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 30605-980f9eb85c) Lines: 1336 1642 81.4 % Date: 2026-01-12 09:21:57 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	44536
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244382
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342911
absrsmall2	401466
dpe_submuluz	412412
rotateG	443224
ZM_is_knapsack	606268
ZM_flatter_rank	624814
fplll_flatter	625775
ZM_flatter	626828
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771702
dpe_muluz	799872
get_gramschmidt	1098820
realdotproduct	1183370
ZM_is_lower	1205087
lll	1243327
drop	1347063
flat	1347063
potential	1347063
sizered	1347063
affii_or_copy_gc	1390410
dpe_abssmall	1390419
submulshift	1501323
fplll_dpe	1603466
dpe_addz	1943120
vectail_inplace	2090261
fplll_fast	2103787
lll_finish	2164387
dbldotsquare	2480855
gramschmidt_dynprec	2694125
cget_dpemat	3206918
affdbldpe	3206930
addmuliu2n	4089189
mpabscmp	4096292
submuliu2n	4181323
ZM_is_upper	4236361
addmulziu	4580758
Babai_dpe	4655043
GS_extraprec	4727588
condition_bound	4727588
ZM2_lll_norms	4848617
gsisinv	5195339
dpe_cmpmul	5263366
dpe_cmp	5263376
lllfp	5371236
spread	5852508
submulziu	5923201
ZM_lll_norms	7137622
nbits2prec64	7492495
cget_dblmat	8415130
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10767064
rotateG_fast	11514373
update_alpha	11957742
cget_dpevec	13295709
dpe_divz	14076284
dpe_abscmp	14516722
setG2_fast	16982786
addzi	17783011
subzi	18524584
u64toi	19880176
affidpe	20752083
setG_fast	22610433
set_line	24880624
affdpe	25731143
Babai_fast	30139863
rotate	31867435
dblrotate	34543056
cget_dblvec	34981361
dpe_normalize	48110681
dpe_submulz	51702685
dpe_subz	53733807
dpe_mulz	56965906
dpe_normalize0	108567080
dbldotproduct	118026913
itodbl_exp	162310621

Generated by: LCOV version 1.16