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 30735-65f72320ad) Lines: 1336 1642 81.4 % Date: 2026-03-08 09:23:56 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656346
Babai_fast	30150007
Babai_heuristic	288770
GS_extraprec	4727266
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848050
ZM_flatter	626856
ZM_flatter_rank	624842
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606701
ZM_is_lower	1205503
ZM_is_upper	4236775
ZM_lll_norms	7138064
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4085978
addmuliu642n	668118
addmuliu64_inplace	9567325
addmulziu	4580763
addmulzu2n	271563
addzi	17783385
affdbldpe	3207828
affdpe	25733885
affidpe	20757433
affii_or_copy_gc	1390410
cget_dblmat	8419064
cget_dblvec	35002883
cget_dpemat	3207831
cget_dpevec	13301368
condition_bound	4727266
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118048789
dbldotsquare	2482666
dblrotate	34555719
do_SWAPgen	196
dpeM_diagonal_shallow	20139
dpe_abscmp	14519440
dpe_abssmall	1390431
dpe_addmuluz	342907
dpe_addz	1943116
dpe_cmp	5264657
dpe_cmpmul	5264650
dpe_divz	14079014
dpe_muluz	799876
dpe_mulz	56970822
dpe_negz	244382
dpe_normalize	48115090
dpe_normalize0	108579200
dpe_submuluz	412418
dpe_submulz	51706261
dpe_subz	53737364
dperotate	652350
dpetor	93772
drop	1347038
flat	1347042
flattergram_i	2967
fplll	0
fplll_dpe	1603917
fplll_fast	2104770
fplll_flatter	625803
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099279
gramschmidt_dynprec	2694083
gramschmidt_upper	1336
gsisinv	5195451
incrementalGSgen	168
itodbl_exp	162371105
kerint	42
kerint0	70
lll	1243426
lll_finish	2165381
lll_trivial	771773
lllall	36699
lllallgen	168
lllfp	5371325
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097054
mulshift	317610
nbits2prec64	7492610
pari_rint	10770426
potential	1347041
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31880146
rotateG	443224
rotateG_fast	11518580
setG2_fast	16988962
setG2_heuristic	187610
setG_fast	22620683
setG_heuristic	205626
set_line	24892936
sizered	1347042
spread	5853055
submuliu2n	4170867
submuliu642n	683445
submuliu64_inplace	9625851
submulshift	1499787
submulziu	5923372
submulzu2n	262549
subzi	18525047
truncexpo	12138
u64toi	19876621
u64toineg	668118
update_alpha	11961878
vectail_inplace	2091203

Generated by: LCOV version 1.16