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 30759-17b423fb9b) Lines: 1336 1642 81.4 % Date: 2026-03-21 09:26:11 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656252
Babai_fast	30145723
Babai_heuristic	289747
GS_extraprec	4727015
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4847969
ZM_flatter	626842
ZM_flatter_rank	624828
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606543
ZM_is_lower	1205467
ZM_is_upper	4236544
ZM_lll_norms	7137781
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4088927
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580749
addmulzu2n	271563
addzi	17783465
affdbldpe	3207769
affdpe	25733443
affidpe	20756851
affii_or_copy_gc	1390420
cget_dblmat	8418325
cget_dblvec	34998353
cget_dpemat	3207760
cget_dpevec	13300872
condition_bound	4727015
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118034339
dbldotsquare	2482410
dblrotate	34551295
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519046
dpe_abssmall	1390430
dpe_addmuluz	342907
dpe_addz	1943123
dpe_cmp	5264549
dpe_cmpmul	5264538
dpe_divz	14078633
dpe_muluz	799875
dpe_mulz	56969211
dpe_negz	244383
dpe_normalize	48113756
dpe_normalize0	108576180
dpe_submuluz	412417
dpe_submulz	51704777
dpe_subz	53735979
dperotate	652350
dpetor	93774
drop	1346939
flat	1346941
flattergram_i	2967
fplll	0
fplll_dpe	1603887
fplll_fast	2104587
fplll_flatter	625789
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44538
get_gramschmidt	1099251
gramschmidt_dynprec	2693881
gramschmidt_upper	1336
gsisinv	5195189
incrementalGSgen	168
itodbl_exp	162345764
kerint	28
kerint0	56
lll	1243425
lll_finish	2165197
lll_trivial	771771
lllall	36699
lllallgen	168
lllfp	5371022
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096420
mulshift	317611
nbits2prec64	7492132
pari_rint	10768732
potential	1346939
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31877897
rotateG	443655
rotateG_fast	11517114
setG2_fast	16986363
setG2_heuristic	188352
setG_fast	22616948
setG_heuristic	206374
set_line	24889302
sizered	1346940
spread	5852635
submuliu2n	4175373
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499795
submulziu	5923377
submulzu2n	262549
subzi	18525121
truncexpo	12139
u64toi	19876486
u64toineg	668118
update_alpha	11960856
vectail_inplace	2091036

Generated by: LCOV version 1.16