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 30702-bddb8d6928) Lines: 1336 1642 81.4 % Date: 2026-02-23 02:23:56 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	24
lllgramkerim	30
lllkerim	30
kerint	33
lllgen	36
lllgramgen	36
lllgramkerimgen	36
lllkerimgen	36
qflllgram	54
kerint0	57
lllint	129
incrementalGSgen	144
lllallgen	144
lllgramallgen	144
REDgen	168
do_SWAPgen	168
qflllgram0	210
qflll0	258
pslg	432
ZM_flattergram	722
ZM_flattergram_rank	722
gramschmidt_upper	1080
RgM_Cholesky_dynprec	2227
flattergram_i	2227
ZM_to_RM	3234
fplll_heuristic	3234
gc_lll	3729
lllgram	7790
truncexpo	9666
ZC_to_RC	12165
dpeM_diagonal_shallow	17110
RgM_flip	26804
lllgramint	28979
lllall	29174
get_gaussred	35916
RgM_is_square_mat	36967
dpetor	78899
setG2_heuristic	149185
realsqrdotproduct	156614
setG_heuristic	163003
dpe_negz	192158
submulzu2n	219541
addmulzu2n	228597
Babai_heuristic	232085
dpe_addmuluz	267659
mulshift	308281
absrsmall2	320494
dpe_submuluz	322869
rotateG	342817
ZM_is_knapsack	495732
dperotate	501394
ZM_flatter_rank	508045
fplll_flatter	508767
ZM_flatter	509767
absrsmall	561301
lll_trivial	615630
dpe_muluz	628297
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
get_gramschmidt	900154
realdotproduct	955354
ZM_is_lower	988125
lll	1043762
affii_or_copy_gc	1089973
dpe_abssmall	1089973
drop	1100705
flat	1100705
potential	1100705
sizered	1100705
fplll_dpe	1324815
submulshift	1471860
dpe_addz	1572292
vectail_inplace	1721991
fplll_fast	1736260
lll_finish	1785142
dbldotsquare	2057984
gramschmidt_dynprec	2201410
affdbldpe	2649630
cget_dpemat	2649630
addmuliu2n	3238832
submuliu2n	3307376
mpabscmp	3366274
ZM_is_upper	3476900
addmulziu	3485541
Babai_dpe	3780073
GS_extraprec	3859899
condition_bound	3859899
ZM2_lll_norms	4048392
dpe_cmp	4240872
dpe_cmpmul	4240872
gsisinv	4247361
lllfp	4419454
submulziu	4503770
spread	4783802
ZM_lll_norms	5940372
nbits2prec64	6110993
cget_dblmat	6945040
pari_rint	8796783
rotateG_fast	9392369
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
update_alpha	9735186
cget_dpevec	10962009
dpe_divz	11345497
dpe_abscmp	11726599
setG2_fast	13847830
addzi	14160156
subzi	14712787
affidpe	16801034
setG_fast	18475535
u64toi	19880176
set_line	20355746
affdpe	20584224
Babai_fast	24513976
rotate	25925824
dblrotate	28177107
cget_dblvec	28816124
dpe_normalize	39259531
dpe_submulz	41947471
dpe_subz	43589500
dpe_mulz	46188343
dpe_normalize0	88513866
dbldotproduct	95628377
itodbl_exp	132018179

Generated by: LCOV version 1.16