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
Babai_dpe	4656241
Babai_fast	30146537
Babai_heuristic	288770
GS_extraprec	4727176
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847912
ZM_flatter	626850
ZM_flatter_rank	624836
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606624
ZM_is_lower	1205472
ZM_is_upper	4236628
ZM_lll_norms	7137792
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4086238
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580697
addmulzu2n	271563
addzi	17782754
affdbldpe	3207757
affdpe	25733107
affidpe	20756565
affii_or_copy_gc	1390399
cget_dblmat	8418598
cget_dblvec	34999295
cget_dpemat	3207767
cget_dpevec	13300706
condition_bound	4727176
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118028296
dbldotsquare	2482361
dblrotate	34552183
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519073
dpe_abssmall	1390424
dpe_addmuluz	342907
dpe_addz	1943119
dpe_cmp	5264519
dpe_cmpmul	5264518
dpe_divz	14078593
dpe_muluz	799874
dpe_mulz	56968704
dpe_negz	244391
dpe_normalize	48113580
dpe_normalize0	108575478
dpe_submuluz	412416
dpe_submulz	51704353
dpe_subz	53735423
dperotate	652350
dpetor	93772
drop	1346983
flat	1346985
flattergram_i	2967
fplll	0
fplll_dpe	1603881
fplll_fast	2104651
fplll_flatter	625797
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099254
gramschmidt_dynprec	2693968
gramschmidt_upper	1336
gsisinv	5195353
incrementalGSgen	168
itodbl_exp	162259524
kerint	28
kerint0	56
lll	1243427
lll_finish	2165255
lll_trivial	771772
lllall	36699
lllallgen	168
lllfp	5371153
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096657
mulshift	317610
nbits2prec64	7492341
pari_rint	10769404
potential	1346984
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31876872
rotateG	443224
rotateG_fast	11517454
setG2_fast	16986645
setG2_heuristic	187610
setG_fast	22617212
setG_heuristic	205626
set_line	24888490
sizered	1346985
spread	5852872
submuliu2n	4172684
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923243
submulzu2n	262549
subzi	18524380
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11960801
vectail_inplace	2091095

Generated by: LCOV version 1.16