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 30842-de08e65e1b) Lines: 1336 1642 81.4 % Date: 2026-04-29 09:26:11 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656348
Babai_fast	30145213
Babai_heuristic	288770
GS_extraprec	4726965
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847997
ZM_flatter	626843
ZM_flatter_rank	624829
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606417
ZM_is_lower	1205467
ZM_is_upper	4236658
ZM_lll_norms	7137803
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4087958
addmuliu642n	668118
addmuliu64_inplace	9567338
addmulziu	4580702
addmulzu2n	271563
addzi	17782918
affdbldpe	3208046
affdpe	25733090
affidpe	20756883
affii_or_copy_gc	1390390
cget_dblmat	8418339
cget_dblvec	34997064
cget_dpemat	3208048
cget_dpevec	13301354
condition_bound	4726965
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118034256
dbldotsquare	2482349
dblrotate	34551206
do_SWAPgen	196
dpeM_diagonal_shallow	1547
dpe_abscmp	14518988
dpe_abssmall	1390411
dpe_addmuluz	342905
dpe_addz	1943118
dpe_cmp	5264637
dpe_cmpmul	5264622
dpe_divz	14078538
dpe_muluz	799871
dpe_mulz	56968395
dpe_negz	244376
dpe_normalize	48113370
dpe_normalize0	108574837
dpe_submuluz	412415
dpe_submulz	51703974
dpe_subz	53735100
dperotate	652350
dpetor	23604
drop	1346928
flat	1346931
flattergram_i	2967
fplll	0
fplll_dpe	1604025
fplll_fast	2104590
fplll_flatter	625790
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099249
gramschmidt_dynprec	2693860
gramschmidt_upper	1336
gsisinv	5195147
incrementalGSgen	168
itodbl_exp	162340494
kerint	28
kerint0	56
lll	1243424
lll_finish	2165205
lll_trivial	771771
lllall	36699
lllallgen	168
lllfp	5370995
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096214
mulshift	317610
nbits2prec64	7492070
pari_rint	10768860
potential	1346929
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31875152
rotateG	443224
rotateG_fast	11517081
setG2_fast	16986377
setG2_heuristic	187610
setG_fast	22616878
setG_heuristic	205626
set_line	24888186
sizered	1346931
spread	5852457
submuliu2n	4174243
submuliu642n	683445
submuliu64_inplace	9625841
submulshift	1499787
submulziu	5923299
submulzu2n	262549
subzi	18524551
truncexpo	12138
u64toi	19876624
u64toineg	668118
update_alpha	11960380
vectail_inplace	2091034

Generated by: LCOV version 1.16