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 30835-e55edf4b45) Lines: 1336 1642 81.4 % Date: 2026-04-26 09:26:37 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
kerint	28
matkerint0	28
lllgramkerim	35
lllkerim	35
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
kerint0	56
qflllgram	63
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
dpeM_diagonal_shallow	1547
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
dpetor	23604
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244393
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342906
absrsmall2	401466
dpe_submuluz	412418
rotateG	443224
ZM_is_knapsack	606465
ZM_flatter_rank	624838
fplll_flatter	625799
ZM_flatter	626852
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771771
dpe_muluz	799875
get_gramschmidt	1099274
realdotproduct	1183370
ZM_is_lower	1205487
lll	1243426
drop	1347011
potential	1347012
flat	1347013
sizered	1347013
affii_or_copy_gc	1390425
dpe_abssmall	1390432
submulshift	1499787
fplll_dpe	1603897
dpe_addz	1943120
vectail_inplace	2090960
fplll_fast	2104515
lll_finish	2165122
dbldotsquare	2482175
gramschmidt_dynprec	2694020
affdbldpe	3207788
cget_dpemat	3207793
addmuliu2n	4087302
mpabscmp	4096518
submuliu2n	4173590
ZM_is_upper	4236692
addmulziu	4580735
Babai_dpe	4656257
GS_extraprec	4727229
condition_bound	4727229
ZM2_lll_norms	4848166
gsisinv	5195409
dpe_cmpmul	5264559
dpe_cmp	5264562
lllfp	5371232
spread	5852767
submulziu	5923373
ZM_lll_norms	7137868
nbits2prec64	7492451
cget_dblmat	8418052
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10767958
rotateG_fast	11516470
update_alpha	11959844
cget_dpevec	13300652
dpe_divz	14078562
dpe_abscmp	14518974
setG2_fast	16985607
addzi	17783358
subzi	18525001
u64toi	19876486
affidpe	20756569
setG_fast	22616039
set_line	24887363
affdpe	25733329
Babai_fast	30144632
rotate	31873904
dblrotate	34549440
cget_dblvec	34996378
dpe_normalize	48113338
dpe_submulz	51704389
dpe_subz	53735522
dpe_mulz	56968825
dpe_normalize0	108575088
dbldotproduct	118030033
itodbl_exp	162318726

Generated by: LCOV version 1.16