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 30831-19b50a36d0) Lines: 1336 1642 81.4 % Date: 2026-04-21 09:26:02 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656218
Babai_fast	30139330
Babai_heuristic	288770
GS_extraprec	4727071
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848195
ZM_flatter	626848
ZM_flatter_rank	624834
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606377
ZM_is_lower	1205482
ZM_is_upper	4236620
ZM_lll_norms	7137849
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4084700
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580781
addmulzu2n	271563
addzi	17783453
affdbldpe	3207804
affdpe	25732795
affidpe	20756377
affii_or_copy_gc	1390416
cget_dblmat	8417712
cget_dblvec	34994742
cget_dpemat	3207805
cget_dpevec	13301209
condition_bound	4727071
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118005303
dbldotsquare	2482382
dblrotate	34543924
do_SWAPgen	196
dpeM_diagonal_shallow	1547
dpe_abscmp	14518618
dpe_abssmall	1390430
dpe_addmuluz	342907
dpe_addz	1943123
dpe_cmp	5264523
dpe_cmpmul	5264520
dpe_divz	14078143
dpe_muluz	799876
dpe_mulz	56966166
dpe_negz	244389
dpe_normalize	48110871
dpe_normalize0	108569548
dpe_submuluz	412418
dpe_submulz	51701819
dpe_subz	53732891
dperotate	652350
dpetor	23604
drop	1346973
flat	1346973
flattergram_i	2967
fplll	0
fplll_dpe	1603902
fplll_fast	2104431
fplll_flatter	625795
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1099266
gramschmidt_dynprec	2693943
gramschmidt_upper	1336
gsisinv	5195253
incrementalGSgen	168
itodbl_exp	162239296
kerint	28
kerint0	56
lll	1243427
lll_finish	2165032
lll_trivial	771774
lllall	36699
lllallgen	168
lllfp	5371124
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096076
mulshift	317610
nbits2prec64	7492251
pari_rint	10767512
potential	1346973
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31868572
rotateG	443224
rotateG_fast	11514666
setG2_fast	16982399
setG2_heuristic	187610
setG_fast	22612165
setG_heuristic	205626
set_line	24883344
sizered	1346973
spread	5852531
submuliu2n	4171424
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923371
submulzu2n	262549
subzi	18524894
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11958084
vectail_inplace	2090871

Generated by: LCOV version 1.16