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 31057-89c4d54ba6) Lines: 81.3 % 1643 1335 Test Date: 2026-07-25 17:02:42 Functions: 96.2 % 131 126 Legend: Lines:     hit not hit

Function Name	Hit count
Babai	0
RgM_flop	0
dbg_flatter	0
dbg_flattergram	0
fplll	0
kerint	28
matkerint0	28
lllgramkerim	35
lllkerim	35
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
kerint0	56
qflllgram	63
incrementalGSgen	168
lllallgen	168
lllgramallgen	168
lllint	183
REDgen	196
do_SWAPgen	196
qflllgram0	245
qflll0	301
pslg	504
ZM_flattergram	968
ZM_flattergram_rank	968
gramschmidt_upper	1402
dpeM_diagonal_shallow	1736
RgM_Cholesky_dynprec	2988
flattergram_i	2988
ZM_to_RM	4708
fplll_heuristic	4708
gc_lll	5462
lllgram	9089
ZC_to_RC	22450
truncexpo	24470
dpetor	26670
RgM_flip	34953
lllgramint	36439
lllall	36699
get_cholesky	44546
RgM_is_square_mat	45828
thsn	92852
setG2_heuristic	195857
realsqrdotproduct	208573
setG_heuristic	218718
Babai_heuristic	303121
dpe_negz	366754
absrsmall2	443564
rotateG	480369
ZM_is_knapsack	607699
ZM_flatter_rank	625239
fplll_flatter	626207
ZM_flatter	627253
dperotate	718506
addmuliu642n	729530
u64toineg	729530
submuliu642n	747684
absrsmall	763551
lll_trivial	771848
mulshift	938306
thre	1033979
get_gramschmidt	1099660
ZM_is_lower	1205612
lll	1244994
realdotproduct	1292770
dpe_addmuluz	1345057
drop	1347799
flat	1347799
potential	1347799
sizered	1347799
dpe_submuluz	1433660
fplll_dpe	1605258
submulshift	2074370
vectail_inplace	2093650
fplll_fast	2107630
lll_finish	2168269
affii_or_copy_gc	2183608
dpe_abssmall	2183608
dbldotsquare	2485021
gramschmidt_dynprec	2695598
affdbldpe	3210516
cget_dpemat	3210516
mpabscmp	4109596
ZM_is_upper	4239579
addmuliu2n	4665716
GS_extraprec	4729082
condition_bound	4729082
submuliu2n	4739476
Babai_dpe	4767812
ZM2_lll_norms	4851097
lllfp	5375646
dpe_cmp	5479896
dpe_cmpmul	5479896
spread	5855913
dpe_addz	6685223
ZM_lll_norms	7144116
nbits2prec64	7496447
cget_dblmat	8430520
dpe_muluz	8704420
addmuliu64_inplace	10613308
submuliu64_inplace	10666132
addmulziu	10826608
pari_rint	11658535
rotateG_fast	11962607
submulziu	12229364
update_alpha	12442976
cget_dpevec	13317586
dpe_divz	15649791
dpe_abscmp	15813472
submulzu2n	16867897
addmulzu2n	17070592
setG2_fast	17618216
u64toi	22027124
affidpe	22440775
setG_fast	23273174
set_line	25553157
Babai_fast	31686245
addzi	32506304
affdpe	33168987
rotate	33266134
subzi	33271482
cget_dblvec	35114172
dblrotate	35887821
dpe_submulz	69699162
dpe_mulz	75179058
dpe_subz	76424967
dpe_normalize	77498429
dbldotproduct	129239865
dpe_normalize0	153390448
itodbl_exp	177117102

Generated by: LCOV version 2.0-1