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
Babai_dpe	4656390
Babai_fast	30147649
Babai_heuristic	289747
GS_extraprec	4727315
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4848070
ZM_flatter	626863
ZM_flatter_rank	624849
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606606
ZM_is_lower	1205522
ZM_is_upper	4236776
ZM_lll_norms	7137946
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4088686
addmuliu642n	668118
addmuliu64_inplace	9567325
addmulziu	4580770
addmulzu2n	271563
addzi	17783615
affdbldpe	3207852
affdpe	25733958
affidpe	20757392
affii_or_copy_gc	1390414
cget_dblmat	8418711
cget_dblvec	35000089
cget_dpemat	3207855
cget_dpevec	13301202
condition_bound	4727315
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118041836
dbldotsquare	2482485
dblrotate	34553536
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519398
dpe_abssmall	1390434
dpe_addmuluz	342907
dpe_addz	1943123
dpe_cmp	5264680
dpe_cmpmul	5264681
dpe_divz	14079004
dpe_muluz	799876
dpe_mulz	56970353
dpe_negz	244389
dpe_normalize	48114542
dpe_normalize0	108578235
dpe_submuluz	412418
dpe_submulz	51705708
dpe_subz	53736873
dperotate	652350
dpetor	93774
drop	1347034
flat	1347035
flattergram_i	2967
fplll	0
fplll_dpe	1603927
fplll_fast	2104672
fplll_flatter	625810
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44539
get_gramschmidt	1099297
gramschmidt_dynprec	2694068
gramschmidt_upper	1336
gsisinv	5195509
incrementalGSgen	168
itodbl_exp	162368593
kerint	42
kerint0	70
lll	1243425
lll_finish	2165305
lll_trivial	771771
lllall	36699
lllallgen	168
lllfp	5371306
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096785
mulshift	317611
nbits2prec64	7492629
pari_rint	10769555
potential	1347034
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31880096
rotateG	443655
rotateG_fast	11517852
setG2_fast	16987638
setG2_heuristic	188352
setG_fast	22618834
setG_heuristic	206374
set_line	24890969
sizered	1347034
spread	5853011
submuliu2n	4175062
submuliu642n	683445
submuliu64_inplace	9625851
submulshift	1499795
submulziu	5923426
submulzu2n	262549
subzi	18525209
truncexpo	12139
u64toi	19876621
u64toineg	668118
update_alpha	11961576
vectail_inplace	2091128

Generated by: LCOV version 1.16