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 30674-be81ecfdd4) Lines: 1336 1642 81.4 % Date: 2026-02-10 09:23:17 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
RgM_flop	0
dbg_flatter	0
dbg_flattergram	0
fplll	0
matkerint0	28
lllgramkerim	35
lllkerim	35
kerint	42
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
qflllgram	63
kerint0	70
incrementalGSgen	168
lllallgen	168
lllgramallgen	168
lllint	183
REDgen	196
do_SWAPgen	196
qflllgram0	245
qflll0	301
pslg	504
ZM_flattergram	961
ZM_flattergram_rank	961
gramschmidt_upper	1336
RgM_Cholesky_dynprec	2967
flattergram_i	2967
ZM_to_RM	4244
fplll_heuristic	4244
gc_lll	4833
lllgram	9089
truncexpo	12138
ZC_to_RC	15945
dpeM_diagonal_shallow	20147
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244397
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342911
absrsmall2	401466
dpe_submuluz	412412
rotateG	443224
ZM_is_knapsack	606447
ZM_flatter_rank	624829
fplll_flatter	625790
ZM_flatter	626843
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771703
dpe_muluz	799874
get_gramschmidt	1098841
realdotproduct	1183370
ZM_is_lower	1205113
lll	1243328
drop	1347121
potential	1347121
flat	1347122
sizered	1347122
affii_or_copy_gc	1390418
dpe_abssmall	1390430
submulshift	1501323
fplll_dpe	1603482
dpe_addz	1943126
vectail_inplace	2090476
fplll_fast	2103980
lll_finish	2164605
dbldotsquare	2481136
gramschmidt_dynprec	2694243
cget_dpemat	3206963
affdbldpe	3206967
addmuliu2n	4087417
mpabscmp	4096848
submuliu2n	4178406
ZM_is_upper	4236500
addmulziu	4580735
Babai_dpe	4655130
GS_extraprec	4727803
condition_bound	4727806
ZM2_lll_norms	4848604
gsisinv	5195567
dpe_cmpmul	5263491
dpe_cmp	5263501
lllfp	5371422
spread	5852912
submulziu	5923305
ZM_lll_norms	7137822
nbits2prec64	7492782
cget_dblmat	8415875
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10769056
rotateG_fast	11516310
update_alpha	11959632
cget_dpevec	13296132
dpe_divz	14076744
dpe_abscmp	14517158
setG2_fast	16985788
addzi	17783508
subzi	18525073
u64toi	19880176
affidpe	20752727
setG_fast	22614689
set_line	24885381
affdpe	25731762
Babai_fast	30144747
rotate	31873157
dblrotate	34548853
cget_dblvec	34986253
dpe_normalize	48112218
dpe_submulz	51704341
dpe_subz	53735488
dpe_mulz	56967730
dpe_normalize0	108570832
dbldotproduct	118045177
itodbl_exp	162386675

Generated by: LCOV version 1.16