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 30572-91e0396466) Lines: 1336 1642 81.4 % Date: 2025-12-14 09:22:17 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	4244
fplll_heuristic	4244
gc_lll	4833
lllgram	9089
truncexpo	12138
ZC_to_RC	15945
dpeM_diagonal_shallow	20294
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44560
RgM_is_square_mat	45828
dpetor	94285
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244431
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412454
rotateG	443280
ZM_is_knapsack	606734
ZM_flatter_rank	624964
fplll_flatter	625925
ZM_flatter	626978
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771750
dpe_muluz	799918
get_gramschmidt	1099080
realdotproduct	1183370
ZM_is_lower	1205251
lll	1243389
drop	1347490
potential	1347490
flat	1347491
sizered	1347491
affii_or_copy_gc	1390577
dpe_abssmall	1390595
submulshift	1507243
fplll_dpe	1603908
dpe_addz	1943183
vectail_inplace	2091165
fplll_fast	2104692
lll_finish	2165420
dbldotsquare	2482041
gramschmidt_dynprec	2694981
affdbldpe	3207810
cget_dpemat	3207815
mpabscmp	4098037
addmuliu2n	4107219
submuliu2n	4200809
ZM_is_upper	4237582
addmulziu	4580833
Babai_dpe	4656428
GS_extraprec	4728640
condition_bound	4728640
ZM2_lll_norms	4848437
gsisinv	5196499
dpe_cmpmul	5264613
dpe_cmp	5264616
lllfp	5372715
spread	5854156
submulziu	5923665
ZM_lll_norms	7138499
nbits2prec64	7494649
cget_dblmat	8418798
addmuliu64_inplace	9582880
submuliu64_inplace	9633716
pari_rint	10798979
rotateG_fast	11549009
update_alpha	11992401
cget_dpevec	13300156
dpe_divz	14079721
dpe_abscmp	14520202
setG2_fast	17031873
addzi	17783667
subzi	18525092
u64toi	19904067
affidpe	20757631
setG_fast	22663555
set_line	24935041
affdpe	25735966
Babai_fast	30208278
rotate	31939148
dblrotate	34646920
cget_dblvec	34997677
dpe_normalize	48117637
dpe_submulz	51710006
dpe_subz	53741122
dpe_mulz	56974475
dpe_normalize0	108584418
dbldotproduct	118248460
itodbl_exp	162642928

Generated by: LCOV version 1.16