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 30574-595e4ba651) Lines: 1336 1642 81.4 % Date: 2025-12-17 09:21:45 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
matkerint0	28
lllgramkerim	35
lllkerim	35
kerint	42
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
qflllgram	63
kerint0	70
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	20294
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44559
RgM_is_square_mat	45828
dpetor	94285
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244449
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342909
absrsmall2	401466
dpe_submuluz	412453
rotateG	443280
ZM_is_knapsack	606783
ZM_flatter_rank	624960
fplll_flatter	625921
ZM_flatter	626974
dperotate	652460
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771748
dpe_muluz	799912
get_gramschmidt	1099077
realdotproduct	1183370
ZM_is_lower	1205245
lll	1243390
drop	1347476
potential	1347476
sizered	1347476
flat	1347477
affii_or_copy_gc	1390567
dpe_abssmall	1390586
submulshift	1507243
fplll_dpe	1603914
dpe_addz	1943175
vectail_inplace	2091203
fplll_fast	2104753
lll_finish	2165455
dbldotsquare	2482057
gramschmidt_dynprec	2694950
affdbldpe	3207828
cget_dpemat	3207828
mpabscmp	4098207
addmuliu2n	4104345
submuliu2n	4197246
ZM_is_upper	4237548
addmulziu	4580794
Babai_dpe	4656418
GS_extraprec	4728610
condition_bound	4728610
ZM2_lll_norms	4848285
gsisinv	5196473
dpe_cmpmul	5264593
dpe_cmp	5264601
lllfp	5372673
spread	5854173
submulziu	5923571
ZM_lll_norms	7138406
nbits2prec64	7494547
cget_dblmat	8418996
addmuliu64_inplace	9582880
submuliu64_inplace	9633716
pari_rint	10799463
rotateG_fast	11549522
update_alpha	11992957
cget_dpevec	13300130
dpe_divz	14079738
dpe_abscmp	14520276
setG2_fast	17032808
addzi	17783367
subzi	18524791
u64toi	19904067
affidpe	20757527
setG_fast	22664762
set_line	24936602
affdpe	25735960
Babai_fast	30209996
rotate	31940740
dblrotate	34648543
cget_dblvec	34999281
dpe_normalize	48117836
dpe_submulz	51710204
dpe_subz	53741172
dpe_mulz	56974592
dpe_normalize0	108584536
dbldotproduct	118252148
itodbl_exp	162636598

Generated by: LCOV version 1.16