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: 2026-04-05 09:26:48 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
kerint	28
matkerint0	28
lllgramkerim	35
lllkerim	35
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
kerint0	56
qflllgram	63
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	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93769
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244390
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412418
rotateG	443224
ZM_is_knapsack	606558
ZM_flatter_rank	624825
fplll_flatter	625786
ZM_flatter	626839
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771769
dpe_muluz	799876
get_gramschmidt	1099242
realdotproduct	1183370
ZM_is_lower	1205459
lll	1243425
flat	1346915
drop	1346916
potential	1346916
sizered	1346917
affii_or_copy_gc	1390422
dpe_abssmall	1390433
submulshift	1499787
fplll_dpe	1603874
dpe_addz	1943123
vectail_inplace	2091041
fplll_fast	2104586
lll_finish	2165205
dbldotsquare	2482322
gramschmidt_dynprec	2693830
cget_dpemat	3207736
affdbldpe	3207743
addmuliu2n	4085154
mpabscmp	4096501
submuliu2n	4169895
ZM_is_upper	4236481
addmulziu	4580768
Babai_dpe	4656211
GS_extraprec	4726999
condition_bound	4726999
ZM2_lll_norms	4847795
gsisinv	5195169
dpe_cmp	5264515
dpe_cmpmul	5264516
lllfp	5370954
spread	5852624
submulziu	5923407
ZM_lll_norms	7137604
nbits2prec64	7492007
cget_dblmat	8418313
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10768991
rotateG_fast	11517547
update_alpha	11960926
cget_dpevec	13300611
dpe_divz	14078612
dpe_abscmp	14519041
setG2_fast	16987231
addzi	17783510
subzi	18525111
u64toi	19876486
affidpe	20756662
setG_fast	22618062
set_line	24889508
affdpe	25733350
Babai_fast	30147161
rotate	31877114
dblrotate	34552674
cget_dblvec	34998711
dpe_normalize	48114105
dpe_submulz	51705102
dpe_subz	53736329
dpe_mulz	56969552
dpe_normalize0	108576550
dbldotproduct	118036562
itodbl_exp	162314437

Generated by: LCOV version 1.16