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 30580-ef5a862e7f) Lines: 1336 1642 81.4 % Date: 2025-12-19 09:23:05 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	20280
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44580
RgM_is_square_mat	45828
dpetor	94229
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244426
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318482
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412457
rotateG	443307
ZM_is_knapsack	606563
ZM_flatter_rank	624932
fplll_flatter	625893
ZM_flatter	626946
dperotate	652516
addmuliu642n	670410
u64toineg	670410
submuliu642n	686221
absrsmall	696466
lll_trivial	771723
dpe_muluz	799917
get_gramschmidt	1098964
realdotproduct	1183370
ZM_is_lower	1205128
lll	1243356
sizered	1347335
drop	1347336
flat	1347336
potential	1347336
affii_or_copy_gc	1390683
dpe_abssmall	1390713
submulshift	1504855
fplll_dpe	1603798
dpe_addz	1943208
vectail_inplace	2090890
fplll_fast	2104388
lll_finish	2165131
dbldotsquare	2481680
gramschmidt_dynprec	2694670
cget_dpemat	3207583
affdbldpe	3207592
mpabscmp	4097201
addmuliu2n	4100371
submuliu2n	4191456
ZM_is_upper	4237121
addmulziu	4580771
Babai_dpe	4656121
condition_bound	4728254
GS_extraprec	4728255
ZM2_lll_norms	4848070
gsisinv	5196027
dpe_cmpmul	5264312
dpe_cmp	5264318
lllfp	5372196
spread	5853536
submulziu	5923737
ZM_lll_norms	7137845
nbits2prec64	7493820
cget_dblmat	8417528
addmuliu64_inplace	9578590
submuliu64_inplace	9629660
pari_rint	10785952
rotateG_fast	11534357
update_alpha	11977733
cget_dpevec	13298965
dpe_divz	14078860
dpe_abscmp	14519373
setG2_fast	17009833
addzi	17783880
subzi	18525390
u64toi	19894471
affidpe	20756246
setG_fast	22639841
set_line	24911315
affdpe	25735545
Babai_fast	30177496
rotate	31906596
dblrotate	34603007
cget_dblvec	34990951
dpe_normalize	48113541
dpe_submulz	51706405
dpe_subz	53737613
dpe_mulz	56970555
dpe_normalize0	108574564
dbldotproduct	118142230
itodbl_exp	162522493

Generated by: LCOV version 1.16