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
Babai_dpe	4656302
Babai_fast	30145648
Babai_heuristic	288770
GS_extraprec	4727284
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848128
ZM_flatter	626861
ZM_flatter_rank	624847
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606579
ZM_is_lower	1205489
ZM_is_upper	4236728
ZM_lll_norms	7137962
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4089966
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580751
addmulzu2n	271563
addzi	17782961
affdbldpe	3207792
affdpe	25733345
affidpe	20756752
affii_or_copy_gc	1390396
cget_dblmat	8418505
cget_dblvec	34998178
cget_dpemat	3207785
cget_dpevec	13300916
condition_bound	4727287
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118034140
dbldotsquare	2482390
dblrotate	34551104
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519040
dpe_abssmall	1390415
dpe_addmuluz	342906
dpe_addz	1943118
dpe_cmp	5264583
dpe_cmpmul	5264578
dpe_divz	14078606
dpe_muluz	799876
dpe_mulz	56968374
dpe_negz	244400
dpe_normalize	48112844
dpe_normalize0	108574023
dpe_submuluz	412418
dpe_submulz	51703990
dpe_subz	53735051
dperotate	652348
dpetor	93772
drop	1347028
flat	1347028
flattergram_i	2967
fplll	0
fplll_dpe	1603898
fplll_fast	2104631
fplll_flatter	625807
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1099272
gramschmidt_dynprec	2694056
gramschmidt_upper	1336
gsisinv	5195458
incrementalGSgen	168
itodbl_exp	162329824
kerint	28
kerint0	56
lll	1243426
lll_finish	2165236
lll_trivial	771773
lllall	36699
lllallgen	168
lllfp	5371284
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096586
mulshift	317610
nbits2prec64	7492547
pari_rint	10768563
potential	1347027
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31875623
rotateG	443223
rotateG_fast	11517058
setG2_fast	16986207
setG2_heuristic	187610
setG_fast	22616820
setG_heuristic	205626
set_line	24887977
sizered	1347028
spread	5852936
submuliu2n	4177761
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923258
submulzu2n	262549
subzi	18524461
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11960389
vectail_inplace	2091072

Generated by: LCOV version 1.16