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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 81.2 % 1645 1336 Test Date: 2026-09-22 17:05:26 Functions: 96.2 % 131 126 Legend: Lines:     hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4767801
Babai_fast	31678933
Babai_heuristic	302144
GS_extraprec	4729356
REDgen	196
RgM_Cholesky_dynprec	2988
RgM_flip	34953
RgM_flop	0
RgM_is_square_mat	45834
ZC_to_RC	22443
ZM2_lll_norms	4851586
ZM_flatter	627274
ZM_flatter_rank	625260
ZM_flattergram	968
ZM_flattergram_rank	968
ZM_is_knapsack	607531
ZM_is_lower	1205629
ZM_is_upper	4239761
ZM_lll_norms	7144456
ZM_to_RM	4706
absrsmall	761889
absrsmall2	442325
addmuliu2n	4666438
addmuliu642n	729530
addmuliu64_inplace	10613593
addmulziu	10826608
addmulzu2n	17070592
addzi	32506340
affdbldpe	3210554
affdpe	33168552
affidpe	22440540
affii_or_copy_gc	2183624
cget_dblmat	8429920
cget_dblvec	35109892
cget_dpemat	3210554
cget_dpevec	13318027
condition_bound	4729356
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	129211501
dbldotsquare	2485091
dblrotate	35879250
do_SWAPgen	196
dpeM_diagonal_shallow	1736
dpe_abscmp	15813003
dpe_abssmall	2183624
dpe_addmuluz	1345057
dpe_addz	6685227
dpe_cmp	5479891
dpe_cmpmul	5479891
dpe_divz	15649328
dpe_muluz	8704419
dpe_mulz	75175860
dpe_negz	366760
dpe_normalize	77495252
dpe_normalize0	153383820
dpe_submuluz	1433659
dpe_submulz	69695969
dpe_subz	76421774
dperotate	718524
dpetor	26670
drop	1347881
flat	1347881
flattergram_i	2988
fplll	0
fplll_dpe	1605277
fplll_fast	2107480
fplll_flatter	626228
fplll_heuristic	4706
gc_lll	5460
get_cholesky	44547
get_gramschmidt	1099664
gramschmidt_dynprec	2695762
gramschmidt_upper	1402
incrementalGSgen	168
itodbl_exp	177077752
kerint	28
kerint0	56
lll	1244995
lll_finish	2168120
lll_trivial	771852
lllall	36701
lllallgen	168
lllfp	5375897
lllgen	42
lllgram	9093
lllgramallgen	168
lllgramgen	42
lllgramint	36441
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4109260
mulshift	938305
nbits2prec64	7496838
pari_rint	11656408
potential	1347881
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1289785
realsqrdotproduct	207826
rotate	33255415
rotateG	479947
rotateG_fast	11959750
setG2_fast	17613273
setG2_heuristic	195115
setG_fast	23267361
setG_heuristic	217970
set_line	25547170
sizered	1347881
spread	5856003
submuliu2n	4742023
submuliu642n	747684
submuliu64_inplace	10666126
submulshift	2074362
submulziu	12229399
submulzu2n	16867897
subzi	33271522
thre	1033777
thsn	92870
truncexpo	24469
u64toi	22027403
u64toineg	729530
update_alpha	12439697
vectail_inplace	2093501

Generated by: LCOV version 2.0-1