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 30786-ffec283a2b) Lines: 1336 1642 81.4 % Date: 2026-04-07 09:25:56 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
kerint	28
matkerint0	28
lllgramkerim	35
lllkerim	35
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
kerint0	56
qflllgram	63
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	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93772
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244391
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412416
rotateG	443224
ZM_is_knapsack	606624
ZM_flatter_rank	624836
fplll_flatter	625797
ZM_flatter	626850
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771772
dpe_muluz	799874
get_gramschmidt	1099254
realdotproduct	1183370
ZM_is_lower	1205472
lll	1243427
drop	1346983
potential	1346984
flat	1346985
sizered	1346985
affii_or_copy_gc	1390399
dpe_abssmall	1390424
submulshift	1499787
fplll_dpe	1603881
dpe_addz	1943119
vectail_inplace	2091095
fplll_fast	2104651
lll_finish	2165255
dbldotsquare	2482361
gramschmidt_dynprec	2693968
affdbldpe	3207757
cget_dpemat	3207767
addmuliu2n	4086238
mpabscmp	4096657
submuliu2n	4172684
ZM_is_upper	4236628
addmulziu	4580697
Babai_dpe	4656241
GS_extraprec	4727176
condition_bound	4727176
ZM2_lll_norms	4847912
gsisinv	5195353
dpe_cmpmul	5264518
dpe_cmp	5264519
lllfp	5371153
spread	5852872
submulziu	5923243
ZM_lll_norms	7137792
nbits2prec64	7492341
cget_dblmat	8418598
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10769404
rotateG_fast	11517454
update_alpha	11960801
cget_dpevec	13300706
dpe_divz	14078593
dpe_abscmp	14519073
setG2_fast	16986645
addzi	17782754
subzi	18524380
u64toi	19876486
affidpe	20756565
setG_fast	22617212
set_line	24888490
affdpe	25733107
Babai_fast	30146537
rotate	31876872
dblrotate	34552183
cget_dblvec	34999295
dpe_normalize	48113580
dpe_submulz	51704353
dpe_subz	53735423
dpe_mulz	56968704
dpe_normalize0	108575478
dbldotproduct	118028296
itodbl_exp	162259524

Generated by: LCOV version 1.16