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 30842-de08e65e1b) Lines: 1336 1642 81.4 % Date: 2026-04-29 09:26:11 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	244376
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342905
absrsmall2	401466
dpe_submuluz	412415
rotateG	443224
ZM_is_knapsack	606417
ZM_flatter_rank	624829
fplll_flatter	625790
ZM_flatter	626843
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771771
dpe_muluz	799871
get_gramschmidt	1099249
realdotproduct	1183370
ZM_is_lower	1205467
lll	1243424
drop	1346928
potential	1346929
flat	1346931
sizered	1346931
affii_or_copy_gc	1390390
dpe_abssmall	1390411
submulshift	1499787
fplll_dpe	1604025
dpe_addz	1943118
vectail_inplace	2091034
fplll_fast	2104590
lll_finish	2165205
dbldotsquare	2482349
gramschmidt_dynprec	2693860
affdbldpe	3208046
cget_dpemat	3208048
addmuliu2n	4087958
mpabscmp	4096214
submuliu2n	4174243
ZM_is_upper	4236658
addmulziu	4580702
Babai_dpe	4656348
GS_extraprec	4726965
condition_bound	4726965
ZM2_lll_norms	4847997
gsisinv	5195147
dpe_cmpmul	5264622
dpe_cmp	5264637
lllfp	5370995
spread	5852457
submulziu	5923299
ZM_lll_norms	7137803
nbits2prec64	7492070
cget_dblmat	8418339
addmuliu64_inplace	9567338
submuliu64_inplace	9625841
pari_rint	10768860
rotateG_fast	11517081
update_alpha	11960380
cget_dpevec	13301354
dpe_divz	14078538
dpe_abscmp	14518988
setG2_fast	16986377
addzi	17782918
subzi	18524551
u64toi	19876624
affidpe	20756883
setG_fast	22616878
set_line	24888186
affdpe	25733090
Babai_fast	30145213
rotate	31875152
dblrotate	34551206
cget_dblvec	34997064
dpe_normalize	48113370
dpe_submulz	51703974
dpe_subz	53735100
dpe_mulz	56968395
dpe_normalize0	108574837
dbldotproduct	118034256
itodbl_exp	162340494

Generated by: LCOV version 1.16