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 30549-267e77144f) Lines: 1335 1641 81.4 % Date: 2025-11-16 09:22:34 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	20286
RgM_flip	34917
lllgramint	36439
lllall	36699
get_gaussred	44559
RgM_is_square_mat	45828
dpetor	94269
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244437
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412454
rotateG	443280
ZM_is_knapsack	606480
ZM_flatter_rank	624498
fplll_flatter	625459
ZM_flatter	626512
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771732
dpe_muluz	799918
get_gramschmidt	1098364
realdotproduct	1183370
ZM_is_lower	1204549
lll	1243328
potential	1346005
sizered	1346005
drop	1346006
flat	1346006
affii_or_copy_gc	1390587
dpe_abssmall	1390603
submulshift	1507243
fplll_dpe	1603181
dpe_addz	1943188
vectail_inplace	2090166
fplll_fast	2103679
lll_finish	2164379
dbldotsquare	2480819
gramschmidt_dynprec	2692012
affdbldpe	3206359
cget_dpemat	3206359
mpabscmp	4093513
addmuliu2n	4104555
submuliu2n	4196798
ZM_is_upper	4233878
addmulziu	4580834
Babai_dpe	4654256
GS_extraprec	4724995
condition_bound	4724995
ZM2_lll_norms	4843828
gsisinv	5192600
dpe_cmpmul	5262467
dpe_cmp	5262469
lllfp	5368169
spread	5850003
submulziu	5923687
ZM_lll_norms	7132862
nbits2prec64	7486882
cget_dblmat	8414675
addmuliu64_inplace	9581364
submuliu64_inplace	9632106
pari_rint	10794785
rotateG_fast	11545745
update_alpha	11989158
cget_dpevec	13293209
dpe_divz	14075383
dpe_abscmp	14515834
setG2_fast	17026869
addzi	17784012
subzi	18525448
u64toi	19900941
affidpe	20750155
setG_fast	22655890
set_line	24926109
affdpe	25731661
Babai_fast	30200757
rotate	31929535
dblrotate	34637234
cget_dblvec	34980391
dpe_normalize	48109234
dpe_submulz	51703102
dpe_subz	53734304
dpe_mulz	56965468
dpe_normalize0	108562697
dbldotproduct	118222368
itodbl_exp	162608765

Generated by: LCOV version 1.16