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: 2026-03-10 09:24:00 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	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244383
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412418
rotateG	443224
ZM_is_knapsack	606688
ZM_flatter_rank	624841
fplll_flatter	625802
ZM_flatter	626855
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771772
dpe_muluz	799876
get_gramschmidt	1099280
realdotproduct	1183370
ZM_is_lower	1205504
lll	1243426
flat	1347025
drop	1347027
potential	1347027
sizered	1347027
affii_or_copy_gc	1390417
dpe_abssmall	1390424
submulshift	1499787
fplll_dpe	1603924
dpe_addz	1943114
vectail_inplace	2091200
fplll_fast	2104753
lll_finish	2165378
dbldotsquare	2482791
gramschmidt_dynprec	2694051
affdbldpe	3207827
cget_dpemat	3207842
addmuliu2n	4086374
mpabscmp	4096655
submuliu2n	4173264
ZM_is_upper	4236747
addmulziu	4580746
Babai_dpe	4656323
condition_bound	4727308
GS_extraprec	4727309
ZM2_lll_norms	4847975
gsisinv	5195496
dpe_cmpmul	5264620
dpe_cmp	5264624
lllfp	5371281
spread	5853080
submulziu	5923342
ZM_lll_norms	7137988
nbits2prec64	7492549
cget_dblmat	8419027
addmuliu64_inplace	9567325
submuliu64_inplace	9625851
pari_rint	10769843
rotateG_fast	11516706
update_alpha	11960051
cget_dpevec	13301583
dpe_divz	14078588
dpe_abscmp	14519011
setG2_fast	16985622
addzi	17783123
subzi	18524768
u64toi	19876621
affidpe	20757129
setG_fast	22616720
set_line	24888720
affdpe	25733375
Babai_fast	30144723
rotate	31874562
dblrotate	34550089
cget_dblvec	35001015
dpe_normalize	48112048
dpe_submulz	51703080
dpe_subz	53734124
dpe_mulz	56967548
dpe_normalize0	108572640
dbldotproduct	118024923
itodbl_exp	162325811

Generated by: LCOV version 1.16