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 30835-e55edf4b45) Lines: 1336 1642 81.4 % Date: 2026-04-25 09:26:46 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656238
Babai_fast	30145156
Babai_heuristic	288770
GS_extraprec	4727183
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848025
ZM_flatter	626858
ZM_flatter_rank	624844
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606569
ZM_is_lower	1205480
ZM_is_upper	4236657
ZM_lll_norms	7137877
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4085791
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580765
addmulzu2n	271563
addzi	17783387
affdbldpe	3207774
affdpe	25733054
affidpe	20756632
affii_or_copy_gc	1390421
cget_dblmat	8418425
cget_dblvec	34998038
cget_dpemat	3207773
cget_dpevec	13301149
condition_bound	4727182
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118030631
dbldotsquare	2482561
dblrotate	34549941
do_SWAPgen	196
dpeM_diagonal_shallow	1547
dpe_abscmp	14518754
dpe_abssmall	1390431
dpe_addmuluz	342907
dpe_addz	1943123
dpe_cmp	5264547
dpe_cmpmul	5264536
dpe_divz	14078344
dpe_muluz	799873
dpe_mulz	56966887
dpe_negz	244395
dpe_normalize	48111504
dpe_normalize0	108571157
dpe_submuluz	412415
dpe_submulz	51702479
dpe_subz	53733601
dperotate	652347
dpetor	23604
drop	1346997
flat	1346997
flattergram_i	2967
fplll	0
fplll_dpe	1603891
fplll_fast	2104609
fplll_flatter	625805
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099262
gramschmidt_dynprec	2693993
gramschmidt_upper	1336
gsisinv	5195344
incrementalGSgen	168
itodbl_exp	162331926
kerint	28
kerint0	56
lll	1243426
lll_finish	2165230
lll_trivial	771770
lllall	36699
lllallgen	168
lllfp	5371190
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096399
mulshift	317610
nbits2prec64	7492367
pari_rint	10768844
potential	1346997
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31874399
rotateG	443223
rotateG_fast	11516653
setG2_fast	16985380
setG2_heuristic	187610
setG_fast	22616056
setG_heuristic	205626
set_line	24887431
sizered	1346996
spread	5852818
submuliu2n	4172765
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923360
submulzu2n	262549
subzi	18524935
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11959979
vectail_inplace	2091066

Generated by: LCOV version 1.16