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 30568-0d72d66ef5) Lines: 1335 1641 81.4 % Date: 2025-12-01 09:22:22 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	20294
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44559
RgM_is_square_mat	45828
dpetor	94285
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244418
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	318943
dpe_addmuluz	342913
absrsmall2	402705
dpe_submuluz	412454
rotateG	443711
ZM_is_knapsack	606578
ZM_flatter_rank	624925
fplll_flatter	625886
ZM_flatter	626939
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	698128
lll_trivial	771753
dpe_muluz	799917
get_gramschmidt	1099024
realdotproduct	1186355
ZM_is_lower	1205192
lll	1243391
drop	1347306
flat	1347309
potential	1347309
sizered	1347309
affii_or_copy_gc	1390569
dpe_abssmall	1390601
submulshift	1507251
fplll_dpe	1603855
dpe_addz	1943183
vectail_inplace	2090950
fplll_fast	2104499
lll_finish	2165205
dbldotsquare	2481883
gramschmidt_dynprec	2694616
affdbldpe	3207707
cget_dpemat	3207711
mpabscmp	4097058
addmuliu2n	4105745
submuliu2n	4200075
ZM_is_upper	4237152
addmulziu	4580849
Babai_dpe	4656175
GS_extraprec	4728130
condition_bound	4728131
ZM2_lll_norms	4848012
gsisinv	5195968
dpe_cmp	5264350
dpe_cmpmul	5264352
lllfp	5372170
spread	5853471
submulziu	5923698
ZM_lll_norms	7137839
nbits2prec64	7493683
cget_dblmat	8417983
addmuliu64_inplace	9582880
submuliu64_inplace	9633716
pari_rint	10796522
rotateG_fast	11545447
update_alpha	11989294
cget_dpevec	13299614
dpe_divz	14078737
dpe_abscmp	14519197
setG2_fast	17026178
addzi	17783675
subzi	18525233
u64toi	19904067
affidpe	20756347
setG_fast	22656747
set_line	24928105
affdpe	25734928
Babai_fast	30198869
rotate	31930682
dblrotate	34636283
cget_dblvec	34992410
dpe_normalize	48113616
dpe_submulz	51706019
dpe_subz	53737160
dpe_mulz	56970190
dpe_normalize0	108575093
dbldotproduct	118211427
itodbl_exp	162594795

Generated by: LCOV version 1.16