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
Babai_dpe	4656289
Babai_fast	30148079
Babai_heuristic	288770
GS_extraprec	4727062
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847898
ZM_flatter	626846
ZM_flatter_rank	624832
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606570
ZM_is_lower	1205498
ZM_is_upper	4236576
ZM_lll_norms	7137797
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4085385
addmuliu642n	668118
addmuliu64_inplace	9567325
addmulziu	4580776
addmulzu2n	271563
addzi	17783576
affdbldpe	3207820
affdpe	25733786
affidpe	20757075
affii_or_copy_gc	1390425
cget_dblmat	8418543
cget_dblvec	35000067
cget_dpemat	3207823
cget_dpevec	13301100
condition_bound	4727062
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118041925
dbldotsquare	2482459
dblrotate	34553423
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519197
dpe_abssmall	1390435
dpe_addmuluz	342906
dpe_addz	1943122
dpe_cmp	5264598
dpe_cmpmul	5264582
dpe_divz	14078778
dpe_muluz	799875
dpe_mulz	56970050
dpe_negz	244381
dpe_normalize	48114339
dpe_normalize0	108577536
dpe_submuluz	412418
dpe_submulz	51705554
dpe_subz	53736708
dperotate	652350
dpetor	93774
drop	1346944
flat	1346943
flattergram_i	2967
fplll	0
fplll_dpe	1603912
fplll_fast	2104637
fplll_flatter	625793
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44537
get_gramschmidt	1099274
gramschmidt_dynprec	2693885
gramschmidt_upper	1336
gsisinv	5195251
incrementalGSgen	168
itodbl_exp	162356211
kerint	42
kerint0	70
lll	1243426
lll_finish	2165239
lll_trivial	771771
lllall	36699
lllallgen	168
lllfp	5371033
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096603
mulshift	317610
nbits2prec64	7492146
pari_rint	10769523
potential	1346944
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31877893
rotateG	443224
rotateG_fast	11517818
setG2_fast	16987597
setG2_heuristic	187610
setG_fast	22618817
setG_heuristic	205626
set_line	24890854
sizered	1346944
spread	5852718
submuliu2n	4170574
submuliu642n	683445
submuliu64_inplace	9625851
submulshift	1499787
submulziu	5923432
submulzu2n	262549
subzi	18525234
truncexpo	12138
u64toi	19876621
u64toineg	668118
update_alpha	11961146
vectail_inplace	2091061

Generated by: LCOV version 1.16