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: 2026-09-03 17:02:47 Functions: 96.2 % 131 126 Legend: Lines:     hit not hit

Function Name	Hit count
Babai	0
RgM_flop	0
dbg_flatter	0
dbg_flattergram	0
fplll	0
kerint	28
matkerint0	28
lllgramkerim	35
lllkerim	35
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
kerint0	56
qflllgram	63
incrementalGSgen	168
lllallgen	168
lllgramallgen	168
lllint	183
REDgen	196
do_SWAPgen	196
qflllgram0	245
qflll0	301
pslg	504
ZM_flattergram	968
ZM_flattergram_rank	968
gramschmidt_upper	1402
dpeM_diagonal_shallow	1736
RgM_Cholesky_dynprec	2988
flattergram_i	2988
ZM_to_RM	4706
fplll_heuristic	4706
gc_lll	5460
lllgram	9093
ZC_to_RC	22443
truncexpo	24469
dpetor	26670
RgM_flip	34953
lllgramint	36441
lllall	36701
get_cholesky	44547
RgM_is_square_mat	45834
thsn	92870
setG2_heuristic	195115
realsqrdotproduct	207826
setG_heuristic	217970
Babai_heuristic	302144
dpe_negz	366753
absrsmall2	442325
rotateG	479947
ZM_is_knapsack	607592
ZM_flatter_rank	625255
fplll_flatter	626223
ZM_flatter	627269
dperotate	718524
addmuliu642n	729530
u64toineg	729530
submuliu642n	747684
absrsmall	761889
lll_trivial	771853
mulshift	938305
thre	1033839
get_gramschmidt	1099660
ZM_is_lower	1205625
lll	1244995
realdotproduct	1289785
dpe_addmuluz	1345057
drop	1347868
flat	1347868
potential	1347868
sizered	1347868
dpe_submuluz	1433659
fplll_dpe	1605272
submulshift	2074362
vectail_inplace	2093557
fplll_fast	2107536
lll_finish	2168176
affii_or_copy_gc	2183624
dpe_abssmall	2183624
dbldotsquare	2485030
gramschmidt_dynprec	2695736
affdbldpe	3210544
cget_dpemat	3210544
mpabscmp	4109514
ZM_is_upper	4239730
addmuliu2n	4668294
GS_extraprec	4729302
condition_bound	4729302
submuliu2n	4743367
Babai_dpe	4767832
ZM2_lll_norms	4851414
lllfp	5375858
dpe_cmp	5479922
dpe_cmpmul	5479922
spread	5856011
dpe_addz	6685227
ZM_lll_norms	7144340
nbits2prec64	7496730
cget_dblmat	8430144
dpe_muluz	8704419
addmuliu64_inplace	10613593
submuliu64_inplace	10666126
addmulziu	10826608
pari_rint	11657413
rotateG_fast	11961896
submulziu	12229399
update_alpha	12441843
cget_dpevec	13317840
dpe_divz	15649737
dpe_abscmp	15813412
submulzu2n	16867897
addmulzu2n	17070592
setG2_fast	17616859
u64toi	22027403
affidpe	22440858
setG_fast	23271432
set_line	25551276
Babai_fast	31684648
addzi	32506340
affdpe	33168846
rotate	33261852
subzi	33271522
cget_dblvec	35111896
dblrotate	35885688
dpe_submulz	69698534
dpe_mulz	75178456
dpe_subz	76424339
dpe_normalize	77497929
dbldotproduct	129236455
dpe_normalize0	153389691
itodbl_exp	177113390

Generated by: LCOV version 2.0-1