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
Babai_dpe	4655154
Babai_fast	30144640
Babai_heuristic	289747
GS_extraprec	4727862
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4848708
ZM_flatter	626848
ZM_flatter_rank	624834
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606475
ZM_is_lower	1205111
ZM_is_upper	4236562
ZM_lll_norms	7137948
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4087820
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580780
addmulzu2n	271563
addzi	17783547
affdbldpe	3206964
affdpe	25731757
affidpe	20752794
affii_or_copy_gc	1390423
cget_dblmat	8416000
cget_dblvec	34986923
cget_dpemat	3206929
cget_dpevec	13296211
condition_bound	4727862
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118043637
dbldotsquare	2481219
dblrotate	34549100
do_SWAPgen	196
dpeM_diagonal_shallow	20146
dpe_abscmp	14517140
dpe_abssmall	1390429
dpe_addmuluz	342913
dpe_addz	1943125
dpe_cmp	5263480
dpe_cmpmul	5263473
dpe_divz	14076739
dpe_muluz	799875
dpe_mulz	56967870
dpe_negz	244396
dpe_normalize	48112386
dpe_normalize0	108571035
dpe_submuluz	412412
dpe_submulz	51704508
dpe_subz	53735646
dperotate	652350
dpetor	93800
drop	1347153
flat	1347152
flattergram_i	2967
fplll	0
fplll_dpe	1603478
fplll_fast	2104004
fplll_flatter	625795
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44539
get_gramschmidt	1098838
gramschmidt_dynprec	2694303
gramschmidt_upper	1336
gsisinv	5195616
incrementalGSgen	168
itodbl_exp	162368175
kerint	42
kerint0	70
lll	1243326
lll_finish	2164600
lll_trivial	771699
lllall	36699
lllallgen	168
lllfp	5371505
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096978
mulshift	317718
nbits2prec64	7492956
pari_rint	10769319
potential	1347153
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31875551
rotateG	443655
rotateG_fast	11516393
setG2_fast	16985894
setG2_heuristic	188352
setG_fast	22614843
setG_heuristic	206374
set_line	24885606
sizered	1347152
spread	5852988
submuliu2n	4178846
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501331
submulziu	5923352
submulzu2n	262549
subzi	18525172
truncexpo	12139
u64toi	19880176
u64toineg	668454
update_alpha	11960151
vectail_inplace	2090475

Generated by: LCOV version 1.16