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 30673-b6380924e9) Lines: 1336 1642 81.4 % Date: 2026-02-08 09:23:25 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	20147
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244396
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412412
rotateG	443224
ZM_is_knapsack	606724
ZM_flatter_rank	624845
fplll_flatter	625805
ZM_flatter	626859
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771699
dpe_muluz	799876
get_gramschmidt	1098844
realdotproduct	1183370
ZM_is_lower	1205117
lll	1243329
potential	1347205
drop	1347207
sizered	1347207
flat	1347208
affii_or_copy_gc	1390410
dpe_abssmall	1390433
submulshift	1501323
fplll_dpe	1603493
dpe_addz	1943123
vectail_inplace	2090750
fplll_fast	2104269
lll_finish	2164882
dbldotsquare	2481570
gramschmidt_dynprec	2694413
cget_dpemat	3206965
affdbldpe	3206981
addmuliu2n	4087611
mpabscmp	4097469
submuliu2n	4178689
ZM_is_upper	4236680
addmulziu	4580770
Babai_dpe	4655226
GS_extraprec	4728005
condition_bound	4728005
ZM2_lll_norms	4848639
gsisinv	5195757
dpe_cmpmul	5263559
dpe_cmp	5263565
lllfp	5371683
spread	5853375
submulziu	5923347
ZM_lll_norms	7138135
nbits2prec64	7493194
cget_dblmat	8417079
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10771927
rotateG_fast	11518771
update_alpha	11962091
cget_dpevec	13296684
dpe_divz	14077086
dpe_abscmp	14517517
setG2_fast	16989552
addzi	17783156
subzi	18524819
u64toi	19880176
affidpe	20753345
setG_fast	22619256
set_line	24890795
affdpe	25732016
Babai_fast	30150403
rotate	31880560
dblrotate	34556308
cget_dblvec	34992250
dpe_normalize	48113318
dpe_submulz	51705359
dpe_subz	53736499
dpe_mulz	56968759
dpe_normalize0	108573244
dbldotproduct	118063449
itodbl_exp	162401575

Generated by: LCOV version 1.16