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 30658-0716cf3506) Lines: 1336 1642 81.4 % Date: 2026-01-31 09:22:40 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	20146
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44538
RgM_is_square_mat	45828
dpetor	93800
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244398
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412412
rotateG	443223
ZM_is_knapsack	606622
ZM_flatter_rank	624850
fplll_flatter	625811
ZM_flatter	626864
dperotate	652349
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771707
dpe_muluz	799876
get_gramschmidt	1098845
realdotproduct	1183370
ZM_is_lower	1205121
lll	1243329
drop	1347223
sizered	1347223
flat	1347224
potential	1347224
affii_or_copy_gc	1390410
dpe_abssmall	1390426
submulshift	1501323
fplll_dpe	1603489
dpe_addz	1943124
vectail_inplace	2090645
fplll_fast	2104168
lll_finish	2164774
dbldotsquare	2481439
gramschmidt_dynprec	2694448
cget_dpemat	3206963
affdbldpe	3206970
addmuliu2n	4087581
mpabscmp	4097384
submuliu2n	4178747
ZM_is_upper	4236715
addmulziu	4580811
Babai_dpe	4655202
condition_bound	4728089
GS_extraprec	4728090
ZM2_lll_norms	4848794
gsisinv	5195845
dpe_cmpmul	5263558
dpe_cmp	5263571
lllfp	5371727
spread	5853362
submulziu	5923253
ZM_lll_norms	7138170
nbits2prec64	7493269
cget_dblmat	8416654
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10770142
rotateG_fast	11517534
update_alpha	11960820
cget_dpevec	13296480
dpe_divz	14076994
dpe_abscmp	14517397
setG2_fast	16987577
addzi	17783384
subzi	18525002
u64toi	19880176
affidpe	20753149
setG_fast	22617206
set_line	24888467
affdpe	25731915
Babai_fast	30147842
rotate	31876824
dblrotate	34552556
cget_dblvec	34990321
dpe_normalize	48113085
dpe_submulz	51705121
dpe_subz	53736244
dpe_mulz	56968561
dpe_normalize0	108572895
dbldotproduct	118055308
itodbl_exp	162397672

Generated by: LCOV version 1.16