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) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30569-8181146aa1) Lines: 1335 1641 81.4 % Date: 2025-12-02 09:22:09 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
RgM_flop	0
dbg_flatter	0
dbg_flattergram	0
fplll	0
matkerint0	28
lllgramkerim	35
lllkerim	35
kerint	42
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
qflllgram	63
kerint0	70
incrementalGSgen	168
lllallgen	168
lllgramallgen	168
lllint	183
REDgen	196
do_SWAPgen	196
qflllgram0	245
qflll0	301
pslg	504
ZM_flattergram	961
ZM_flattergram_rank	961
gramschmidt_upper	1336
RgM_Cholesky_dynprec	2967
flattergram_i	2967
ZM_to_RM	4246
fplll_heuristic	4246
gc_lll	4835
lllgram	9089
truncexpo	12139
ZC_to_RC	15952
dpeM_diagonal_shallow	20293
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44560
RgM_is_square_mat	45828
dpetor	94283
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244417
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	318943
dpe_addmuluz	342912
absrsmall2	402705
dpe_submuluz	412453
rotateG	443711
ZM_is_knapsack	606770
ZM_flatter_rank	624933
fplll_flatter	625894
ZM_flatter	626947
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	698128
lll_trivial	771752
dpe_muluz	799914
get_gramschmidt	1099035
realdotproduct	1186355
ZM_is_lower	1205204
lll	1243390
drop	1347356
flat	1347359
potential	1347359
sizered	1347360
affii_or_copy_gc	1390580
dpe_abssmall	1390606
submulshift	1507251
fplll_dpe	1603865
dpe_addz	1943190
vectail_inplace	2091143
fplll_fast	2104702
lll_finish	2165399
dbldotsquare	2482019
gramschmidt_dynprec	2694716
affdbldpe	3207727
cget_dpemat	3207729
mpabscmp	4097831
addmuliu2n	4104398
submuliu2n	4197454
ZM_is_upper	4237266
addmulziu	4580843
Babai_dpe	4656311
GS_extraprec	4728303
condition_bound	4728304
ZM2_lll_norms	4848029
gsisinv	5196144
dpe_cmpmul	5264480
dpe_cmp	5264483
lllfp	5372322
spread	5853847
submulziu	5923667
ZM_lll_norms	7138063
nbits2prec64	7493950
cget_dblmat	8418773
addmuliu64_inplace	9582880
submuliu64_inplace	9633716
pari_rint	10798749
rotateG_fast	11548942
update_alpha	11992847
cget_dpevec	13299798
dpe_divz	14079575
dpe_abscmp	14520063
setG2_fast	17031743
addzi	17783962
subzi	18525253
u64toi	19904067
affidpe	20757266
setG_fast	22663568
set_line	24934943
affdpe	25735816
Babai_fast	30207873
rotate	31941209
dblrotate	34646742
cget_dblvec	34998369
dpe_normalize	48117758
dpe_submulz	51710165
dpe_subz	53741330
dpe_mulz	56974501
dpe_normalize0	108584407
dbldotproduct	118244355
itodbl_exp	162611519

Generated by: LCOV version 1.16