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 30733-eb2d773d38) Lines: 1336 1642 81.4 % Date: 2026-03-03 09:24:12 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	244370
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412418
rotateG	443224
ZM_is_knapsack	606504
ZM_flatter_rank	624814
fplll_flatter	625775
ZM_flatter	626828
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771777
dpe_muluz	799872
get_gramschmidt	1099249
realdotproduct	1183370
ZM_is_lower	1205473
lll	1243426
drop	1346896
potential	1346896
flat	1346897
sizered	1346897
affii_or_copy_gc	1390426
dpe_abssmall	1390428
submulshift	1499787
fplll_dpe	1603892
dpe_addz	1943123
vectail_inplace	2090984
fplll_fast	2104545
lll_finish	2165161
dbldotsquare	2482221
gramschmidt_dynprec	2693791
affdbldpe	3207780
cget_dpemat	3207786
addmuliu2n	4087820
mpabscmp	4096227
submuliu2n	4174111
ZM_is_upper	4236464
addmulziu	4580706
Babai_dpe	4656223
GS_extraprec	4726924
condition_bound	4726924
ZM2_lll_norms	4847746
gsisinv	5195108
dpe_cmpmul	5264508
dpe_cmp	5264512
lllfp	5370889
spread	5852509
submulziu	5923299
ZM_lll_norms	7137551
nbits2prec64	7491940
cget_dblmat	8418163
addmuliu64_inplace	9567397
submuliu64_inplace	9625927
pari_rint	10768548
rotateG_fast	11517081
update_alpha	11960410
cget_dpevec	13300600
dpe_divz	14078479
dpe_abscmp	14518903
setG2_fast	16986374
addzi	17783216
subzi	18524863
u64toi	19876769
affidpe	20756543
setG_fast	22616867
set_line	24888634
affdpe	25733341
Babai_fast	30146097
rotate	31875512
dblrotate	34551222
cget_dblvec	34996955
dpe_normalize	48113079
dpe_submulz	51704194
dpe_subz	53735329
dpe_mulz	56968589
dpe_normalize0	108574587
dbldotproduct	118035375
itodbl_exp	162336104

Generated by: LCOV version 1.16