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 30585-4c42182400) Lines: 1336 1642 81.4 % Date: 2025-12-23 09:21:19 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	44538
RgM_is_square_mat	45828
dpetor	93800
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244403
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342912
absrsmall2	401466
dpe_submuluz	412412
rotateG	443224
ZM_is_knapsack	606291
ZM_flatter_rank	624834
fplll_flatter	625795
ZM_flatter	626848
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771686
dpe_muluz	799872
get_gramschmidt	1098828
realdotproduct	1183370
ZM_is_lower	1205100
lll	1243322
drop	1347114
potential	1347114
sizered	1347115
flat	1347116
affii_or_copy_gc	1390411
dpe_abssmall	1390418
submulshift	1501323
fplll_dpe	1603398
dpe_addz	1943126
vectail_inplace	2090219
fplll_fast	2103751
lll_finish	2164349
dbldotsquare	2480963
gramschmidt_dynprec	2694230
cget_dpemat	3206792
affdbldpe	3206793
addmuliu2n	4087760
mpabscmp	4096267
submuliu2n	4180384
ZM_is_upper	4236411
addmulziu	4580799
Babai_dpe	4654988
GS_extraprec	4727807
condition_bound	4727807
ZM2_lll_norms	4847771
gsisinv	5195548
dpe_cmpmul	5263331
dpe_cmp	5263334
lllfp	5371391
spread	5852739
submulziu	5923330
ZM_lll_norms	7136734
nbits2prec64	7492753
cget_dblmat	8414972
addmuliu64_inplace	9573025
submuliu64_inplace	9624052
pari_rint	10773224
rotateG_fast	11519170
update_alpha	11962519
cget_dpevec	13295673
dpe_divz	14075934
dpe_abscmp	14516376
setG2_fast	16986701
addzi	17783288
subzi	18524766
u64toi	19881722
affidpe	20751738
setG_fast	22614208
set_line	24884385
affdpe	25730807
Babai_fast	30142731
rotate	31875512
dblrotate	34557399
cget_dblvec	34980391
dpe_normalize	48108366
dpe_submulz	51700515
dpe_subz	53731677
dpe_mulz	56963721
dpe_normalize0	108562174
dbldotproduct	118024721
itodbl_exp	162325356

Generated by: LCOV version 1.16