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
Babai_dpe	4279029
Babai_fast	27532206
Babai_heuristic	228112
GS_extraprec	4644195
REDgen	196
RgM_Cholesky_dynprec	2946
RgM_flip	32276
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15826
ZM2_lll_norms	4677597
ZM_flatter	613170
ZM_flatter_rank	611156
ZM_flattergram	954
ZM_flattergram_rank	954
ZM_is_knapsack	563572
ZM_is_lower	1154484
ZM_is_upper	3955358
ZM_lll_norms	6631423
ZM_to_RM	4218
absrsmall	567536
absrsmall2	326265
addmuliu2n	3750929
addmuliu642n	615148
addmuliu64_inplace	9188382
addmulziu	4504344
addmulzu2n	271563
addzi	17416984
affdbldpe	2772745
affdpe	24423354
affidpe	19213044
affii_or_copy_gc	1336162
cget_dblmat	7371807
cget_dblvec	31329124
cget_dpemat	2772740
cget_dpevec	11779753
condition_bound	4644195
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	109971371
dbldotsquare	2134793
dblrotate	31060379
do_SWAPgen	196
dpeM_diagonal_shallow	15092
dpe_abscmp	13651935
dpe_abssmall	1336166
dpe_addmuluz	331617
dpe_addz	1882079
dpe_cmp	4879747
dpe_cmpmul	4879740
dpe_divz	13215507
dpe_muluz	768809
dpe_mulz	54460200
dpe_negz	224592
dpe_normalize	45851708
dpe_normalize0	103497339
dpe_submuluz	392641
dpe_submulz	49580512
dpe_subz	51544262
dperotate	632562
dpetor	80033
drop	1312996
flat	1312997
flattergram_i	2946
fplll	0
fplll_dpe	1386373
fplll_fast	1842954
fplll_flatter	612110
fplll_heuristic	4218
gc_lll	4482
get_gaussred	43333
get_gramschmidt	1044718
gramschmidt_dynprec	2625990
gramschmidt_upper	1052
gsisinv	5071663
incrementalGSgen	168
itodbl_exp	151678554
kerint	42
kerint0	70
lll	1199334
lll_finish	1899354
lll_trivial	682326
lllall	36699
lllallgen	168
lllfp	5209519
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	3965581
mulshift	305489
nbits2prec64	7284593
pari_rint	9674982
potential	1312996
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	960143
realsqrdotproduct	158778
rotate	28536712
rotateG	411830
rotateG_fast	10353505
setG2_fast	15285312
setG2_heuristic	149068
setG_fast	20403491
setG_heuristic	166817
set_line	22369532
sizered	1312997
spread	5684611
submuliu2n	3836795
submuliu642n	632449
submuliu64_inplace	9234468
submulshift	1391725
submulziu	5769054
submulzu2n	262549
subzi	18127944
truncexpo	11772
u64toi	19055299
u64toineg	615148
update_alpha	10765486
vectail_inplace	1840739

Generated by: LCOV version 1.16