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 30775-9d8a55740a) Lines: 1336 1642 81.4 % Date: 2026-04-06 09:26:18 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656316
Babai_fast	30148982
Babai_heuristic	288770
GS_extraprec	4727330
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848101
ZM_flatter	626863
ZM_flatter_rank	624849
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606637
ZM_is_lower	1205496
ZM_is_upper	4236784
ZM_lll_norms	7138013
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4084757
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580728
addmulzu2n	271563
addzi	17782771
affdbldpe	3207809
affdpe	25733503
affidpe	20756959
affii_or_copy_gc	1390398
cget_dblmat	8418788
cget_dblvec	35001109
cget_dpemat	3207811
cget_dpevec	13300875
condition_bound	4727330
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118041117
dbldotsquare	2482428
dblrotate	34554492
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519347
dpe_abssmall	1390412
dpe_addmuluz	342907
dpe_addz	1943111
dpe_cmp	5264624
dpe_cmpmul	5264619
dpe_divz	14078856
dpe_muluz	799874
dpe_mulz	56969961
dpe_negz	244401
dpe_normalize	48114573
dpe_normalize0	108577718
dpe_submuluz	412416
dpe_submulz	51705519
dpe_subz	53736603
dperotate	652348
dpetor	93772
drop	1347047
flat	1347049
flattergram_i	2967
fplll	0
fplll_dpe	1603907
fplll_fast	2104701
fplll_flatter	625810
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1099279
gramschmidt_dynprec	2694097
gramschmidt_upper	1336
gsisinv	5195507
incrementalGSgen	168
itodbl_exp	162309624
kerint	28
kerint0	56
lll	1243426
lll_finish	2165307
lll_trivial	771771
lllall	36699
lllallgen	168
lllfp	5371353
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097002
mulshift	317610
nbits2prec64	7492641
pari_rint	10769697
potential	1347048
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31878997
rotateG	443223
rotateG_fast	11518171
setG2_fast	16988235
setG2_heuristic	187610
setG_fast	22619516
setG_heuristic	205626
set_line	24890924
sizered	1347050
spread	5853039
submuliu2n	4169705
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923233
submulzu2n	262549
subzi	18524416
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11961587
vectail_inplace	2091143

Generated by: LCOV version 1.16