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 30762-238ab8e6c0) Lines: 1336 1642 81.4 % Date: 2026-03-22 09:27:12 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
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	20139
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93772
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244392
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412417
rotateG	443224
ZM_is_knapsack	606454
ZM_flatter_rank	624858
fplll_flatter	625818
ZM_flatter	626872
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771777
dpe_muluz	799874
get_gramschmidt	1099295
realdotproduct	1183370
ZM_is_lower	1205512
lll	1243424
drop	1347059
potential	1347059
flat	1347060
sizered	1347060
affii_or_copy_gc	1390422
dpe_abssmall	1390428
submulshift	1499787
fplll_dpe	1603926
dpe_addz	1943118
vectail_inplace	2090970
fplll_fast	2104529
lll_finish	2165140
dbldotsquare	2482541
gramschmidt_dynprec	2694118
cget_dpemat	3207850
affdbldpe	3207851
addmuliu2n	4087158
mpabscmp	4096444
submuliu2n	4173825
ZM_is_upper	4236825
addmulziu	4580751
Babai_dpe	4656303
GS_extraprec	4727353
condition_bound	4727353
ZM2_lll_norms	4848316
gsisinv	5195539
dpe_cmpmul	5264605
dpe_cmp	5264610
lllfp	5371380
spread	5852888
submulziu	5923385
ZM_lll_norms	7138096
nbits2prec64	7492706
cget_dblmat	8418097
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10768993
rotateG_fast	11515924
update_alpha	11959193
cget_dpevec	13301553
dpe_divz	14078421
dpe_abscmp	14518824
setG2_fast	16984338
addzi	17783459
subzi	18525001
u64toi	19876486
affidpe	20756946
setG_fast	22614910
set_line	24887014
affdpe	25733177
Babai_fast	30142512
rotate	31872143
dblrotate	34547735
cget_dblvec	34996715
dpe_normalize	48111563
dpe_submulz	51702532
dpe_subz	53733650
dpe_mulz	56967042
dpe_normalize0	108571526
dbldotproduct	118020362
itodbl_exp	162347737

Generated by: LCOV version 1.16