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
Babai_dpe	4656175
Babai_fast	30198869
Babai_heuristic	289747
GS_extraprec	4728130
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4848012
ZM_flatter	626939
ZM_flatter_rank	624925
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606578
ZM_is_lower	1205192
ZM_is_upper	4237152
ZM_lll_norms	7137839
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4105745
addmuliu642n	671548
addmuliu64_inplace	9582880
addmulziu	4580849
addmulzu2n	271563
addzi	17783675
affdbldpe	3207707
affdpe	25734928
affidpe	20756347
affii_or_copy_gc	1390569
cget_dblmat	8417983
cget_dblvec	34992410
cget_dpemat	3207711
cget_dpevec	13299614
condition_bound	4728131
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118211427
dbldotsquare	2481883
dblrotate	34636283
do_SWAPgen	196
dpeM_diagonal_shallow	20294
dpe_abscmp	14519197
dpe_abssmall	1390601
dpe_addmuluz	342913
dpe_addz	1943183
dpe_cmp	5264350
dpe_cmpmul	5264352
dpe_divz	14078737
dpe_muluz	799917
dpe_mulz	56970190
dpe_negz	244418
dpe_normalize	48113616
dpe_normalize0	108575093
dpe_submuluz	412454
dpe_submulz	51706019
dpe_subz	53737160
dperotate	652462
dpetor	94285
drop	1347306
flat	1347309
flattergram_i	2967
fplll	0
fplll_dpe	1603855
fplll_fast	2104499
fplll_flatter	625886
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44559
get_gramschmidt	1099024
gramschmidt_dynprec	2694616
gramschmidt_upper	1336
gsisinv	5195968
incrementalGSgen	168
itodbl_exp	162594795
kerint	42
kerint0	70
lll	1243391
lll_finish	2165205
lll_trivial	771753
lllall	36699
lllallgen	168
lllfp	5372170
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097058
mulshift	318943
nbits2prec64	7493683
pari_rint	10796522
potential	1347309
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31930682
rotateG	443711
rotateG_fast	11545447
setG2_fast	17026178
setG2_heuristic	188352
setG_fast	22656747
setG_heuristic	206374
set_line	24928105
sizered	1347309
spread	5853471
submuliu2n	4200075
submuliu642n	687471
submuliu64_inplace	9633716
submulshift	1507251
submulziu	5923698
submulzu2n	262549
subzi	18525233
truncexpo	12139
u64toi	19904067
u64toineg	671548
update_alpha	11989294
vectail_inplace	2090950

Generated by: LCOV version 1.16