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 30601-812dd05845) Lines: 1336 1642 81.4 % Date: 2026-01-06 09:22:34 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655131
Babai_fast	30142834
Babai_heuristic	288770
GS_extraprec	4727823
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848753
ZM_flatter	626849
ZM_flatter_rank	624835
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606385
ZM_is_lower	1205112
ZM_is_upper	4236538
ZM_lll_norms	7137910
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4089935
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580817
addmulzu2n	271563
addzi	17782993
affdbldpe	3206953
affdpe	25731475
affidpe	20752707
affii_or_copy_gc	1390402
cget_dblmat	8415645
cget_dblvec	34984524
cget_dpemat	3206949
cget_dpevec	13296291
condition_bound	4727823
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118039272
dbldotsquare	2481151
dblrotate	34547100
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14517032
dpe_abssmall	1390422
dpe_addmuluz	342913
dpe_addz	1943124
dpe_cmp	5263487
dpe_cmpmul	5263482
dpe_divz	14076577
dpe_muluz	799874
dpe_mulz	56966863
dpe_negz	244388
dpe_normalize	48111491
dpe_normalize0	108569042
dpe_submuluz	412410
dpe_submulz	51703512
dpe_subz	53734597
dperotate	652348
dpetor	93802
drop	1347137
flat	1347139
flattergram_i	2967
fplll	0
fplll_dpe	1603477
fplll_fast	2103916
fplll_flatter	625796
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1098838
gramschmidt_dynprec	2694274
gramschmidt_upper	1336
gsisinv	5195577
incrementalGSgen	168
itodbl_exp	162367435
kerint	42
kerint0	70
lll	1243329
lll_finish	2164528
lll_trivial	771702
lllall	36699
lllallgen	168
lllfp	5371475
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096672
mulshift	317717
nbits2prec64	7492846
pari_rint	10768451
potential	1347137
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31871355
rotateG	443223
rotateG_fast	11515703
setG2_fast	16984674
setG2_heuristic	187610
setG_fast	22613377
setG_heuristic	205626
set_line	24883827
sizered	1347139
spread	5852856
submuliu2n	4182326
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923217
submulzu2n	262549
subzi	18524576
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11959032
vectail_inplace	2090401

Generated by: LCOV version 1.16