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 30586-ccf601f509) Lines: 1336 1642 81.4 % Date: 2025-12-25 09:21:36 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	20147
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244388
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412411
rotateG	443224
ZM_is_knapsack	606516
ZM_flatter_rank	624826
fplll_flatter	625787
ZM_flatter	626840
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771690
dpe_muluz	799874
get_gramschmidt	1098820
realdotproduct	1183370
ZM_is_lower	1205091
lll	1243314
drop	1347134
flat	1347134
potential	1347134
sizered	1347135
affii_or_copy_gc	1390419
dpe_abssmall	1390425
submulshift	1501323
fplll_dpe	1603385
dpe_addz	1943128
vectail_inplace	2090448
fplll_fast	2103965
lll_finish	2164577
dbldotsquare	2481077
gramschmidt_dynprec	2694266
affdbldpe	3206766
cget_dpemat	3206776
addmuliu2n	4087366
mpabscmp	4096969
submuliu2n	4178173
ZM_is_upper	4236438
addmulziu	4580808
Babai_dpe	4655069
GS_extraprec	4727830
condition_bound	4727830
ZM2_lll_norms	4847499
gsisinv	5195575
dpe_cmpmul	5263407
dpe_cmp	5263412
lllfp	5371441
spread	5852985
submulziu	5923331
ZM_lll_norms	7136708
nbits2prec64	7492839
cget_dblmat	8415852
addmuliu64_inplace	9572959
submuliu64_inplace	9623916
pari_rint	10775462
rotateG_fast	11522682
update_alpha	11965980
cget_dpevec	13295669
dpe_divz	14076665
dpe_abscmp	14517120
setG2_fast	16992290
addzi	17783141
subzi	18524769
u64toi	19881520
affidpe	20752489
setG_fast	22621106
set_line	24891919
affdpe	25731558
Babai_fast	30151831
rotate	31886008
dblrotate	34567969
cget_dblvec	34986515
dpe_normalize	48112260
dpe_submulz	51704435
dpe_subz	53735518
dpe_mulz	56967728
dpe_normalize0	108570875
dbldotproduct	118060197
itodbl_exp	162385200

Generated by: LCOV version 1.16