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
Babai_dpe	4762323
Babai_fast	31670503
Babai_heuristic	301906
GS_extraprec	4729266
REDgen	196
RgM_Cholesky_dynprec	2988
RgM_flip	34939
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	22240
ZM2_lll_norms	4851314
ZM_flatter	627269
ZM_flatter_rank	625255
ZM_flattergram	968
ZM_flattergram_rank	968
ZM_is_knapsack	607647
ZM_is_lower	1205580
ZM_is_upper	4239602
ZM_lll_norms	7144245
ZM_to_RM	4692
absrsmall	761350
absrsmall2	441842
addmuliu2n	4642157
addmuliu642n	726330
addmuliu64_inplace	10599145
addmulziu	10701531
addmulzu2n	16967395
addzi	32045830
affdbldpe	3210438
affdpe	33062959
affidpe	22363572
affii_or_copy_gc	2162095
cget_dblmat	8430168
cget_dblvec	35109252
cget_dpemat	3210438
cget_dpevec	13316637
condition_bound	4729266
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	129123782
dbldotsquare	2485309
dblrotate	35873628
do_SWAPgen	196
dpeM_diagonal_shallow	1694
dpe_abscmp	15746499
dpe_abssmall	2162095
dpe_addmuluz	1323853
dpe_addz	6613235
dpe_cmp	5469801
dpe_cmpmul	5469801
dpe_divz	15577747
dpe_muluz	8621596
dpe_mulz	74585258
dpe_negz	366301
dpe_normalize	76719052
dpe_normalize0	151968279
dpe_submuluz	1410109
dpe_submulz	69115457
dpe_subz	75767142
dperotate	716308
dpetor	25844
drop	1347830
flat	1347830
flattergram_i	2988
fplll	0
fplll_dpe	1605219
fplll_fast	2107542
fplll_flatter	626223
fplll_heuristic	4692
gc_lll	5446
get_cholesky	44546
get_gramschmidt	1099663
gramschmidt_dynprec	2695660
gramschmidt_upper	1402
incrementalGSgen	168
itodbl_exp	176918914
kerint	28
kerint0	56
lll	1244994
lll_finish	2168181
lll_trivial	771847
lllall	36699
lllallgen	168
lllfp	5375739
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4109269
mulshift	933199
nbits2prec64	7496565
pari_rint	11638556
potential	1347830
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1288707
realsqrdotproduct	207602
rotate	33251056
rotateG	478734
rotateG_fast	11957876
setG2_fast	17608495
setG2_heuristic	194933
setG_fast	23262321
setG_heuristic	217683
set_line	25542035
sizered	1347830
spread	5856032
submuliu2n	4718260
submuliu642n	744684
submuliu64_inplace	10652343
submulshift	2066712
submulziu	12094839
submulzu2n	16768355
subzi	32809395
thre	1033915
thsn	92851
truncexpo	24411
u64toi	21996172
u64toineg	726330
update_alpha	12436610
vectail_inplace	2093562

Generated by: LCOV version 2.0-1