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
Babai_dpe	4656303
Babai_fast	30142512
Babai_heuristic	288770
GS_extraprec	4727353
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848316
ZM_flatter	626872
ZM_flatter_rank	624858
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606454
ZM_is_lower	1205512
ZM_is_upper	4236825
ZM_lll_norms	7138096
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4087158
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580751
addmulzu2n	271563
addzi	17783459
affdbldpe	3207851
affdpe	25733177
affidpe	20756946
affii_or_copy_gc	1390422
cget_dblmat	8418097
cget_dblvec	34996715
cget_dpemat	3207850
cget_dpevec	13301553
condition_bound	4727353
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118020362
dbldotsquare	2482541
dblrotate	34547735
do_SWAPgen	196
dpeM_diagonal_shallow	20139
dpe_abscmp	14518824
dpe_abssmall	1390428
dpe_addmuluz	342907
dpe_addz	1943118
dpe_cmp	5264610
dpe_cmpmul	5264605
dpe_divz	14078421
dpe_muluz	799874
dpe_mulz	56967042
dpe_negz	244392
dpe_normalize	48111563
dpe_normalize0	108571526
dpe_submuluz	412417
dpe_submulz	51702532
dpe_subz	53733650
dperotate	652350
dpetor	93772
drop	1347059
flat	1347060
flattergram_i	2967
fplll	0
fplll_dpe	1603926
fplll_fast	2104529
fplll_flatter	625818
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099295
gramschmidt_dynprec	2694118
gramschmidt_upper	1336
gsisinv	5195539
incrementalGSgen	168
itodbl_exp	162347737
kerint	28
kerint0	56
lll	1243424
lll_finish	2165140
lll_trivial	771777
lllall	36699
lllallgen	168
lllfp	5371380
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096444
mulshift	317610
nbits2prec64	7492706
pari_rint	10768993
potential	1347059
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31872143
rotateG	443224
rotateG_fast	11515924
setG2_fast	16984338
setG2_heuristic	187610
setG_fast	22614910
setG_heuristic	205626
set_line	24887014
sizered	1347060
spread	5852888
submuliu2n	4173825
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923385
submulzu2n	262549
subzi	18525001
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11959193
vectail_inplace	2090970

Generated by: LCOV version 1.16