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 30719-2b7f142d49) Lines: 1336 1642 81.4 % Date: 2026-02-28 09:24:01 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	20146
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93800
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244369
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412412
rotateG	443224
ZM_is_knapsack	606261
ZM_flatter_rank	624789
fplll_flatter	625750
ZM_flatter	626803
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771702
dpe_muluz	799876
get_gramschmidt	1098792
realdotproduct	1183370
ZM_is_lower	1205066
lll	1243328
drop	1346919
potential	1346919
flat	1346921
sizered	1346921
affii_or_copy_gc	1390427
dpe_abssmall	1390429
submulshift	1501323
fplll_dpe	1603423
dpe_addz	1943127
vectail_inplace	2090235
fplll_fast	2103744
lll_finish	2164364
dbldotsquare	2480912
gramschmidt_dynprec	2693840
affdbldpe	3206856
cget_dpemat	3206864
addmuliu2n	4088361
mpabscmp	4095985
submuliu2n	4179325
ZM_is_upper	4236054
addmulziu	4580832
Babai_dpe	4654938
GS_extraprec	4727186
condition_bound	4727187
ZM2_lll_norms	4848251
gsisinv	5194944
dpe_cmpmul	5263302
dpe_cmp	5263307
lllfp	5370814
spread	5852098
submulziu	5923385
ZM_lll_norms	7137270
nbits2prec64	7491801
cget_dblmat	8414968
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10767665
rotateG_fast	11514885
update_alpha	11958212
cget_dpevec	13295658
dpe_divz	14076213
dpe_abscmp	14516621
setG2_fast	16983644
addzi	17783621
subzi	18525226
u64toi	19880176
affidpe	20752023
setG_fast	22611939
set_line	24882963
affdpe	25731150
Babai_fast	30141304
rotate	31868932
dblrotate	34544662
cget_dblvec	34981775
dpe_normalize	48110992
dpe_submulz	51703132
dpe_subz	53734260
dpe_mulz	56966350
dpe_normalize0	108567779
dbldotproduct	118035228
itodbl_exp	162374444

Generated by: LCOV version 1.16