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 30584-b9873745ba) Lines: 1336 1642 81.4 % Date: 2025-12-22 09:21:19 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	44538
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244392
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412411
rotateG	443224
ZM_is_knapsack	606709
ZM_flatter_rank	624855
fplll_flatter	625816
ZM_flatter	626869
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771697
dpe_muluz	799875
get_gramschmidt	1098850
realdotproduct	1183370
ZM_is_lower	1205121
lll	1243322
drop	1347222
flat	1347222
potential	1347223
sizered	1347223
affii_or_copy_gc	1390419
dpe_abssmall	1390424
submulshift	1501323
fplll_dpe	1603415
dpe_addz	1943128
vectail_inplace	2090665
fplll_fast	2104180
lll_finish	2164794
dbldotsquare	2481342
gramschmidt_dynprec	2694444
cget_dpemat	3206823
affdbldpe	3206826
addmuliu2n	4087164
mpabscmp	4097501
submuliu2n	4178298
ZM_is_upper	4236646
addmulziu	4580808
Babai_dpe	4655184
GS_extraprec	4728140
condition_bound	4728140
ZM2_lll_norms	4847689
gsisinv	5195880
dpe_cmpmul	5263524
dpe_cmp	5263529
lllfp	5371716
spread	5853490
submulziu	5923344
ZM_lll_norms	7137112
nbits2prec64	7493273
cget_dblmat	8416723
addmuliu64_inplace	9573025
submuliu64_inplace	9624052
pari_rint	10777736
rotateG_fast	11524476
update_alpha	11967801
cget_dpevec	13296011
dpe_divz	14077051
dpe_abscmp	14517463
setG2_fast	16995058
addzi	17783356
subzi	18524928
u64toi	19881722
affidpe	20753043
setG_fast	22624545
set_line	24895737
affdpe	25731955
Babai_fast	30155756
rotate	31891421
dblrotate	34573337
cget_dblvec	34990862
dpe_normalize	48113263
dpe_submulz	51705405
dpe_subz	53736533
dpe_mulz	56968821
dpe_normalize0	108573355
dbldotproduct	118069563
itodbl_exp	162391590

Generated by: LCOV version 1.16