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 30572-91e0396466) Lines: 1336 1642 81.4 % Date: 2025-12-12 09:22:23 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	4244
fplll_heuristic	4244
gc_lll	4833
lllgram	9089
truncexpo	12138
ZC_to_RC	15945
dpeM_diagonal_shallow	20294
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44560
RgM_is_square_mat	45828
dpetor	94283
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244434
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412448
rotateG	443280
ZM_is_knapsack	606735
ZM_flatter_rank	624935
fplll_flatter	625896
ZM_flatter	626949
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771748
dpe_muluz	799915
get_gramschmidt	1099045
realdotproduct	1183370
ZM_is_lower	1205216
lll	1243390
flat	1347354
potential	1347355
drop	1347356
sizered	1347356
affii_or_copy_gc	1390595
dpe_abssmall	1390604
submulshift	1507243
fplll_dpe	1603880
dpe_addz	1943191
vectail_inplace	2091132
fplll_fast	2104679
lll_finish	2165387
dbldotsquare	2481975
gramschmidt_dynprec	2694710
affdbldpe	3207752
cget_dpemat	3207758
mpabscmp	4097765
addmuliu2n	4104694
submuliu2n	4197013
ZM_is_upper	4237281
addmulziu	4580838
Babai_dpe	4656319
GS_extraprec	4728243
condition_bound	4728243
ZM2_lll_norms	4848105
gsisinv	5196096
dpe_cmp	5264502
dpe_cmpmul	5264503
lllfp	5372308
spread	5853750
submulziu	5923718
ZM_lll_norms	7138126
nbits2prec64	7493942
cget_dblmat	8418699
addmuliu64_inplace	9582880
submuliu64_inplace	9633716
pari_rint	10798777
rotateG_fast	11548820
update_alpha	11992232
cget_dpevec	13299808
dpe_divz	14079509
dpe_abscmp	14520010
setG2_fast	17031727
addzi	17783897
subzi	18525278
u64toi	19904067
affidpe	20757257
setG_fast	22663420
set_line	24934844
affdpe	25735782
Babai_fast	30207861
rotate	31938651
dblrotate	34646396
cget_dblvec	34997630
dpe_normalize	48117535
dpe_submulz	51709956
dpe_subz	53741107
dpe_mulz	56974301
dpe_normalize0	108583853
dbldotproduct	118245733
itodbl_exp	162626335

Generated by: LCOV version 1.16