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 30735-65f72320ad) Lines: 1336 1642 81.4 % Date: 2026-03-12 09:23:43 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	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44537
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244392
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342903
absrsmall2	401466
dpe_submuluz	412416
rotateG	443224
ZM_is_knapsack	606597
ZM_flatter_rank	624825
fplll_flatter	625786
ZM_flatter	626839
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771771
dpe_muluz	799868
get_gramschmidt	1099271
realdotproduct	1183370
ZM_is_lower	1205491
lll	1243426
drop	1346923
flat	1346923
potential	1346923
sizered	1346923
affii_or_copy_gc	1390396
dpe_abssmall	1390422
submulshift	1499787
fplll_dpe	1603907
dpe_addz	1943117
vectail_inplace	2091096
fplll_fast	2104632
lll_finish	2165271
dbldotsquare	2482321
gramschmidt_dynprec	2693844
cget_dpemat	3207794
affdbldpe	3207811
addmuliu2n	4085282
mpabscmp	4096572
submuliu2n	4170414
ZM_is_upper	4236510
addmulziu	4580703
Babai_dpe	4656281
condition_bound	4727017
GS_extraprec	4727019
ZM2_lll_norms	4847700
gsisinv	5195214
dpe_cmpmul	5264583
dpe_cmp	5264584
lllfp	5370972
spread	5852705
submulziu	5923347
ZM_lll_norms	7137602
nbits2prec64	7492065
cget_dblmat	8418614
addmuliu64_inplace	9567325
submuliu64_inplace	9625851
pari_rint	10768841
rotateG_fast	11517571
update_alpha	11960893
cget_dpevec	13300729
dpe_divz	14078739
dpe_abscmp	14519197
setG2_fast	16987339
addzi	17783264
subzi	18524812
u64toi	19876621
affidpe	20756849
setG_fast	22618276
set_line	24890088
affdpe	25733658
Babai_fast	30147878
rotate	31877126
dblrotate	34552662
cget_dblvec	34999789
dpe_normalize	48114068
dpe_submulz	51705257
dpe_subz	53736348
dpe_mulz	56969715
dpe_normalize0	108576725
dbldotproduct	118040840
itodbl_exp	162343747

Generated by: LCOV version 1.16