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 30773-2078653b96) Lines: 1336 1642 81.4 % Date: 2026-04-03 09:26:58 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656280
Babai_fast	30145476
Babai_heuristic	289747
GS_extraprec	4727065
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4847961
ZM_flatter	626850
ZM_flatter_rank	624836
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606523
ZM_is_lower	1205476
ZM_is_upper	4236578
ZM_lll_norms	7137748
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4085392
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580659
addmulzu2n	271563
addzi	17782539
affdbldpe	3207776
affdpe	25733345
affidpe	20756752
affii_or_copy_gc	1390403
cget_dblmat	8418272
cget_dblvec	34998677
cget_dpemat	3207767
cget_dpevec	13300721
condition_bound	4727065
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118034073
dbldotsquare	2482285
dblrotate	34550710
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519138
dpe_abssmall	1390407
dpe_addmuluz	342903
dpe_addz	1943119
dpe_cmp	5264571
dpe_cmpmul	5264568
dpe_divz	14078683
dpe_muluz	799869
dpe_mulz	56969151
dpe_negz	244393
dpe_normalize	48113744
dpe_normalize0	108575914
dpe_submuluz	412417
dpe_submulz	51704749
dpe_subz	53735799
dperotate	652350
dpetor	93774
drop	1346955
flat	1346951
flattergram_i	2967
fplll	0
fplll_dpe	1603890
fplll_fast	2104573
fplll_flatter	625797
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44539
get_gramschmidt	1099261
gramschmidt_dynprec	2693905
gramschmidt_upper	1336
gsisinv	5195241
incrementalGSgen	168
itodbl_exp	162342837
kerint	28
kerint0	56
lll	1243425
lll_finish	2165180
lll_trivial	771768
lllall	36699
lllallgen	168
lllfp	5371060
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096585
mulshift	317611
nbits2prec64	7492185
pari_rint	10768274
potential	1346955
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31877314
rotateG	443655
rotateG_fast	11516913
setG2_fast	16986217
setG2_heuristic	188352
setG_fast	22617070
setG_heuristic	206374
set_line	24888504
sizered	1346955
spread	5852662
submuliu2n	4170547
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499795
submulziu	5923234
submulzu2n	262549
subzi	18524121
truncexpo	12139
u64toi	19876486
u64toineg	668118
update_alpha	11960663
vectail_inplace	2091022

Generated by: LCOV version 1.16