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

Generated by: LCOV version 2.0-1