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 30587-f85873d515) Lines: 1336 1642 81.4 % Date: 2025-12-28 09:21:53 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	20147
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93799
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244392
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342911
absrsmall2	401466
dpe_submuluz	412412
rotateG	443224
ZM_is_knapsack	606585
ZM_flatter_rank	624836
fplll_flatter	625797
ZM_flatter	626850
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771685
dpe_muluz	799874
get_gramschmidt	1098825
realdotproduct	1183370
ZM_is_lower	1205099
lll	1243315
drop	1347170
flat	1347172
potential	1347172
sizered	1347173
affii_or_copy_gc	1390431
dpe_abssmall	1390434
submulshift	1501323
fplll_dpe	1603399
dpe_addz	1943126
vectail_inplace	2090524
fplll_fast	2104046
lll_finish	2164651
dbldotsquare	2481277
gramschmidt_dynprec	2694344
cget_dpemat	3206798
affdbldpe	3206799
addmuliu2n	4089278
mpabscmp	4097041
submuliu2n	4181332
ZM_is_upper	4236525
addmulziu	4580812
Babai_dpe	4655114
GS_extraprec	4727969
condition_bound	4727969
ZM2_lll_norms	4847507
gsisinv	5195713
dpe_cmpmul	5263459
dpe_cmp	5263460
lllfp	5371557
spread	5853198
submulziu	5923342
ZM_lll_norms	7136804
nbits2prec64	7493048
cget_dblmat	8416168
addmuliu64_inplace	9572959
submuliu64_inplace	9623916
pari_rint	10776289
rotateG_fast	11523170
update_alpha	11966473
cget_dpevec	13296048
dpe_divz	14076785
dpe_abscmp	14517210
setG2_fast	16992789
addzi	17783468
subzi	18525047
u64toi	19881520
affidpe	20752782
setG_fast	22621613
set_line	24892254
affdpe	25731717
Babai_fast	30152333
rotate	31887472
dblrotate	34569344
cget_dblvec	34987681
dpe_normalize	48112205
dpe_submulz	51704402
dpe_subz	53735534
dpe_mulz	56967745
dpe_normalize0	108570934
dbldotproduct	118058233
itodbl_exp	162370344

Generated by: LCOV version 1.16