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 30773-2078653b96) Lines: 1336 1642 81.4 % Date: 2026-04-04 09:27:12 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
kerint	28
matkerint0	28
lllgramkerim	35
lllkerim	35
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
kerint0	56
qflllgram	63
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	44538
RgM_is_square_mat	45828
dpetor	93772
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244400
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342906
absrsmall2	401466
dpe_submuluz	412418
rotateG	443223
ZM_is_knapsack	606579
ZM_flatter_rank	624847
fplll_flatter	625807
ZM_flatter	626861
dperotate	652348
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771773
dpe_muluz	799876
get_gramschmidt	1099272
realdotproduct	1183370
ZM_is_lower	1205489
lll	1243426
potential	1347027
drop	1347028
flat	1347028
sizered	1347028
affii_or_copy_gc	1390396
dpe_abssmall	1390415
submulshift	1499787
fplll_dpe	1603898
dpe_addz	1943118
vectail_inplace	2091072
fplll_fast	2104631
lll_finish	2165236
dbldotsquare	2482390
gramschmidt_dynprec	2694056
cget_dpemat	3207785
affdbldpe	3207792
addmuliu2n	4089966
mpabscmp	4096586
submuliu2n	4177761
ZM_is_upper	4236728
addmulziu	4580751
Babai_dpe	4656302
GS_extraprec	4727284
condition_bound	4727287
ZM2_lll_norms	4848128
gsisinv	5195458
dpe_cmpmul	5264578
dpe_cmp	5264583
lllfp	5371284
spread	5852936
submulziu	5923258
ZM_lll_norms	7137962
nbits2prec64	7492547
cget_dblmat	8418505
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10768563
rotateG_fast	11517058
update_alpha	11960389
cget_dpevec	13300916
dpe_divz	14078606
dpe_abscmp	14519040
setG2_fast	16986207
addzi	17782961
subzi	18524461
u64toi	19876486
affidpe	20756752
setG_fast	22616820
set_line	24887977
affdpe	25733345
Babai_fast	30145648
rotate	31875623
dblrotate	34551104
cget_dblvec	34998178
dpe_normalize	48112844
dpe_submulz	51703990
dpe_subz	53735051
dpe_mulz	56968374
dpe_normalize0	108574023
dbldotproduct	118034140
itodbl_exp	162329824

Generated by: LCOV version 1.16