % Date: 2025-12-16 09:22:09 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656372
Babai_fast	30206108
Babai_heuristic	289747
GS_extraprec	4728484
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4848315
ZM_flatter	626970
ZM_flatter_rank	624956
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606686
ZM_is_lower	1205229
ZM_is_upper	4237466
ZM_lll_norms	7138290
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4107410
addmuliu642n	671548
addmuliu64_inplace	9582880
addmulziu	4580807
addmulzu2n	271563
addzi	17783702
affdbldpe	3207783
affdpe	25735840
affidpe	20757452
affii_or_copy_gc	1390576
cget_dblmat	8418555
cget_dblvec	34996753
cget_dpemat	3207795
cget_dpevec	13300016
condition_bound	4728485
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118240164
dbldotsquare	2481996
dblrotate	34644459
do_SWAPgen	196
dpeM_diagonal_shallow	20293
dpe_abscmp	14520104
dpe_abssmall	1390595
dpe_addmuluz	342912
dpe_addz	1943188
dpe_cmp	5264552
dpe_cmpmul	5264553
dpe_divz	14079613
dpe_muluz	799913
dpe_mulz	56974290
dpe_negz	244435
dpe_normalize	48117554
dpe_normalize0	108584081
dpe_submuluz	412454
dpe_submulz	51709880
dpe_subz	53741056
dperotate	652462
dpetor	94283
drop	1347447
flat	1347447
flattergram_i	2967
fplll	0
fplll_dpe	1603892
fplll_fast	2104640
fplll_flatter	625917
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44558
get_gramschmidt	1099059
gramschmidt_dynprec	2694891
gramschmidt_upper	1336
gsisinv	5196338
incrementalGSgen	168
itodbl_exp	162629807
kerint	42
kerint0	70
lll	1243391
lll_finish	2165347
lll_trivial	771749
lllall	36699
lllallgen	168
lllfp	5372584
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097852
mulshift	318943
nbits2prec64	7494413
pari_rint	10798090
potential	1347446
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31938891
rotateG	443711
rotateG_fast	11548174
setG2_fast	17030589
setG2_heuristic	188352
setG_fast	22662027
setG_heuristic	206374
set_line	24933831
sizered	1347447
spread	5853945
submuliu2n	4201179
submuliu642n	687471
submuliu64_inplace	9633716
submulshift	1507251
submulziu	5923648
submulzu2n	262549
subzi	18525100
truncexpo	12139
u64toi	19904067
u64toineg	671548
update_alpha	11992063
vectail_inplace	2091092

Generated by: LCOV version 1.16