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 30582-6e9af8ee1d) Lines: 1336 1642 81.4 % Date: 2025-12-20 09:23:49 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	4246
fplll_heuristic	4246
gc_lll	4835
lllgram	9089
truncexpo	12139
ZC_to_RC	15952
dpeM_diagonal_shallow	20279
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44580
RgM_is_square_mat	45828
dpetor	94227
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244440
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	318483
dpe_addmuluz	342913
absrsmall2	402705
dpe_submuluz	412461
rotateG	443738
ZM_is_knapsack	606780
ZM_flatter_rank	624950
fplll_flatter	625911
ZM_flatter	626964
dperotate	652516
addmuliu642n	670410
u64toineg	670410
submuliu642n	686221
absrsmall	698128
lll_trivial	771727
dpe_muluz	799925
get_gramschmidt	1098980
realdotproduct	1186355
ZM_is_lower	1205149
lll	1243356
drop	1347419
potential	1347419
flat	1347420
sizered	1347420
affii_or_copy_gc	1390712
dpe_abssmall	1390725
submulshift	1504863
fplll_dpe	1603820
dpe_addz	1943206
vectail_inplace	2091129
fplll_fast	2104627
lll_finish	2165369
dbldotsquare	2481785
gramschmidt_dynprec	2694839
affdbldpe	3207635
cget_dpemat	3207637
addmuliu2n	4097894
mpabscmp	4098094
submuliu2n	4187338
ZM_is_upper	4237314
addmulziu	4580855
Babai_dpe	4656276
GS_extraprec	4728436
condition_bound	4728436
ZM2_lll_norms	4848157
gsisinv	5196221
dpe_cmpmul	5264454
dpe_cmp	5264459
lllfp	5372456
spread	5853941
submulziu	5923862
ZM_lll_norms	7138151
nbits2prec64	7494187
cget_dblmat	8418495
addmuliu64_inplace	9578590
submuliu64_inplace	9629660
pari_rint	10787449
rotateG_fast	11537118
update_alpha	11980996
cget_dpevec	13299071
dpe_divz	14079737
dpe_abscmp	14520212
setG2_fast	17014164
addzi	17784076
subzi	18525583
u64toi	19894471
affidpe	20757185
setG_fast	22645166
set_line	24916443
affdpe	25736543
Babai_fast	30184890
rotate	31917134
dblrotate	34611240
cget_dblvec	34997090
dpe_normalize	48117807
dpe_submulz	51710785
dpe_subz	53742015
dpe_mulz	56975107
dpe_normalize0	108584200
dbldotproduct	118165695
itodbl_exp	162516332

Generated by: LCOV version 1.16