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 30674-be81ecfdd4) Lines: 1336 1642 81.4 % Date: 2026-02-12 09:23:52 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	4246
fplll_heuristic	4246
gc_lll	4835
lllgram	9089
truncexpo	12139
ZC_to_RC	15952
dpeM_diagonal_shallow	20147
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44536
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244361
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	317718
dpe_addmuluz	342913
absrsmall2	402705
dpe_submuluz	412411
rotateG	443655
ZM_is_knapsack	606299
ZM_flatter_rank	624792
fplll_flatter	625753
ZM_flatter	626806
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	698128
lll_trivial	771699
dpe_muluz	799872
get_gramschmidt	1098789
realdotproduct	1186355
ZM_is_lower	1205060
lll	1243328
drop	1346958
potential	1346959
flat	1346960
sizered	1346960
affii_or_copy_gc	1390409
dpe_abssmall	1390418
submulshift	1501331
fplll_dpe	1603431
dpe_addz	1943120
vectail_inplace	2090270
fplll_fast	2103787
lll_finish	2164394
dbldotsquare	2481147
gramschmidt_dynprec	2693917
cget_dpemat	3206854
affdbldpe	3206859
addmuliu2n	4086689
mpabscmp	4095949
submuliu2n	4178178
ZM_is_upper	4236130
addmulziu	4580722
Babai_dpe	4654910
GS_extraprec	4727335
condition_bound	4727335
ZM2_lll_norms	4848314
gsisinv	5195085
dpe_cmpmul	5263264
dpe_cmp	5263268
lllfp	5370934
spread	5852282
submulziu	5923043
ZM_lll_norms	7137337
nbits2prec64	7491984
cget_dblmat	8415048
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10767634
rotateG_fast	11513280
update_alpha	11956995
cget_dpevec	13295901
dpe_divz	14075817
dpe_abscmp	14516265
setG2_fast	16981193
addzi	17783076
subzi	18524547
u64toi	19880176
affidpe	20751814
setG_fast	22609311
set_line	24880376
affdpe	25730609
Babai_fast	30136774
rotate	31866205
dblrotate	34539811
cget_dblvec	34981891
dpe_normalize	48108636
dpe_submulz	51700682
dpe_subz	53731778
dpe_mulz	56963804
dpe_normalize0	108562642
dbldotproduct	118015479
itodbl_exp	162350923

Generated by: LCOV version 1.16