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 30660-09c6d0ed2e) Lines: 1336 1642 81.4 % Date: 2026-02-01 09:23:44 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	20146
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44538
RgM_is_square_mat	45828
dpetor	93800
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244384
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342912
absrsmall2	401466
dpe_submuluz	412411
rotateG	443224
ZM_is_knapsack	606415
ZM_flatter_rank	624840
fplll_flatter	625801
ZM_flatter	626854
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771706
dpe_muluz	799874
get_gramschmidt	1098852
realdotproduct	1183370
ZM_is_lower	1205124
lll	1243329
drop	1347196
sizered	1347196
flat	1347197
potential	1347197
affii_or_copy_gc	1390417
dpe_abssmall	1390433
submulshift	1501323
fplll_dpe	1603499
dpe_addz	1943127
vectail_inplace	2090448
fplll_fast	2103952
lll_finish	2164570
dbldotsquare	2481312
gramschmidt_dynprec	2694392
affdbldpe	3206985
cget_dpemat	3206986
addmuliu2n	4088018
mpabscmp	4097027
submuliu2n	4178919
ZM_is_upper	4236669
addmulziu	4580797
Babai_dpe	4655184
GS_extraprec	4727945
condition_bound	4727945
ZM2_lll_norms	4849002
gsisinv	5195705
dpe_cmpmul	5263521
dpe_cmp	5263527
lllfp	5371644
spread	5853022
submulziu	5923301
ZM_lll_norms	7138201
nbits2prec64	7493128
cget_dblmat	8415838
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10769309
rotateG_fast	11516548
update_alpha	11959849
cget_dpevec	13296603
dpe_divz	14076780
dpe_abscmp	14517185
setG2_fast	16986181
addzi	17783422
subzi	18525001
u64toi	19880176
affidpe	20753029
setG_fast	22615235
set_line	24886499
affdpe	25731782
Babai_fast	30145376
rotate	31873874
dblrotate	34549646
cget_dblvec	34986668
dpe_normalize	48112213
dpe_submulz	51704364
dpe_subz	53735482
dpe_mulz	56967797
dpe_normalize0	108571023
dbldotproduct	118049205
itodbl_exp	162399554

Generated by: LCOV version 1.16