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 30556-bb9f5f8fc8) Lines: 1335 1641 81.4 % Date: 2025-11-25 09:20:50 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4642374
Babai_fast	29954630
Babai_heuristic	288721
GS_extraprec	4719414
REDgen	196
RgM_Cholesky_dynprec	2918
RgM_flip	34813
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15889
ZM2_lll_norms	4834905
ZM_flatter	625740
ZM_flatter_rank	623726
ZM_flattergram	947
ZM_flattergram_rank	947
ZM_is_knapsack	603815
ZM_is_lower	1202905
ZM_is_upper	4226947
ZM_lll_norms	7116198
ZM_to_RM	4237
absrsmall	695823
absrsmall2	400996
addmuliu2n	4096917
addmuliu642n	667356
addmuliu64_inplace	9323345
addmulziu	4580412
addmulzu2n	271563
addzi	17781947
affdbldpe	3199490
affdpe	25402275
affidpe	20637092
affii_or_copy_gc	1389316
cget_dblmat	8392351
cget_dblvec	34834476
cget_dpemat	3199497
cget_dpevec	13249936
condition_bound	4719414
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	116801404
dbldotsquare	2470416
dblrotate	34390390
do_SWAPgen	196
dpeM_diagonal_shallow	20217
dpe_abscmp	14423774
dpe_abssmall	1389336
dpe_addmuluz	342872
dpe_addz	1942987
dpe_cmp	5251738
dpe_cmpmul	5251738
dpe_divz	13982436
dpe_muluz	797362
dpe_mulz	55701176
dpe_negz	240962
dpe_normalize	47082823
dpe_normalize0	106420743
dpe_submuluz	409939
dpe_submulz	50449568
dpe_subz	52477535
dperotate	652336
dpetor	93921
drop	1344016
flat	1344017
flattergram_i	2918
fplll	0
fplll_dpe	1599747
fplll_fast	2098092
fplll_flatter	624673
fplll_heuristic	4237
gc_lll	4814
get_gaussred	44510
get_gramschmidt	1096566
gramschmidt_dynprec	2688035
gramschmidt_upper	1280
gsisinv	5186150
incrementalGSgen	168
itodbl_exp	160511862
kerint	42
kerint0	70
lll	1241458
lll_finish	2158324
lll_trivial	769078
lllall	36699
lllallgen	168
lllfp	5359447
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4081559
mulshift	316711
nbits2prec64	7475576
pari_rint	10697210
potential	1344017
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1182454
realsqrdotproduct	197336
rotate	31698861
rotateG	443217
rotateG_fast	11463539
setG2_fast	16904853
setG2_heuristic	187582
setG_fast	22506234
setG_heuristic	205464
set_line	24769421
sizered	1344018
spread	5840651
submuliu2n	4178633
submuliu642n	683409
submuliu64_inplace	9364045
submulshift	1494285
submulziu	5905067
submulzu2n	262549
subzi	18511206
truncexpo	11844
u64toi	19370799
u64toineg	667356
update_alpha	11906804
vectail_inplace	2084935

Generated by: LCOV version 1.16