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 30848-b1463d63da) Lines: 1336 1642 81.4 % Date: 2026-04-30 09:27:33 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656404
Babai_fast	30148708
Babai_heuristic	288770
GS_extraprec	4727122
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847948
ZM_flatter	626850
ZM_flatter_rank	624836
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606606
ZM_is_lower	1205479
ZM_is_upper	4236780
ZM_lll_norms	7137981
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4085044
addmuliu642n	668118
addmuliu64_inplace	9567338
addmulziu	4580763
addmulzu2n	271563
addzi	17783270
affdbldpe	3208057
affdpe	25733588
affidpe	20757260
affii_or_copy_gc	1390408
cget_dblmat	8419106
cget_dblvec	35001403
cget_dpemat	3208063
cget_dpevec	13301515
condition_bound	4727122
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118042633
dbldotsquare	2482536
dblrotate	34555272
do_SWAPgen	196
dpeM_diagonal_shallow	1547
dpe_abscmp	14519290
dpe_abssmall	1390433
dpe_addmuluz	342907
dpe_addz	1943123
dpe_cmp	5264688
dpe_cmpmul	5264685
dpe_divz	14078877
dpe_muluz	799876
dpe_mulz	56969892
dpe_negz	244396
dpe_normalize	48114624
dpe_normalize0	108577937
dpe_submuluz	412418
dpe_submulz	51705331
dpe_subz	53736409
dperotate	652350
dpetor	23604
drop	1346984
flat	1346985
flattergram_i	2967
fplll	0
fplll_dpe	1604031
fplll_fast	2104783
fplll_flatter	625797
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1099266
gramschmidt_dynprec	2693970
gramschmidt_upper	1336
gsisinv	5195300
incrementalGSgen	168
itodbl_exp	162339284
kerint	28
kerint0	56
lll	1243426
lll_finish	2165390
lll_trivial	771768
lllall	36699
lllallgen	168
lllfp	5371163
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096767
mulshift	317610
nbits2prec64	7492348
pari_rint	10770409
potential	1346986
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31879299
rotateG	443224
rotateG_fast	11518446
setG2_fast	16988447
setG2_heuristic	187610
setG_fast	22619713
setG_heuristic	205626
set_line	24891419
sizered	1346986
spread	5852802
submuliu2n	4170149
submuliu642n	683445
submuliu64_inplace	9625841
submulshift	1499787
submulziu	5923382
submulzu2n	262549
subzi	18524907
truncexpo	12138
u64toi	19876624
u64toineg	668118
update_alpha	11961807
vectail_inplace	2091222

Generated by: LCOV version 1.16