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 30735-65f72320ad) Lines: 1336 1642 81.4 % Date: 2026-03-09 09:24:55 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	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244381
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412418
rotateG	443224
ZM_is_knapsack	606583
ZM_flatter_rank	624824
fplll_flatter	625784
ZM_flatter	626838
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771773
dpe_muluz	799876
get_gramschmidt	1099272
realdotproduct	1183370
ZM_is_lower	1205499
lll	1243426
flat	1346925
drop	1346926
potential	1346927
sizered	1346928
affii_or_copy_gc	1390415
dpe_abssmall	1390435
submulshift	1499787
fplll_dpe	1603916
dpe_addz	1943123
vectail_inplace	2091082
fplll_fast	2104653
lll_finish	2165258
dbldotsquare	2482401
gramschmidt_dynprec	2693850
cget_dpemat	3207808
affdbldpe	3207831
addmuliu2n	4085928
mpabscmp	4096565
submuliu2n	4170858
ZM_is_upper	4236538
addmulziu	4580743
Babai_dpe	4656309
GS_extraprec	4727022
condition_bound	4727022
ZM2_lll_norms	4847831
gsisinv	5195220
dpe_cmpmul	5264586
dpe_cmp	5264598
lllfp	5370985
spread	5852702
submulziu	5923392
ZM_lll_norms	7137732
nbits2prec64	7492102
cget_dblmat	8418605
addmuliu64_inplace	9567325
submuliu64_inplace	9625851
pari_rint	10769583
rotateG_fast	11517974
update_alpha	11961286
cget_dpevec	13301053
dpe_divz	14078826
dpe_abscmp	14519253
setG2_fast	16987941
addzi	17783306
subzi	18524990
u64toi	19876621
affidpe	20757050
setG_fast	22619142
set_line	24891198
affdpe	25733749
Babai_fast	30148455
rotate	31878317
dblrotate	34553902
cget_dblvec	35000172
dpe_normalize	48114304
dpe_submulz	51705455
dpe_subz	53736617
dpe_mulz	56969985
dpe_normalize0	108577330
dbldotproduct	118043538
itodbl_exp	162361280

Generated by: LCOV version 1.16