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 30483-b6b1f87815) Lines: 1335 1641 81.4 % Date: 2025-09-12 09:24:16 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	20286
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44560
RgM_is_square_mat	45828
dpetor	94267
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244440
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412454
rotateG	443279
ZM_is_knapsack	606528
ZM_flatter_rank	624485
fplll_flatter	625446
ZM_flatter	626499
dperotate	652460
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771720
dpe_muluz	799918
get_gramschmidt	1098362
realdotproduct	1183370
ZM_is_lower	1204545
lll	1243315
flat	1345983
drop	1345984
sizered	1345984
potential	1345985
affii_or_copy_gc	1390591
dpe_abssmall	1390602
submulshift	1507243
fplll_dpe	1603175
dpe_addz	1943191
vectail_inplace	2090214
fplll_fast	2103722
lll_finish	2164435
dbldotsquare	2480748
gramschmidt_dynprec	2691966
cget_dpemat	3206344
affdbldpe	3206346
mpabscmp	4093510
addmuliu2n	4104268
submuliu2n	4197063
ZM_is_upper	4233821
addmulziu	4580878
Babai_dpe	4654253
GS_extraprec	4724919
condition_bound	4724919
ZM2_lll_norms	4841570
gsisinv	5192534
dpe_cmpmul	5262463
dpe_cmp	5262469
lllfp	5368088
spread	5849985
submulziu	5923750
ZM_lll_norms	7130579
nbits2prec64	7486829
cget_dblmat	8414879
addmuliu64_inplace	9581364
submuliu64_inplace	9632106
pari_rint	10795509
rotateG_fast	11546333
update_alpha	11989755
cget_dpevec	13292957
dpe_divz	14075381
dpe_abscmp	14515831
setG2_fast	17028149
addzi	17783754
subzi	18525271
u64toi	19900941
affidpe	20750082
setG_fast	22657078
set_line	24927298
affdpe	25731594
Babai_fast	30202383
rotate	31931353
dblrotate	34639029
cget_dblvec	34980721
dpe_normalize	48109152
dpe_submulz	51702942
dpe_subz	53734126
dpe_mulz	56965292
dpe_normalize0	108562516
dbldotproduct	118228402
itodbl_exp	162613657

Generated by: LCOV version 1.16