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 30613-2b070936c6) Lines: 1336 1642 81.4 % Date: 2026-01-15 09:21:54 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	44537
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244380
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412412
rotateG	443223
ZM_is_knapsack	606404
ZM_flatter_rank	624841
fplll_flatter	625801
ZM_flatter	626855
dperotate	652348
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771699
dpe_muluz	799875
get_gramschmidt	1098833
realdotproduct	1183370
ZM_is_lower	1205105
lll	1243328
drop	1347202
potential	1347202
flat	1347203
sizered	1347203
affii_or_copy_gc	1390395
dpe_abssmall	1390418
submulshift	1501323
fplll_dpe	1603483
dpe_addz	1943126
vectail_inplace	2090431
fplll_fast	2103941
lll_finish	2164561
dbldotsquare	2481396
gramschmidt_dynprec	2694405
affdbldpe	3206957
cget_dpemat	3206962
addmuliu2n	4085746
mpabscmp	4096818
submuliu2n	4177102
ZM_is_upper	4236663
addmulziu	4580769
Babai_dpe	4655101
condition_bound	4728030
GS_extraprec	4728031
ZM2_lll_norms	4848964
gsisinv	5195774
dpe_cmpmul	5263440
dpe_cmp	5263453
lllfp	5371667
spread	5853072
submulziu	5923244
ZM_lll_norms	7138111
nbits2prec64	7493184
cget_dblmat	8415740
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10768942
rotateG_fast	11514562
update_alpha	11957863
cget_dpevec	13296606
dpe_divz	14076243
dpe_abscmp	14516718
setG2_fast	16982899
addzi	17782942
subzi	18524520
u64toi	19880176
affidpe	20752458
setG_fast	22611533
set_line	24882207
affdpe	25731070
Babai_fast	30139932
rotate	31867879
dblrotate	34543616
cget_dblvec	34985217
dpe_normalize	48109452
dpe_submulz	51701306
dpe_subz	53732462
dpe_mulz	56964616
dpe_normalize0	108564533
dbldotproduct	118023275
itodbl_exp	162338773

Generated by: LCOV version 1.16