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: 2026-09-21 17:02:41 Functions: 96.2 % 131 126 Legend: Lines:     hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4767765
Babai_fast	31682025
Babai_heuristic	302144
GS_extraprec	4729033
REDgen	196
RgM_Cholesky_dynprec	2988
RgM_flip	34953
RgM_flop	0
RgM_is_square_mat	45834
ZC_to_RC	22443
ZM2_lll_norms	4851107
ZM_flatter	627255
ZM_flatter_rank	625241
ZM_flattergram	968
ZM_flattergram_rank	968
ZM_is_knapsack	607678
ZM_is_lower	1205606
ZM_is_upper	4239521
ZM_lll_norms	7144103
ZM_to_RM	4706
absrsmall	761889
absrsmall2	442325
addmuliu2n	4663838
addmuliu642n	729530
addmuliu64_inplace	10613593
addmulziu	10826608
addmulzu2n	17070592
addzi	32506340
affdbldpe	3210510
affdpe	33168563
affidpe	22440573
affii_or_copy_gc	2183624
cget_dblmat	8430424
cget_dblvec	35113056
cget_dpemat	3210510
cget_dpevec	13317897
condition_bound	4729033
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	129221024
dbldotsquare	2485221
dblrotate	35883033
do_SWAPgen	196
dpeM_diagonal_shallow	1736
dpe_abscmp	15813090
dpe_abssmall	2183624
dpe_addmuluz	1345057
dpe_addz	6685227
dpe_cmp	5479855
dpe_cmpmul	5479855
dpe_divz	15649415
dpe_muluz	8704419
dpe_mulz	75176635
dpe_negz	366751
dpe_normalize	77496104
dpe_normalize0	153385645
dpe_submuluz	1433659
dpe_submulz	69696780
dpe_subz	76422585
dperotate	718524
dpetor	26670
drop	1347772
flat	1347772
flattergram_i	2988
fplll	0
fplll_dpe	1605255
fplll_fast	2107606
fplll_flatter	626209
fplll_heuristic	4706
gc_lll	5460
get_cholesky	44547
get_gramschmidt	1099641
gramschmidt_dynprec	2695544
gramschmidt_upper	1402
incrementalGSgen	168
itodbl_exp	177088231
kerint	28
kerint0	56
lll	1244995
lll_finish	2168246
lll_trivial	771851
lllall	36701
lllallgen	168
lllfp	5375570
lllgen	42
lllgram	9093
lllgramallgen	168
lllgramgen	42
lllgramint	36441
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4109258
mulshift	938305
nbits2prec64	7496272
pari_rint	11657987
potential	1347772
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1289785
realsqrdotproduct	207826
rotate	33259194
rotateG	479947
rotateG_fast	11961011
setG2_fast	17615472
setG2_heuristic	195115
setG_fast	23270158
setG_heuristic	217970
set_line	25550093
sizered	1347772
spread	5855823
submuliu2n	4738151
submuliu642n	747684
submuliu64_inplace	10666126
submulshift	2074362
submulziu	12229399
submulzu2n	16867897
subzi	33271522
thre	1033919
thsn	92871
truncexpo	24469
u64toi	22027403
u64toineg	729530
update_alpha	12440958
vectail_inplace	2093627

Generated by: LCOV version 2.0-1