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 30775-9d8a55740a) Lines: 1336 1642 81.4 % Date: 2026-04-06 09:26:18 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	44538
RgM_is_square_mat	45828
dpetor	93772
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244401
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412416
rotateG	443223
ZM_is_knapsack	606637
ZM_flatter_rank	624849
fplll_flatter	625810
ZM_flatter	626863
dperotate	652348
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771771
dpe_muluz	799874
get_gramschmidt	1099279
realdotproduct	1183370
ZM_is_lower	1205496
lll	1243426
drop	1347047
potential	1347048
flat	1347049
sizered	1347050
affii_or_copy_gc	1390398
dpe_abssmall	1390412
submulshift	1499787
fplll_dpe	1603907
dpe_addz	1943111
vectail_inplace	2091143
fplll_fast	2104701
lll_finish	2165307
dbldotsquare	2482428
gramschmidt_dynprec	2694097
affdbldpe	3207809
cget_dpemat	3207811
addmuliu2n	4084757
mpabscmp	4097002
submuliu2n	4169705
ZM_is_upper	4236784
addmulziu	4580728
Babai_dpe	4656316
GS_extraprec	4727330
condition_bound	4727330
ZM2_lll_norms	4848101
gsisinv	5195507
dpe_cmpmul	5264619
dpe_cmp	5264624
lllfp	5371353
spread	5853039
submulziu	5923233
ZM_lll_norms	7138013
nbits2prec64	7492641
cget_dblmat	8418788
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10769697
rotateG_fast	11518171
update_alpha	11961587
cget_dpevec	13300875
dpe_divz	14078856
dpe_abscmp	14519347
setG2_fast	16988235
addzi	17782771
subzi	18524416
u64toi	19876486
affidpe	20756959
setG_fast	22619516
set_line	24890924
affdpe	25733503
Babai_fast	30148982
rotate	31878997
dblrotate	34554492
cget_dblvec	35001109
dpe_normalize	48114573
dpe_submulz	51705519
dpe_subz	53736603
dpe_mulz	56969961
dpe_normalize0	108577718
dbldotproduct	118041117
itodbl_exp	162309624

Generated by: LCOV version 1.16