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 30735-65f72320ad) Lines: 1336 1642 81.4 % Date: 2026-03-15 09:23:45 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	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44537
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244381
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342906
absrsmall2	401466
dpe_submuluz	412418
rotateG	443224
ZM_is_knapsack	606570
ZM_flatter_rank	624832
fplll_flatter	625793
ZM_flatter	626846
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771771
dpe_muluz	799875
get_gramschmidt	1099274
realdotproduct	1183370
ZM_is_lower	1205498
lll	1243426
flat	1346943
drop	1346944
potential	1346944
sizered	1346944
affii_or_copy_gc	1390425
dpe_abssmall	1390435
submulshift	1499787
fplll_dpe	1603912
dpe_addz	1943122
vectail_inplace	2091061
fplll_fast	2104637
lll_finish	2165239
dbldotsquare	2482459
gramschmidt_dynprec	2693885
affdbldpe	3207820
cget_dpemat	3207823
addmuliu2n	4085385
mpabscmp	4096603
submuliu2n	4170574
ZM_is_upper	4236576
addmulziu	4580776
Babai_dpe	4656289
GS_extraprec	4727062
condition_bound	4727062
ZM2_lll_norms	4847898
gsisinv	5195251
dpe_cmpmul	5264582
dpe_cmp	5264598
lllfp	5371033
spread	5852718
submulziu	5923432
ZM_lll_norms	7137797
nbits2prec64	7492146
cget_dblmat	8418543
addmuliu64_inplace	9567325
submuliu64_inplace	9625851
pari_rint	10769523
rotateG_fast	11517818
update_alpha	11961146
cget_dpevec	13301100
dpe_divz	14078778
dpe_abscmp	14519197
setG2_fast	16987597
addzi	17783576
subzi	18525234
u64toi	19876621
affidpe	20757075
setG_fast	22618817
set_line	24890854
affdpe	25733786
Babai_fast	30148079
rotate	31877893
dblrotate	34553423
cget_dblvec	35000067
dpe_normalize	48114339
dpe_submulz	51705554
dpe_subz	53736708
dpe_mulz	56970050
dpe_normalize0	108577536
dbldotproduct	118041925
itodbl_exp	162356211

Generated by: LCOV version 1.16