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 30603-c72b2decfc) Lines: 1336 1642 81.4 % Date: 2026-01-07 09:21:48 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	44538
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244392
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412412
rotateG	443224
ZM_is_knapsack	606249
ZM_flatter_rank	624808
fplll_flatter	625769
ZM_flatter	626822
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771709
dpe_muluz	799876
get_gramschmidt	1098811
realdotproduct	1183370
ZM_is_lower	1205087
lll	1243328
drop	1346996
flat	1346996
potential	1346997
sizered	1346997
dpe_abssmall	1390419
affii_or_copy_gc	1390424
submulshift	1501323
fplll_dpe	1603447
dpe_addz	1943123
vectail_inplace	2090235
fplll_fast	2103757
lll_finish	2164366
dbldotsquare	2481057
gramschmidt_dynprec	2693992
cget_dpemat	3206894
affdbldpe	3206896
addmuliu2n	4090153
mpabscmp	4096063
submuliu2n	4182610
ZM_is_upper	4236231
addmulziu	4580756
Babai_dpe	4655046
GS_extraprec	4727412
condition_bound	4727412
ZM2_lll_norms	4848520
gsisinv	5195166
dpe_cmpmul	5263387
dpe_cmp	5263393
lllfp	5371039
spread	5852312
submulziu	5923277
ZM_lll_norms	7137502
nbits2prec64	7492163
cget_dblmat	8414997
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10767323
rotateG_fast	11514932
update_alpha	11958214
cget_dpevec	13296056
dpe_divz	14076332
dpe_abscmp	14516789
setG2_fast	16983474
addzi	17783197
subzi	18524894
u64toi	19880176
affidpe	20752353
setG_fast	22611552
set_line	24882417
affdpe	25731197
Babai_fast	30140989
rotate	31869008
dblrotate	34544723
cget_dblvec	34981858
dpe_normalize	48110950
dpe_submulz	51702977
dpe_subz	53734076
dpe_mulz	56966243
dpe_normalize0	108567847
dbldotproduct	118035621
itodbl_exp	162367033

Generated by: LCOV version 1.16