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
Babai_dpe	4656235
Babai_fast	30142794
Babai_heuristic	288770
GS_extraprec	4727151
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847850
ZM_flatter	626842
ZM_flatter_rank	624828
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606627
ZM_is_lower	1205473
ZM_is_upper	4236609
ZM_lll_norms	7137762
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4082731
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580734
addmulzu2n	271563
addzi	17783244
affdbldpe	3207763
affdpe	25733088
affidpe	20756604
affii_or_copy_gc	1390418
cget_dblmat	8418644
cget_dblvec	34999597
cget_dpemat	3207776
cget_dpevec	13301145
condition_bound	4727151
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118014988
dbldotsquare	2482571
dblrotate	34547858
do_SWAPgen	196
dpeM_diagonal_shallow	1547
dpe_abscmp	14518851
dpe_abssmall	1390425
dpe_addmuluz	342906
dpe_addz	1943120
dpe_cmp	5264522
dpe_cmpmul	5264520
dpe_divz	14078387
dpe_muluz	799868
dpe_mulz	56967462
dpe_negz	244403
dpe_normalize	48112033
dpe_normalize0	108572286
dpe_submuluz	412416
dpe_submulz	51703083
dpe_subz	53734171
dperotate	652350
dpetor	23604
drop	1346973
flat	1346977
flattergram_i	2967
fplll	0
fplll_dpe	1603885
fplll_fast	2104662
fplll_flatter	625789
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099257
gramschmidt_dynprec	2693953
gramschmidt_upper	1336
gsisinv	5195327
incrementalGSgen	168
itodbl_exp	162258096
kerint	28
kerint0	56
lll	1243427
lll_finish	2165285
lll_trivial	771768
lllall	36699
lllallgen	168
lllfp	5371136
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096548
mulshift	317610
nbits2prec64	7492306
pari_rint	10769160
potential	1346975
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31872437
rotateG	443224
rotateG_fast	11515958
setG2_fast	16984553
setG2_heuristic	187610
setG_fast	22615261
setG_heuristic	205626
set_line	24886863
sizered	1346977
spread	5852855
submuliu2n	4168283
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923388
submulzu2n	262549
subzi	18524930
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11959357
vectail_inplace	2091120

Generated by: LCOV version 1.16