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
Babai_dpe	4656368
Babai_fast	30149927
Babai_heuristic	288770
GS_extraprec	4727420
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848136
ZM_flatter	626870
ZM_flatter_rank	624856
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606702
ZM_is_lower	1205495
ZM_is_upper	4236825
ZM_lll_norms	7138106
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4084322
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580724
addmulzu2n	271563
addzi	17782819
affdbldpe	3207796
affdpe	25733704
affidpe	20757395
affii_or_copy_gc	1390402
cget_dblmat	8419032
cget_dblvec	35002947
cget_dpemat	3207806
cget_dpevec	13301310
condition_bound	4727420
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118047011
dbldotsquare	2482651
dblrotate	34556041
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519458
dpe_abssmall	1390416
dpe_addmuluz	342907
dpe_addz	1943119
dpe_cmp	5264652
dpe_cmpmul	5264651
dpe_divz	14079003
dpe_muluz	799875
dpe_mulz	56970436
dpe_negz	244414
dpe_normalize	48114912
dpe_normalize0	108578886
dpe_submuluz	412417
dpe_submulz	51705916
dpe_subz	53736967
dperotate	652348
dpetor	93774
drop	1347072
flat	1347071
flattergram_i	2967
fplll	0
fplll_dpe	1603902
fplll_fast	2104765
fplll_flatter	625817
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099277
gramschmidt_dynprec	2694143
gramschmidt_upper	1336
gsisinv	5195591
incrementalGSgen	168
itodbl_exp	162336372
kerint	28
kerint0	56
lll	1243425
lll_finish	2165368
lll_trivial	771768
lllall	36699
lllallgen	168
lllfp	5371412
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097166
mulshift	317610
nbits2prec64	7492780
pari_rint	10770508
potential	1347072
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31880552
rotateG	443223
rotateG_fast	11518710
setG2_fast	16988986
setG2_heuristic	187610
setG_fast	22620642
setG_heuristic	205626
set_line	24891841
sizered	1347072
spread	5853198
submuliu2n	4169279
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923263
submulzu2n	262549
subzi	18524423
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11962048
vectail_inplace	2091207

Generated by: LCOV version 1.16