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: 2025-12-10 09:22:03 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	244446
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412454
rotateG	443279
ZM_is_knapsack	606652
ZM_flatter_rank	624945
fplll_flatter	625906
ZM_flatter	626959
dperotate	652460
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771750
dpe_muluz	799918
get_gramschmidt	1099064
realdotproduct	1183370
ZM_is_lower	1205231
lll	1243390
drop	1347386
potential	1347390
flat	1347391
sizered	1347391
affii_or_copy_gc	1390592
dpe_abssmall	1390595
submulshift	1507243
fplll_dpe	1603890
dpe_addz	1943190
vectail_inplace	2091057
fplll_fast	2104607
lll_finish	2165310
dbldotsquare	2481803
gramschmidt_dynprec	2694778
affdbldpe	3207776
cget_dpemat	3207781
mpabscmp	4097610
addmuliu2n	4106402
submuliu2n	4200282
ZM_is_upper	4237362
addmulziu	4580838
Babai_dpe	4656348
GS_extraprec	4728338
condition_bound	4728338
ZM2_lll_norms	4848190
gsisinv	5196205
dpe_cmp	5264525
dpe_cmpmul	5264528
lllfp	5372413
spread	5853782
submulziu	5923734
ZM_lll_norms	7138143
nbits2prec64	7494143
cget_dblmat	8418405
addmuliu64_inplace	9582880
submuliu64_inplace	9633716
pari_rint	10797724
rotateG_fast	11547724
update_alpha	11991215
cget_dpevec	13299713
dpe_divz	14079470
dpe_abscmp	14519953
setG2_fast	17030012
addzi	17783918
subzi	18525337
u64toi	19904067
affidpe	20757106
setG_fast	22661154
set_line	24932116
affdpe	25735807
Babai_fast	30205189
rotate	31935468
dblrotate	34643070
cget_dblvec	34995234
dpe_normalize	48116817
dpe_submulz	51709313
dpe_subz	53740486
dpe_mulz	56973670
dpe_normalize0	108582359
dbldotproduct	118235671
itodbl_exp	162587841

Generated by: LCOV version 1.16