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
Babai_dpe	4656211
Babai_fast	30147161
Babai_heuristic	288770
GS_extraprec	4726999
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847795
ZM_flatter	626839
ZM_flatter_rank	624825
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606558
ZM_is_lower	1205459
ZM_is_upper	4236481
ZM_lll_norms	7137604
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4085154
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580768
addmulzu2n	271563
addzi	17783510
affdbldpe	3207743
affdpe	25733350
affidpe	20756662
affii_or_copy_gc	1390422
cget_dblmat	8418313
cget_dblvec	34998711
cget_dpemat	3207736
cget_dpevec	13300611
condition_bound	4726999
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118036562
dbldotsquare	2482322
dblrotate	34552674
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519041
dpe_abssmall	1390433
dpe_addmuluz	342907
dpe_addz	1943123
dpe_cmp	5264515
dpe_cmpmul	5264516
dpe_divz	14078612
dpe_muluz	799876
dpe_mulz	56969552
dpe_negz	244390
dpe_normalize	48114105
dpe_normalize0	108576550
dpe_submuluz	412418
dpe_submulz	51705102
dpe_subz	53736329
dperotate	652350
dpetor	93769
drop	1346916
flat	1346915
flattergram_i	2967
fplll	0
fplll_dpe	1603874
fplll_fast	2104586
fplll_flatter	625786
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099242
gramschmidt_dynprec	2693830
gramschmidt_upper	1336
gsisinv	5195169
incrementalGSgen	168
itodbl_exp	162314437
kerint	28
kerint0	56
lll	1243425
lll_finish	2165205
lll_trivial	771769
lllall	36699
lllallgen	168
lllfp	5370954
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096501
mulshift	317610
nbits2prec64	7492007
pari_rint	10768991
potential	1346916
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31877114
rotateG	443224
rotateG_fast	11517547
setG2_fast	16987231
setG2_heuristic	187610
setG_fast	22618062
setG_heuristic	205626
set_line	24889508
sizered	1346917
spread	5852624
submuliu2n	4169895
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923407
submulzu2n	262549
subzi	18525111
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11960926
vectail_inplace	2091041

Generated by: LCOV version 1.16