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 30622-caa25a75db) Lines: 1336 1642 81.4 % Date: 2026-01-22 09:18:00 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	1297
RgM_Cholesky_dynprec	2967
flattergram_i	2967
ZM_to_RM	4203
fplll_heuristic	4203
gc_lll	4788
lllgram	9089
truncexpo	11689
ZC_to_RC	15667
dpeM_diagonal_shallow	18805
RgM_flip	33835
lllgramint	36439
lllall	36699
get_gaussred	43383
RgM_is_square_mat	45828
dpetor	88830
setG2_heuristic	184876
realsqrdotproduct	194500
setG_heuristic	202523
dpe_negz	237024
submulzu2n	254838
addmulzu2n	264432
Babai_heuristic	283357
mulshift	314810
dpe_addmuluz	339677
absrsmall2	392314
dpe_submuluz	407824
rotateG	439064
ZM_is_knapsack	579506
ZM_flatter_rank	617081
fplll_flatter	618042
ZM_flatter	619089
dperotate	647358
addmuliu642n	668454
u64toineg	668454
absrsmall	676576
submuliu642n	684645
lll_trivial	748279
dpe_muluz	791934
get_gramschmidt	1067376
realdotproduct	1150317
ZM_is_lower	1175530
lll	1226643
drop	1331872
flat	1331872
potential	1331872
sizered	1331872
affii_or_copy_gc	1374958
dpe_abssmall	1374967
submulshift	1494143
fplll_dpe	1538105
dpe_addz	1928809
vectail_inplace	2005726
fplll_fast	2014676
lll_finish	2073417
dbldotsquare	2356742
gramschmidt_dynprec	2663743
affdbldpe	3076207
cget_dpemat	3076212
addmuliu2n	3842727
submuliu2n	3932869
mpabscmp	4027920
ZM_is_upper	4142524
Babai_dpe	4523538
addmulziu	4554474
GS_extraprec	4691627
condition_bound	4691627
ZM2_lll_norms	4809620
dpe_cmpmul	5133951
dpe_cmp	5133954
gsisinv	5135697
lllfp	5302548
spread	5764900
submulziu	5880229
ZM_lll_norms	6995705
nbits2prec64	7394547
cget_dblmat	8058703
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10455453
rotateG_fast	11118273
update_alpha	11557341
cget_dpevec	12779882
dpe_divz	13754379
dpe_abscmp	14194216
setG2_fast	16403116
addzi	17675633
subzi	18409608
u64toi	19880176
affidpe	20198511
setG_fast	21816940
set_line	23981871
affdpe	25242428
Babai_fast	29119335
rotate	30892061
dblrotate	33354826
cget_dblvec	33560113
dpe_normalize	47272703
dpe_submulz	50861593
dpe_subz	52877156
dpe_mulz	55995514
dpe_normalize0	106608023
dbldotproduct	114485072
itodbl_exp	157239065

Generated by: LCOV version 1.16