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 30571-c0dfe82732) Lines: 1336 1642 81.4 % Date: 2025-12-07 09:22:06 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	961
ZM_flattergram_rank	961
gramschmidt_upper	1336
RgM_Cholesky_dynprec	2967
flattergram_i	2967
ZM_to_RM	4244
fplll_heuristic	4244
gc_lll	4833
lllgram	9089
truncexpo	12138
ZC_to_RC	15945
dpeM_diagonal_shallow	20293
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44559
RgM_is_square_mat	45828
dpetor	94283
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244432
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412452
rotateG	443280
ZM_is_knapsack	606677
ZM_flatter_rank	624937
fplll_flatter	625898
ZM_flatter	626951
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771756
dpe_muluz	799914
get_gramschmidt	1099041
realdotproduct	1183370
ZM_is_lower	1205207
lll	1243391
drop	1347365
flat	1347365
potential	1347365
sizered	1347365
affii_or_copy_gc	1390599
dpe_abssmall	1390607
submulshift	1507243
fplll_dpe	1603865
dpe_addz	1943189
vectail_inplace	2091059
fplll_fast	2104620
lll_finish	2165314
dbldotsquare	2482145
gramschmidt_dynprec	2694728
affdbldpe	3207728
cget_dpemat	3207754
mpabscmp	4097506
addmuliu2n	4102330
submuliu2n	4195127
ZM_is_upper	4237288
addmulziu	4580872
Babai_dpe	4656248
GS_extraprec	4728298
condition_bound	4728298
ZM2_lll_norms	4848082
gsisinv	5196159
dpe_cmp	5264421
dpe_cmpmul	5264421
lllfp	5372335
spread	5853752
submulziu	5923758
ZM_lll_norms	7138033
nbits2prec64	7494001
cget_dblmat	8418462
addmuliu64_inplace	9582880
submuliu64_inplace	9633716
pari_rint	10798166
rotateG_fast	11546813
update_alpha	11990284
cget_dpevec	13300123
dpe_divz	14079013
dpe_abscmp	14519502
setG2_fast	17028414
addzi	17783993
subzi	18525465
u64toi	19904067
affidpe	20756866
setG_fast	22659593
set_line	24930842
affdpe	25735193
Babai_fast	30202619
rotate	31932650
dblrotate	34640350
cget_dblvec	34996102
dpe_normalize	48114758
dpe_submulz	51707109
dpe_subz	53738244
dpe_mulz	56971363
dpe_normalize0	108577781
dbldotproduct	118221552
itodbl_exp	162568341

Generated by: LCOV version 1.16