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 30550-07450a7a86) Lines: 1335 1641 81.4 % Date: 2025-11-19 09:22:25 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	20287
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44560
RgM_is_square_mat	45828
dpetor	94271
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244449
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412454
rotateG	443280
ZM_is_knapsack	606565
ZM_flatter_rank	624486
fplll_flatter	625447
ZM_flatter	626500
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771735
dpe_muluz	799918
get_gramschmidt	1098385
realdotproduct	1183370
ZM_is_lower	1204567
lll	1243328
flat	1345966
drop	1345967
potential	1345967
sizered	1345967
affii_or_copy_gc	1390585
dpe_abssmall	1390607
submulshift	1507243
fplll_dpe	1603202
dpe_addz	1943189
vectail_inplace	2090269
fplll_fast	2103786
lll_finish	2164497
dbldotsquare	2481062
gramschmidt_dynprec	2691931
affdbldpe	3206400
cget_dpemat	3206404
mpabscmp	4093042
addmuliu2n	4104899
submuliu2n	4199408
ZM_is_upper	4233819
addmulziu	4580819
Babai_dpe	4654264
condition_bound	4724896
GS_extraprec	4724897
ZM2_lll_norms	4843656
gsisinv	5192547
dpe_cmpmul	5262493
dpe_cmp	5262504
lllfp	5368044
spread	5850032
submulziu	5923742
ZM_lll_norms	7132776
nbits2prec64	7486802
cget_dblmat	8415120
addmuliu64_inplace	9581970
submuliu64_inplace	9632820
pari_rint	10796035
rotateG_fast	11544907
update_alpha	11988327
cget_dpevec	13293662
dpe_divz	14075010
dpe_abscmp	14515506
setG2_fast	17025358
addzi	17783539
subzi	18525050
u64toi	19902261
affidpe	20749890
setG_fast	22653982
set_line	24924295
affdpe	25731211
Babai_fast	30197045
rotate	31927010
dblrotate	34634702
cget_dblvec	34979936
dpe_normalize	48106118
dpe_submulz	51699831
dpe_subz	53730979
dpe_mulz	56962161
dpe_normalize0	108555790
dbldotproduct	118203710
itodbl_exp	162572317

Generated by: LCOV version 1.16