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 30773-2078653b96) Lines: 1336 1642 81.4 % Date: 2026-04-02 09:26:53 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
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	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244414
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412417
rotateG	443223
ZM_is_knapsack	606702
ZM_flatter_rank	624856
fplll_flatter	625817
ZM_flatter	626870
dperotate	652348
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771768
dpe_muluz	799875
get_gramschmidt	1099277
realdotproduct	1183370
ZM_is_lower	1205495
lll	1243425
flat	1347071
drop	1347072
potential	1347072
sizered	1347072
affii_or_copy_gc	1390402
dpe_abssmall	1390416
submulshift	1499787
fplll_dpe	1603902
dpe_addz	1943119
vectail_inplace	2091207
fplll_fast	2104765
lll_finish	2165368
dbldotsquare	2482651
gramschmidt_dynprec	2694143
affdbldpe	3207796
cget_dpemat	3207806
addmuliu2n	4084322
mpabscmp	4097166
submuliu2n	4169279
ZM_is_upper	4236825
addmulziu	4580724
Babai_dpe	4656368
GS_extraprec	4727420
condition_bound	4727420
ZM2_lll_norms	4848136
gsisinv	5195591
dpe_cmpmul	5264651
dpe_cmp	5264652
lllfp	5371412
spread	5853198
submulziu	5923263
ZM_lll_norms	7138106
nbits2prec64	7492780
cget_dblmat	8419032
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10770508
rotateG_fast	11518710
update_alpha	11962048
cget_dpevec	13301310
dpe_divz	14079003
dpe_abscmp	14519458
setG2_fast	16988986
addzi	17782819
subzi	18524423
u64toi	19876486
affidpe	20757395
setG_fast	22620642
set_line	24891841
affdpe	25733704
Babai_fast	30149927
rotate	31880552
dblrotate	34556041
cget_dblvec	35002947
dpe_normalize	48114912
dpe_submulz	51705916
dpe_subz	53736967
dpe_mulz	56970436
dpe_normalize0	108578886
dbldotproduct	118047011
itodbl_exp	162336372

Generated by: LCOV version 1.16