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 30465-b757eeabfc) Lines: 1335 1641 81.4 % Date: 2025-08-12 09:23:53 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4654131
Babai_fast	30199441
Babai_heuristic	288770
GS_extraprec	4724586
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4841368
ZM_flatter	626478
ZM_flatter_rank	624464
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606367
ZM_is_lower	1204524
ZM_is_upper	4233548
ZM_lll_norms	7130214
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4104461
addmuliu642n	671548
addmuliu64_inplace	9581364
addmulziu	4580836
addmulzu2n	271563
addzi	17783371
affdbldpe	3206286
affdpe	25731137
affidpe	20749434
affii_or_copy_gc	1390576
cget_dblmat	8414133
cget_dblvec	34977100
cget_dpemat	3206285
cget_dpevec	13292560
condition_bound	4724586
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118220315
dbldotsquare	2480501
dblrotate	34635335
do_SWAPgen	196
dpeM_diagonal_shallow	20287
dpe_abscmp	14515541
dpe_abssmall	1390598
dpe_addmuluz	342913
dpe_addz	1943180
dpe_cmp	5262358
dpe_cmpmul	5262362
dpe_divz	14075043
dpe_muluz	799914
dpe_mulz	56964251
dpe_negz	244413
dpe_normalize	48108346
dpe_normalize0	108560478
dpe_submuluz	412454
dpe_submulz	51702028
dpe_subz	53733215
dperotate	652462
dpetor	94271
drop	1345862
flat	1345862
flattergram_i	2967
fplll	0
fplll_dpe	1603144
fplll_fast	2103536
fplll_flatter	625425
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44560
get_gramschmidt	1098339
gramschmidt_dynprec	2691724
gramschmidt_upper	1336
gsisinv	5192212
incrementalGSgen	168
itodbl_exp	162610679
kerint	42
kerint0	70
lll	1243312
lll_finish	2164240
lll_trivial	771710
lllall	36699
lllallgen	168
lllfp	5367706
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4092914
mulshift	318942
nbits2prec64	7486234
pari_rint	10794105
potential	1345862
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31927710
rotateG	443280
rotateG_fast	11545141
setG2_fast	17026242
setG2_heuristic	187610
setG_fast	22654516
setG_heuristic	205626
set_line	24924896
sizered	1345862
spread	5849508
submuliu2n	4197021
submuliu642n	687471
submuliu64_inplace	9632106
submulshift	1507243
submulziu	5923673
submulzu2n	262549
subzi	18524882
truncexpo	12138
u64toi	19900941
u64toineg	671548
update_alpha	11988524
vectail_inplace	2090018

Generated by: LCOV version 1.16