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 30640-c2c58e18c5) Lines: 1336 1642 81.4 % Date: 2026-01-27 08:51:18 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	954
ZM_flattergram_rank	954
gramschmidt_upper	1052
RgM_Cholesky_dynprec	2946
flattergram_i	2946
ZM_to_RM	4218
fplll_heuristic	4218
gc_lll	4482
lllgram	9089
truncexpo	11772
dpeM_diagonal_shallow	15092
ZC_to_RC	15826
RgM_flip	32276
lllgramint	36439
lllall	36699
get_gaussred	43333
RgM_is_square_mat	45828
dpetor	80033
setG2_heuristic	149068
realsqrdotproduct	158778
setG_heuristic	166817
dpe_negz	224592
Babai_heuristic	228112
submulzu2n	262549
addmulzu2n	271563
mulshift	305489
absrsmall2	326265
dpe_addmuluz	331617
dpe_submuluz	392641
rotateG	411830
ZM_is_knapsack	563572
absrsmall	567536
ZM_flatter_rank	611156
fplll_flatter	612110
ZM_flatter	613170
addmuliu642n	615148
u64toineg	615148
submuliu642n	632449
dperotate	632562
lll_trivial	682326
dpe_muluz	768809
realdotproduct	960143
get_gramschmidt	1044718
ZM_is_lower	1154484
lll	1199334
drop	1312996
potential	1312996
flat	1312997
sizered	1312997
affii_or_copy_gc	1336162
dpe_abssmall	1336166
fplll_dpe	1386373
submulshift	1391725
vectail_inplace	1840739
fplll_fast	1842954
dpe_addz	1882079
lll_finish	1899354
dbldotsquare	2134793
gramschmidt_dynprec	2625990
cget_dpemat	2772740
affdbldpe	2772745
addmuliu2n	3750929
submuliu2n	3836795
ZM_is_upper	3955358
mpabscmp	3965581
Babai_dpe	4279029
addmulziu	4504344
GS_extraprec	4644195
condition_bound	4644195
ZM2_lll_norms	4677597
dpe_cmpmul	4879740
dpe_cmp	4879747
gsisinv	5071663
lllfp	5209519
spread	5684611
submulziu	5769054
ZM_lll_norms	6631423
nbits2prec64	7284593
cget_dblmat	7371807
addmuliu64_inplace	9188382
submuliu64_inplace	9234468
pari_rint	9674982
rotateG_fast	10353505
update_alpha	10765486
cget_dpevec	11779753
dpe_divz	13215507
dpe_abscmp	13651935
setG2_fast	15285312
addzi	17416984
subzi	18127944
u64toi	19055299
affidpe	19213044
setG_fast	20403491
set_line	22369532
affdpe	24423354
Babai_fast	27532206
rotate	28536712
dblrotate	31060379
cget_dblvec	31329124
dpe_normalize	45851708
dpe_submulz	49580512
dpe_subz	51544262
dpe_mulz	54460200
dpe_normalize0	103497339
dbldotproduct	109971371
itodbl_exp	151678554

Generated by: LCOV version 1.16