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

Generated by: LCOV version 2.0-1