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: 2026-03-01 09:23:56 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	20147
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244379
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342911
absrsmall2	401466
dpe_submuluz	412412
rotateG	443224
ZM_is_knapsack	606319
ZM_flatter_rank	624818
fplll_flatter	625779
ZM_flatter	626832
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771700
dpe_muluz	799874
get_gramschmidt	1098820
realdotproduct	1183370
ZM_is_lower	1205096
lll	1243327
flat	1347052
drop	1347055
potential	1347055
sizered	1347055
affii_or_copy_gc	1390410
dpe_abssmall	1390423
submulshift	1501323
fplll_dpe	1603462
dpe_addz	1943125
vectail_inplace	2090323
fplll_fast	2103839
lll_finish	2164453
dbldotsquare	2481249
gramschmidt_dynprec	2694108
affdbldpe	3206921
cget_dpemat	3206931
addmuliu2n	4086167
mpabscmp	4096265
submuliu2n	4177606
ZM_is_upper	4236356
addmulziu	4580826
Babai_dpe	4655036
GS_extraprec	4727542
condition_bound	4727542
ZM2_lll_norms	4848647
gsisinv	5195291
dpe_cmpmul	5263358
dpe_cmp	5263364
lllfp	5371218
spread	5852510
submulziu	5923296
ZM_lll_norms	7137741
nbits2prec64	7492426
cget_dblmat	8415340
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10768208
rotateG_fast	11513879
update_alpha	11957231
cget_dpevec	13296411
dpe_divz	14076026
dpe_abscmp	14516457
setG2_fast	16982044
addzi	17783241
subzi	18524490
u64toi	19880176
affidpe	20752198
setG_fast	22610364
set_line	24881359
affdpe	25730941
Babai_fast	30138230
rotate	31865960
dblrotate	34541642
cget_dblvec	34983240
dpe_normalize	48108649
dpe_submulz	51700682
dpe_subz	53731758
dpe_mulz	56963893
dpe_normalize0	108562617
dbldotproduct	118018967
itodbl_exp	162346702

Generated by: LCOV version 1.16