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 v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 81.3 % 1643 1335 Test Date: 2026-07-23 17:04:59 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	1694
RgM_Cholesky_dynprec	2988
flattergram_i	2988
ZM_to_RM	4692
fplll_heuristic	4692
gc_lll	5446
lllgram	9089
ZC_to_RC	22240
truncexpo	24411
dpetor	25844
RgM_flip	34939
lllgramint	36439
lllall	36699
get_cholesky	44546
RgM_is_square_mat	45828
thsn	92851
setG2_heuristic	194933
realsqrdotproduct	207602
setG_heuristic	217683
Babai_heuristic	301906
dpe_negz	366301
absrsmall2	441842
rotateG	478734
ZM_is_knapsack	607647
ZM_flatter_rank	625255
fplll_flatter	626223
ZM_flatter	627269
dperotate	716308
addmuliu642n	726330
u64toineg	726330
submuliu642n	744684
absrsmall	761350
lll_trivial	771847
mulshift	933199
thre	1033915
get_gramschmidt	1099663
ZM_is_lower	1205580
lll	1244994
realdotproduct	1288707
dpe_addmuluz	1323853
drop	1347830
flat	1347830
potential	1347830
sizered	1347830
dpe_submuluz	1410109
fplll_dpe	1605219
submulshift	2066712
vectail_inplace	2093562
fplll_fast	2107542
affii_or_copy_gc	2162095
dpe_abssmall	2162095
lll_finish	2168181
dbldotsquare	2485309
gramschmidt_dynprec	2695660
affdbldpe	3210438
cget_dpemat	3210438
mpabscmp	4109269
ZM_is_upper	4239602
addmuliu2n	4642157
submuliu2n	4718260
GS_extraprec	4729266
condition_bound	4729266
Babai_dpe	4762323
ZM2_lll_norms	4851314
lllfp	5375739
dpe_cmp	5469801
dpe_cmpmul	5469801
spread	5856032
dpe_addz	6613235
ZM_lll_norms	7144245
nbits2prec64	7496565
cget_dblmat	8430168
dpe_muluz	8621596
addmuliu64_inplace	10599145
submuliu64_inplace	10652343
addmulziu	10701531
pari_rint	11638556
rotateG_fast	11957876
submulziu	12094839
update_alpha	12436610
cget_dpevec	13316637
dpe_divz	15577747
dpe_abscmp	15746499
submulzu2n	16768355
addmulzu2n	16967395
setG2_fast	17608495
u64toi	21996172
affidpe	22363572
setG_fast	23262321
set_line	25542035
Babai_fast	31670503
addzi	32045830
subzi	32809395
affdpe	33062959
rotate	33251056
cget_dblvec	35109252
dblrotate	35873628
dpe_submulz	69115457
dpe_mulz	74585258
dpe_subz	75767142
dpe_normalize	76719052
dbldotproduct	129123782
dpe_normalize0	151968279
itodbl_exp	176918914

Generated by: LCOV version 2.0-1