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
Babai_dpe	4655226
Babai_fast	30150403
Babai_heuristic	288770
GS_extraprec	4728005
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848639
ZM_flatter	626859
ZM_flatter_rank	624845
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606724
ZM_is_lower	1205117
ZM_is_upper	4236680
ZM_lll_norms	7138135
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4087611
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580770
addmulzu2n	271563
addzi	17783156
affdbldpe	3206981
affdpe	25732016
affidpe	20753345
affii_or_copy_gc	1390410
cget_dblmat	8417079
cget_dblvec	34992250
cget_dpemat	3206965
cget_dpevec	13296684
condition_bound	4728005
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118063449
dbldotsquare	2481570
dblrotate	34556308
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14517517
dpe_abssmall	1390433
dpe_addmuluz	342913
dpe_addz	1943123
dpe_cmp	5263565
dpe_cmpmul	5263559
dpe_divz	14077086
dpe_muluz	799876
dpe_mulz	56968759
dpe_negz	244396
dpe_normalize	48113318
dpe_normalize0	108573244
dpe_submuluz	412412
dpe_submulz	51705359
dpe_subz	53736499
dperotate	652350
dpetor	93802
drop	1347207
flat	1347208
flattergram_i	2967
fplll	0
fplll_dpe	1603493
fplll_fast	2104269
fplll_flatter	625805
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1098844
gramschmidt_dynprec	2694413
gramschmidt_upper	1336
gsisinv	5195757
incrementalGSgen	168
itodbl_exp	162401575
kerint	42
kerint0	70
lll	1243329
lll_finish	2164882
lll_trivial	771699
lllall	36699
lllallgen	168
lllfp	5371683
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097469
mulshift	317717
nbits2prec64	7493194
pari_rint	10771927
potential	1347205
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31880560
rotateG	443224
rotateG_fast	11518771
setG2_fast	16989552
setG2_heuristic	187610
setG_fast	22619256
setG_heuristic	205626
set_line	24890795
sizered	1347207
spread	5853375
submuliu2n	4178689
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923347
submulzu2n	262549
subzi	18524819
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11962091
vectail_inplace	2090750

Generated by: LCOV version 1.16