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
Babai_dpe	4655202
Babai_fast	30147842
Babai_heuristic	288770
GS_extraprec	4728090
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848794
ZM_flatter	626864
ZM_flatter_rank	624850
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606622
ZM_is_lower	1205121
ZM_is_upper	4236715
ZM_lll_norms	7138170
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4087581
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580811
addmulzu2n	271563
addzi	17783384
affdbldpe	3206970
affdpe	25731915
affidpe	20753149
affii_or_copy_gc	1390410
cget_dblmat	8416654
cget_dblvec	34990321
cget_dpemat	3206963
cget_dpevec	13296480
condition_bound	4728089
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118055308
dbldotsquare	2481439
dblrotate	34552556
do_SWAPgen	196
dpeM_diagonal_shallow	20146
dpe_abscmp	14517397
dpe_abssmall	1390426
dpe_addmuluz	342913
dpe_addz	1943124
dpe_cmp	5263571
dpe_cmpmul	5263558
dpe_divz	14076994
dpe_muluz	799876
dpe_mulz	56968561
dpe_negz	244398
dpe_normalize	48113085
dpe_normalize0	108572895
dpe_submuluz	412412
dpe_submulz	51705121
dpe_subz	53736244
dperotate	652349
dpetor	93800
drop	1347223
flat	1347224
flattergram_i	2967
fplll	0
fplll_dpe	1603489
fplll_fast	2104168
fplll_flatter	625811
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1098845
gramschmidt_dynprec	2694448
gramschmidt_upper	1336
gsisinv	5195845
incrementalGSgen	168
itodbl_exp	162397672
kerint	42
kerint0	70
lll	1243329
lll_finish	2164774
lll_trivial	771707
lllall	36699
lllallgen	168
lllfp	5371727
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097384
mulshift	317717
nbits2prec64	7493269
pari_rint	10770142
potential	1347224
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31876824
rotateG	443223
rotateG_fast	11517534
setG2_fast	16987577
setG2_heuristic	187610
setG_fast	22617206
setG_heuristic	205626
set_line	24888467
sizered	1347223
spread	5853362
submuliu2n	4178747
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923253
submulzu2n	262549
subzi	18525002
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11960820
vectail_inplace	2090645

Generated by: LCOV version 1.16