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 30773-2078653b96) Lines: 1336 1642 81.4 % Date: 2026-04-01 09:27:34 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656264
Babai_fast	30147573
Babai_heuristic	288770
GS_extraprec	4727035
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847821
ZM_flatter	626843
ZM_flatter_rank	624829
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606557
ZM_is_lower	1205477
ZM_is_upper	4236524
ZM_lll_norms	7137575
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4085650
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580736
addmulzu2n	271563
addzi	17782996
affdbldpe	3207781
affdpe	25733394
affidpe	20756736
affii_or_copy_gc	1390410
cget_dblmat	8418383
cget_dblvec	34998983
cget_dpemat	3207777
cget_dpevec	13300656
condition_bound	4727035
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118040776
dbldotsquare	2482285
dblrotate	34553040
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519102
dpe_abssmall	1390419
dpe_addmuluz	342906
dpe_addz	1943114
dpe_cmp	5264559
dpe_cmpmul	5264554
dpe_divz	14078704
dpe_muluz	799874
dpe_mulz	56969470
dpe_negz	244383
dpe_normalize	48114131
dpe_normalize0	108576903
dpe_submuluz	412418
dpe_submulz	51705069
dpe_subz	53736166
dperotate	652350
dpetor	93774
drop	1346927
flat	1346927
flattergram_i	2967
fplll	0
fplll_dpe	1603894
fplll_fast	2104600
fplll_flatter	625790
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099252
gramschmidt_dynprec	2693853
gramschmidt_upper	1336
gsisinv	5195217
incrementalGSgen	168
itodbl_exp	162356562
kerint	28
kerint0	56
lll	1243426
lll_finish	2165216
lll_trivial	771767
lllall	36699
lllallgen	168
lllfp	5370985
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096531
mulshift	317610
nbits2prec64	7492042
pari_rint	10769176
potential	1346927
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31877485
rotateG	443223
rotateG_fast	11517691
setG2_fast	16987409
setG2_heuristic	187610
setG_fast	22618436
setG_heuristic	205626
set_line	24890108
sizered	1346926
spread	5852673
submuliu2n	4170937
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923333
submulzu2n	262549
subzi	18524638
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11960990
vectail_inplace	2091050

Generated by: LCOV version 1.16