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 30735-65f72320ad) Lines: 1336 1642 81.4 % Date: 2026-03-11 09:24:10 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	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244403
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412418
rotateG	443224
ZM_is_knapsack	606596
ZM_flatter_rank	624849
fplll_flatter	625810
ZM_flatter	626863
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771769
dpe_muluz	799876
get_gramschmidt	1099300
realdotproduct	1183370
ZM_is_lower	1205521
lll	1243427
drop	1347042
flat	1347044
potential	1347044
sizered	1347044
affii_or_copy_gc	1390423
dpe_abssmall	1390435
submulshift	1499787
fplll_dpe	1603937
dpe_addz	1943118
vectail_inplace	2091125
fplll_fast	2104684
lll_finish	2165300
dbldotsquare	2482494
gramschmidt_dynprec	2694086
affdbldpe	3207872
cget_dpemat	3207877
addmuliu2n	4088573
mpabscmp	4096803
submuliu2n	4174854
ZM_is_upper	4236797
addmulziu	4580754
Babai_dpe	4656402
GS_extraprec	4727318
condition_bound	4727322
ZM2_lll_norms	4848139
gsisinv	5195522
dpe_cmpmul	5264691
dpe_cmp	5264694
lllfp	5371334
spread	5853012
submulziu	5923376
ZM_lll_norms	7138060
nbits2prec64	7492724
cget_dblmat	8418721
addmuliu64_inplace	9567325
submuliu64_inplace	9625851
pari_rint	10769648
rotateG_fast	11518136
update_alpha	11961461
cget_dpevec	13301328
dpe_divz	14079038
dpe_abscmp	14519436
setG2_fast	16988043
addzi	17783530
subzi	18525232
u64toi	19876621
affidpe	20757448
setG_fast	22619229
set_line	24891368
affdpe	25734049
Babai_fast	30148611
rotate	31878838
dblrotate	34554381
cget_dblvec	35000152
dpe_normalize	48114544
dpe_submulz	51705754
dpe_subz	53736930
dpe_mulz	56970369
dpe_normalize0	108578324
dbldotproduct	118045120
itodbl_exp	162359410

Generated by: LCOV version 1.16