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: 2026-03-13 09:24:04 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	4246
fplll_heuristic	4246
gc_lll	4835
lllgram	9089
truncexpo	12139
ZC_to_RC	15952
dpeM_diagonal_shallow	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244389
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	317611
dpe_addmuluz	342907
absrsmall2	402705
dpe_submuluz	412418
rotateG	443655
ZM_is_knapsack	606606
ZM_flatter_rank	624849
fplll_flatter	625810
ZM_flatter	626863
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	698128
lll_trivial	771771
dpe_muluz	799876
get_gramschmidt	1099297
realdotproduct	1186355
ZM_is_lower	1205522
lll	1243425
drop	1347034
potential	1347034
sizered	1347034
flat	1347035
affii_or_copy_gc	1390414
dpe_abssmall	1390434
submulshift	1499795
fplll_dpe	1603927
dpe_addz	1943123
vectail_inplace	2091128
fplll_fast	2104672
lll_finish	2165305
dbldotsquare	2482485
gramschmidt_dynprec	2694068
affdbldpe	3207852
cget_dpemat	3207855
addmuliu2n	4088686
mpabscmp	4096785
submuliu2n	4175062
ZM_is_upper	4236776
addmulziu	4580770
Babai_dpe	4656390
GS_extraprec	4727315
condition_bound	4727315
ZM2_lll_norms	4848070
gsisinv	5195509
dpe_cmp	5264680
dpe_cmpmul	5264681
lllfp	5371306
spread	5853011
submulziu	5923426
ZM_lll_norms	7137946
nbits2prec64	7492629
cget_dblmat	8418711
addmuliu64_inplace	9567325
submuliu64_inplace	9625851
pari_rint	10769555
rotateG_fast	11517852
update_alpha	11961576
cget_dpevec	13301202
dpe_divz	14079004
dpe_abscmp	14519398
setG2_fast	16987638
addzi	17783615
subzi	18525209
u64toi	19876621
affidpe	20757392
setG_fast	22618834
set_line	24890969
affdpe	25733958
Babai_fast	30147649
rotate	31880096
dblrotate	34553536
cget_dblvec	35000089
dpe_normalize	48114542
dpe_submulz	51705708
dpe_subz	53736873
dpe_mulz	56970353
dpe_normalize0	108578235
dbldotproduct	118041836
itodbl_exp	162368593

Generated by: LCOV version 1.16