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 30831-19b50a36d0) Lines: 1336 1642 81.4 % Date: 2026-04-23 09:26:12 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
dpeM_diagonal_shallow	1547
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
dpetor	23604
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244403
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342906
absrsmall2	401466
dpe_submuluz	412416
rotateG	443224
ZM_is_knapsack	606627
ZM_flatter_rank	624828
fplll_flatter	625789
ZM_flatter	626842
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771768
dpe_muluz	799868
get_gramschmidt	1099257
realdotproduct	1183370
ZM_is_lower	1205473
lll	1243427
drop	1346973
potential	1346975
flat	1346977
sizered	1346977
affii_or_copy_gc	1390418
dpe_abssmall	1390425
submulshift	1499787
fplll_dpe	1603885
dpe_addz	1943120
vectail_inplace	2091120
fplll_fast	2104662
lll_finish	2165285
dbldotsquare	2482571
gramschmidt_dynprec	2693953
affdbldpe	3207763
cget_dpemat	3207776
addmuliu2n	4082731
mpabscmp	4096548
submuliu2n	4168283
ZM_is_upper	4236609
addmulziu	4580734
Babai_dpe	4656235
GS_extraprec	4727151
condition_bound	4727151
ZM2_lll_norms	4847850
gsisinv	5195327
dpe_cmpmul	5264520
dpe_cmp	5264522
lllfp	5371136
spread	5852855
submulziu	5923388
ZM_lll_norms	7137762
nbits2prec64	7492306
cget_dblmat	8418644
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10769160
rotateG_fast	11515958
update_alpha	11959357
cget_dpevec	13301145
dpe_divz	14078387
dpe_abscmp	14518851
setG2_fast	16984553
addzi	17783244
subzi	18524930
u64toi	19876486
affidpe	20756604
setG_fast	22615261
set_line	24886863
affdpe	25733088
Babai_fast	30142794
rotate	31872437
dblrotate	34547858
cget_dblvec	34999597
dpe_normalize	48112033
dpe_submulz	51703083
dpe_subz	53734171
dpe_mulz	56967462
dpe_normalize0	108572286
dbldotproduct	118014988
itodbl_exp	162258096

Generated by: LCOV version 1.16