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 30604-e5d817ee12) Lines: 1336 1642 81.4 % Date: 2026-01-10 09:22:24 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	20146
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93800
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244396
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	317718
dpe_addmuluz	342913
absrsmall2	402705
dpe_submuluz	412412
rotateG	443655
ZM_is_knapsack	606475
ZM_flatter_rank	624834
fplll_flatter	625795
ZM_flatter	626848
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	698128
lll_trivial	771699
dpe_muluz	799875
get_gramschmidt	1098838
realdotproduct	1186355
ZM_is_lower	1205111
lll	1243326
flat	1347152
sizered	1347152
drop	1347153
potential	1347153
affii_or_copy_gc	1390423
dpe_abssmall	1390429
submulshift	1501331
fplll_dpe	1603478
dpe_addz	1943125
vectail_inplace	2090475
fplll_fast	2104004
lll_finish	2164600
dbldotsquare	2481219
gramschmidt_dynprec	2694303
cget_dpemat	3206929
affdbldpe	3206964
addmuliu2n	4087820
mpabscmp	4096978
submuliu2n	4178846
ZM_is_upper	4236562
addmulziu	4580780
Babai_dpe	4655154
GS_extraprec	4727862
condition_bound	4727862
ZM2_lll_norms	4848708
gsisinv	5195616
dpe_cmpmul	5263473
dpe_cmp	5263480
lllfp	5371505
spread	5852988
submulziu	5923352
ZM_lll_norms	7137948
nbits2prec64	7492956
cget_dblmat	8416000
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10769319
rotateG_fast	11516393
update_alpha	11960151
cget_dpevec	13296211
dpe_divz	14076739
dpe_abscmp	14517140
setG2_fast	16985894
addzi	17783547
subzi	18525172
u64toi	19880176
affidpe	20752794
setG_fast	22614843
set_line	24885606
affdpe	25731757
Babai_fast	30144640
rotate	31875551
dblrotate	34549100
cget_dblvec	34986923
dpe_normalize	48112386
dpe_submulz	51704508
dpe_subz	53735646
dpe_mulz	56967870
dpe_normalize0	108571035
dbldotproduct	118043637
itodbl_exp	162368175

Generated by: LCOV version 1.16