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 30452-bc38797c51) Lines: 1335 1641 81.4 % Date: 2025-08-07 09:23:54 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4654235
Babai_fast	30196311
Babai_heuristic	288770
GS_extraprec	4724880
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4841537
ZM_flatter	626501
ZM_flatter_rank	624487
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606456
ZM_is_lower	1204561
ZM_is_upper	4233769
ZM_lll_norms	7130509
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4105668
addmuliu642n	671548
addmuliu64_inplace	9581364
addmulziu	4580864
addmulzu2n	271563
addzi	17783316
affdbldpe	3206363
affdpe	25731182
affidpe	20749772
affii_or_copy_gc	1390576
cget_dblmat	8414618
cget_dblvec	34977929
cget_dpemat	3206369
cget_dpevec	13293259
condition_bound	4724880
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118206183
dbldotsquare	2480816
dblrotate	34632231
do_SWAPgen	196
dpeM_diagonal_shallow	20287
dpe_abscmp	14515488
dpe_abssmall	1390600
dpe_addmuluz	342913
dpe_addz	1943186
dpe_cmp	5262462
dpe_cmpmul	5262451
dpe_divz	14074999
dpe_muluz	799918
dpe_mulz	56962186
dpe_negz	244438
dpe_normalize	48106172
dpe_normalize0	108555968
dpe_submuluz	412454
dpe_submulz	51699891
dpe_subz	53731032
dperotate	652460
dpetor	94271
drop	1345954
flat	1345955
flattergram_i	2967
fplll	0
fplll_dpe	1603183
fplll_fast	2103660
fplll_flatter	625448
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44559
get_gramschmidt	1098379
gramschmidt_dynprec	2691905
gramschmidt_upper	1336
gsisinv	5192517
incrementalGSgen	168
itodbl_exp	162611336
kerint	42
kerint0	70
lll	1243315
lll_finish	2164367
lll_trivial	771719
lllall	36699
lllallgen	168
lllfp	5367998
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4092968
mulshift	318942
nbits2prec64	7486695
pari_rint	10794389
potential	1345954
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31924479
rotateG	443279
rotateG_fast	11544086
setG2_fast	17024324
setG2_heuristic	187610
setG_fast	22652770
setG_heuristic	205626
set_line	24923198
sizered	1345955
spread	5849891
submuliu2n	4199834
submuliu642n	687471
submuliu64_inplace	9632106
submulshift	1507243
submulziu	5923679
submulzu2n	262549
subzi	18524690
truncexpo	12138
u64toi	19900941
u64toineg	671548
update_alpha	11987444
vectail_inplace	2090149

Generated by: LCOV version 1.16