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

Generated by: LCOV version 1.16