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
Babai_dpe	4654264
Babai_fast	30202397
Babai_heuristic	288770
GS_extraprec	4724959
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4843590
ZM_flatter	626489
ZM_flatter_rank	624475
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606619
ZM_is_lower	1204549
ZM_is_upper	4233847
ZM_lll_norms	7132715
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4107256
addmuliu642n	671548
addmuliu64_inplace	9581970
addmulziu	4580842
addmulzu2n	271563
addzi	17783860
affdbldpe	3206348
affdpe	25731410
affidpe	20749987
affii_or_copy_gc	1390591
cget_dblmat	8415245
cget_dblvec	34981052
cget_dpemat	3206354
cget_dpevec	13293114
condition_bound	4724959
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118226404
dbldotsquare	2480865
dblrotate	34640343
do_SWAPgen	196
dpeM_diagonal_shallow	20287
dpe_abscmp	14515784
dpe_abssmall	1390606
dpe_addmuluz	342913
dpe_addz	1943187
dpe_cmp	5262475
dpe_cmpmul	5262472
dpe_divz	14075273
dpe_muluz	799918
dpe_mulz	56964592
dpe_negz	244425
dpe_normalize	48108666
dpe_normalize0	108561343
dpe_submuluz	412454
dpe_submulz	51702270
dpe_subz	53733451
dperotate	652462
dpetor	94271
drop	1345994
flat	1345989
flattergram_i	2967
fplll	0
fplll_dpe	1603178
fplll_fast	2103821
fplll_flatter	625436
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44559
get_gramschmidt	1098367
gramschmidt_dynprec	2691983
gramschmidt_upper	1336
gsisinv	5192591
incrementalGSgen	168
itodbl_exp	162587712
kerint	42
kerint0	70
lll	1243327
lll_finish	2164531
lll_trivial	771729
lllall	36699
lllallgen	168
lllfp	5368134
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4093407
mulshift	318942
nbits2prec64	7486943
pari_rint	10796250
potential	1345994
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31932742
rotateG	443280
rotateG_fast	11546769
setG2_fast	17028421
setG2_heuristic	187610
setG_fast	22657351
setG_heuristic	205626
set_line	24927750
sizered	1345994
spread	5850131
submuliu2n	4200940
submuliu642n	687471
submuliu64_inplace	9632820
submulshift	1507243
submulziu	5923712
submulzu2n	262549
subzi	18525286
truncexpo	12138
u64toi	19902261
u64toineg	671548
update_alpha	11990230
vectail_inplace	2090302

Generated by: LCOV version 1.16