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 30571-c0dfe82732) Lines: 1336 1642 81.4 % Date: 2025-12-05 09:21:30 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	4246
fplll_heuristic	4246
gc_lll	4835
lllgram	9089
truncexpo	12139
ZC_to_RC	15952
dpeM_diagonal_shallow	20293
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44560
RgM_is_square_mat	45828
dpetor	94281
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244443
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	318943
dpe_addmuluz	342913
absrsmall2	402705
dpe_submuluz	412454
rotateG	443711
ZM_is_knapsack	606799
ZM_flatter_rank	624949
fplll_flatter	625910
ZM_flatter	626963
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	698128
lll_trivial	771749
dpe_muluz	799918
get_gramschmidt	1099064
realdotproduct	1186355
ZM_is_lower	1205229
lll	1243391
drop	1347407
potential	1347408
flat	1347410
sizered	1347410
affii_or_copy_gc	1390588
dpe_abssmall	1390599
submulshift	1507251
fplll_dpe	1603906
dpe_addz	1943186
vectail_inplace	2091217
fplll_fast	2104766
lll_finish	2165467
dbldotsquare	2482078
gramschmidt_dynprec	2694819
affdbldpe	3207806
cget_dpemat	3207807
mpabscmp	4097876
addmuliu2n	4106743
submuliu2n	4200875
ZM_is_upper	4237398
addmulziu	4580815
Babai_dpe	4656383
GS_extraprec	4728411
condition_bound	4728411
ZM2_lll_norms	4848105
gsisinv	5196266
dpe_cmpmul	5264562
dpe_cmp	5264564
lllfp	5372475
spread	5853989
submulziu	5923641
ZM_lll_norms	7138201
nbits2prec64	7494235
cget_dblmat	8419042
addmuliu64_inplace	9582880
submuliu64_inplace	9633716
pari_rint	10798743
rotateG_fast	11548668
update_alpha	11992575
cget_dpevec	13300076
dpe_divz	14079660
dpe_abscmp	14520122
setG2_fast	17031291
addzi	17783727
subzi	18525346
u64toi	19904067
affidpe	20757458
setG_fast	22662990
set_line	24934415
affdpe	25735986
Babai_fast	30207062
rotate	31940400
dblrotate	34645939
cget_dblvec	34998508
dpe_normalize	48117483
dpe_submulz	51709908
dpe_subz	53741083
dpe_mulz	56974324
dpe_normalize0	108583912
dbldotproduct	118241029
itodbl_exp	162606178

Generated by: LCOV version 1.16