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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 81.2 % 1645 1336 Test Date: 2026-09-06 17:02:10 Functions: 96.2 % 131 126 Legend: Lines:     hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4767968
Babai_fast	31686172
Babai_heuristic	302144
GS_extraprec	4729435
REDgen	196
RgM_Cholesky_dynprec	2988
RgM_flip	34953
RgM_flop	0
RgM_is_square_mat	45834
ZC_to_RC	22443
ZM2_lll_norms	4851465
ZM_flatter	627283
ZM_flatter_rank	625269
ZM_flattergram	968
ZM_flattergram_rank	968
ZM_is_knapsack	607679
ZM_is_lower	1205663
ZM_is_upper	4239846
ZM_lll_norms	7144518
ZM_to_RM	4706
absrsmall	761889
absrsmall2	442325
addmuliu2n	4668302
addmuliu642n	729530
addmuliu64_inplace	10613593
addmulziu	10826608
addmulzu2n	17070592
addzi	32506340
affdbldpe	3210624
affdpe	33169325
affidpe	22441403
affii_or_copy_gc	2183624
cget_dblmat	8430652
cget_dblvec	35114314
cget_dpemat	3210624
cget_dpevec	13318290
condition_bound	4729435
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	129241240
dbldotsquare	2485186
dblrotate	35887647
do_SWAPgen	196
dpeM_diagonal_shallow	1736
dpe_abscmp	15813752
dpe_abssmall	2183624
dpe_addmuluz	1345057
dpe_addz	6685227
dpe_cmp	5480058
dpe_cmpmul	5480058
dpe_divz	15650077
dpe_muluz	8704419
dpe_mulz	75179344
dpe_negz	366779
dpe_normalize	77498596
dpe_normalize0	153391359
dpe_submuluz	1433659
dpe_submulz	69699286
dpe_subz	76425091
dperotate	718524
dpetor	26670
drop	1347906
flat	1347906
flattergram_i	2988
fplll	0
fplll_dpe	1605312
fplll_fast	2107663
fplll_flatter	626237
fplll_heuristic	4706
gc_lll	5460
get_cholesky	44547
get_gramschmidt	1099698
gramschmidt_dynprec	2695812
gramschmidt_upper	1402
incrementalGSgen	168
itodbl_exp	177119904
kerint	28
kerint0	56
lll	1244995
lll_finish	2168303
lll_trivial	771857
lllall	36701
lllallgen	168
lllfp	5375972
lllgen	42
lllgram	9093
lllgramallgen	168
lllgramgen	42
lllgramint	36441
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4109737
mulshift	938305
nbits2prec64	7496928
pari_rint	11658117
potential	1347906
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1289785
realsqrdotproduct	207826
rotate	33263806
rotateG	479947
rotateG_fast	11962549
setG2_fast	17617870
setG2_heuristic	195115
setG_fast	23272825
setG_heuristic	217970
set_line	25552829
sizered	1347906
spread	5856255
submuliu2n	4743375
submuliu642n	747684
submuliu64_inplace	10666126
submulshift	2074362
submulziu	12229399
submulzu2n	16867897
subzi	33271522
thre	1033950
thsn	92870
truncexpo	24469
u64toi	22027403
u64toineg	729530
update_alpha	12442496
vectail_inplace	2093684

Generated by: LCOV version 2.0-1