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 30835-e55edf4b45) Lines: 1336 1642 81.4 % Date: 2026-04-24 09:27:20 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656200
Babai_fast	30143388
Babai_heuristic	288770
GS_extraprec	4727094
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847884
ZM_flatter	626845
ZM_flatter_rank	624831
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606608
ZM_is_lower	1205461
ZM_is_upper	4236602
ZM_lll_norms	7137756
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4082630
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580689
addmulzu2n	271563
addzi	17782688
affdbldpe	3207745
affdpe	25732801
affidpe	20756411
affii_or_copy_gc	1390396
cget_dblmat	8418513
cget_dblvec	34999129
cget_dpemat	3207747
cget_dpevec	13301001
condition_bound	4727094
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118017989
dbldotsquare	2482560
dblrotate	34548374
do_SWAPgen	196
dpeM_diagonal_shallow	1547
dpe_abscmp	14518735
dpe_abssmall	1390419
dpe_addmuluz	342907
dpe_addz	1943117
dpe_cmp	5264488
dpe_cmpmul	5264484
dpe_divz	14078243
dpe_muluz	799875
dpe_mulz	56966768
dpe_negz	244390
dpe_normalize	48111569
dpe_normalize0	108571025
dpe_submuluz	412417
dpe_submulz	51702496
dpe_subz	53733545
dperotate	652350
dpetor	23604
drop	1346972
flat	1346973
flattergram_i	2967
fplll	0
fplll_dpe	1603873
fplll_fast	2104635
fplll_flatter	625792
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099243
gramschmidt_dynprec	2693945
gramschmidt_upper	1336
gsisinv	5195258
incrementalGSgen	168
itodbl_exp	162292242
kerint	28
kerint0	56
lll	1243426
lll_finish	2165244
lll_trivial	771771
lllall	36699
lllallgen	168
lllfp	5371119
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096515
mulshift	317610
nbits2prec64	7492279
pari_rint	10769308
potential	1346972
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31872920
rotateG	443224
rotateG_fast	11516133
setG2_fast	16984937
setG2_heuristic	187610
setG_fast	22615762
setG_heuristic	205626
set_line	24887174
sizered	1346973
spread	5852756
submuliu2n	4168213
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923298
submulzu2n	262549
subzi	18524288
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11959525
vectail_inplace	2091081

Generated by: LCOV version 1.16