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 30558-88b7dc3357) Lines: 1335 1641 81.4 % Date: 2025-11-26 09:22:00 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	20287
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44559
RgM_is_square_mat	45828
dpetor	94271
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244425
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412454
rotateG	443280
ZM_is_knapsack	606619
ZM_flatter_rank	624475
fplll_flatter	625436
ZM_flatter	626489
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771729
dpe_muluz	799918
get_gramschmidt	1098367
realdotproduct	1183370
ZM_is_lower	1204549
lll	1243327
flat	1345989
drop	1345994
potential	1345994
sizered	1345994
affii_or_copy_gc	1390591
dpe_abssmall	1390606
submulshift	1507243
fplll_dpe	1603178
dpe_addz	1943187
vectail_inplace	2090302
fplll_fast	2103821
lll_finish	2164531
dbldotsquare	2480865
gramschmidt_dynprec	2691983
affdbldpe	3206348
cget_dpemat	3206354
mpabscmp	4093407
addmuliu2n	4107256
submuliu2n	4200940
ZM_is_upper	4233847
addmulziu	4580842
Babai_dpe	4654264
GS_extraprec	4724959
condition_bound	4724959
ZM2_lll_norms	4843590
gsisinv	5192591
dpe_cmpmul	5262472
dpe_cmp	5262475
lllfp	5368134
spread	5850131
submulziu	5923712
ZM_lll_norms	7132715
nbits2prec64	7486943
cget_dblmat	8415245
addmuliu64_inplace	9581970
submuliu64_inplace	9632820
pari_rint	10796250
rotateG_fast	11546769
update_alpha	11990230
cget_dpevec	13293114
dpe_divz	14075273
dpe_abscmp	14515784
setG2_fast	17028421
addzi	17783860
subzi	18525286
u64toi	19902261
affidpe	20749987
setG_fast	22657351
set_line	24927750
affdpe	25731410
Babai_fast	30202397
rotate	31932742
dblrotate	34640343
cget_dblvec	34981052
dpe_normalize	48108666
dpe_submulz	51702270
dpe_subz	53733451
dpe_mulz	56964592
dpe_normalize0	108561343
dbldotproduct	118226404
itodbl_exp	162587712

Generated by: LCOV version 1.16