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 30548-ec77dc363d) Lines: 1335 1641 81.4 % Date: 2025-11-14 09:22:38 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	4244
fplll_heuristic	4244
gc_lll	4833
lllgram	9089
truncexpo	12138
ZC_to_RC	15945
dpeM_diagonal_shallow	20287
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44560
RgM_is_square_mat	45828
dpetor	94269
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244441
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412454
rotateG	443280
ZM_is_knapsack	606489
ZM_flatter_rank	624505
fplll_flatter	625466
ZM_flatter	626519
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771736
dpe_muluz	799918
get_gramschmidt	1098387
realdotproduct	1183370
ZM_is_lower	1204572
lll	1243328
drop	1346059
flat	1346060
potential	1346060
sizered	1346061
affii_or_copy_gc	1390585
dpe_abssmall	1390603
submulshift	1507243
fplll_dpe	1603199
dpe_addz	1943187
vectail_inplace	2090185
fplll_fast	2103719
lll_finish	2164409
dbldotsquare	2480780
gramschmidt_dynprec	2692118
affdbldpe	3206395
cget_dpemat	3206405
mpabscmp	4093671
addmuliu2n	4104787
submuliu2n	4197208
ZM_is_upper	4234008
addmulziu	4580880
Babai_dpe	4654319
GS_extraprec	4725129
condition_bound	4725129
ZM2_lll_norms	4843942
gsisinv	5192756
dpe_cmpmul	5262516
dpe_cmp	5262528
lllfp	5368335
spread	5850170
submulziu	5923708
ZM_lll_norms	7133003
nbits2prec64	7487204
cget_dblmat	8414869
addmuliu64_inplace	9581364
submuliu64_inplace	9632106
pari_rint	10795193
rotateG_fast	11545914
update_alpha	11989320
cget_dpevec	13293205
dpe_divz	14075462
dpe_abscmp	14515945
setG2_fast	17027359
addzi	17783849
subzi	18525282
u64toi	19900941
affidpe	20750230
setG_fast	22656361
set_line	24926616
affdpe	25731657
Babai_fast	30201272
rotate	31930022
dblrotate	34637719
cget_dblvec	34980705
dpe_normalize	48109374
dpe_submulz	51703079
dpe_subz	53734264
dpe_mulz	56965472
dpe_normalize0	108562996
dbldotproduct	118225194
itodbl_exp	162614127

Generated by: LCOV version 1.16