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: 2025-12-11 09:22:11 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	44560
RgM_is_square_mat	45828
dpetor	94283
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244451
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412454
rotateG	443280
ZM_is_knapsack	606679
ZM_flatter_rank	624950
fplll_flatter	625911
ZM_flatter	626964
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771754
dpe_muluz	799918
get_gramschmidt	1099056
realdotproduct	1183370
ZM_is_lower	1205224
lll	1243391
flat	1347418
drop	1347419
potential	1347419
sizered	1347419
affii_or_copy_gc	1390588
dpe_abssmall	1390605
submulshift	1507243
fplll_dpe	1603887
dpe_addz	1943191
vectail_inplace	2091072
fplll_fast	2104634
lll_finish	2165329
dbldotsquare	2481951
gramschmidt_dynprec	2694836
affdbldpe	3207770
cget_dpemat	3207778
mpabscmp	4097893
addmuliu2n	4104868
submuliu2n	4197280
ZM_is_upper	4237413
addmulziu	4580864
Babai_dpe	4656326
GS_extraprec	4728454
condition_bound	4728454
ZM2_lll_norms	4848274
gsisinv	5196310
dpe_cmp	5264500
dpe_cmpmul	5264500
lllfp	5372503
spread	5853910
submulziu	5923667
ZM_lll_norms	7138251
nbits2prec64	7494266
cget_dblmat	8418503
addmuliu64_inplace	9582880
submuliu64_inplace	9633716
pari_rint	10798358
rotateG_fast	11548711
update_alpha	11992113
cget_dpevec	13299863
dpe_divz	14079502
dpe_abscmp	14519988
setG2_fast	17031414
addzi	17783901
subzi	18525144
u64toi	19904067
affidpe	20757224
setG_fast	22662899
set_line	24934387
affdpe	25735790
Babai_fast	30207884
rotate	31938272
dblrotate	34646011
cget_dblvec	34996558
dpe_normalize	48117213
dpe_submulz	51709657
dpe_subz	53740833
dpe_mulz	56974012
dpe_normalize0	108583265
dbldotproduct	118245489
itodbl_exp	162625948

Generated by: LCOV version 1.16