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 30590-f14e077362) Lines: 1336 1642 81.4 % Date: 2026-01-01 09:21:12 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	44539
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244394
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412410
rotateG	443223
ZM_is_knapsack	606331
ZM_flatter_rank	624816
fplll_flatter	625777
ZM_flatter	626831
dperotate	652348
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771682
dpe_muluz	799872
get_gramschmidt	1098807
realdotproduct	1183370
ZM_is_lower	1205080
lll	1243313
flat	1347034
drop	1347035
potential	1347035
sizered	1347035
affii_or_copy_gc	1390407
dpe_abssmall	1390425
submulshift	1501323
fplll_dpe	1603376
dpe_addz	1943126
vectail_inplace	2090253
fplll_fast	2103766
lll_finish	2164380
dbldotsquare	2480861
gramschmidt_dynprec	2694067
affdbldpe	3206750
cget_dpemat	3206759
addmuliu2n	4087944
mpabscmp	4096075
submuliu2n	4180340
ZM_is_upper	4236205
addmulziu	4580785
Babai_dpe	4654956
condition_bound	4727504
GS_extraprec	4727505
ZM2_lll_norms	4847300
gsisinv	5195255
dpe_cmpmul	5263289
dpe_cmp	5263295
lllfp	5371142
spread	5852481
submulziu	5923264
ZM_lll_norms	7136304
nbits2prec64	7492311
cget_dblmat	8415054
addmuliu64_inplace	9572959
submuliu64_inplace	9623916
pari_rint	10773852
rotateG_fast	11519675
update_alpha	11963030
cget_dpevec	13295343
dpe_divz	14075938
dpe_abscmp	14516403
setG2_fast	16987565
addzi	17783022
subzi	18524603
u64toi	19881520
affidpe	20751580
setG_fast	22615261
set_line	24885697
affdpe	25730798
Babai_fast	30143492
rotate	31877044
dblrotate	34558945
cget_dblvec	34980555
dpe_normalize	48108314
dpe_submulz	51700530
dpe_subz	53731643
dpe_mulz	56963681
dpe_normalize0	108562008
dbldotproduct	118027035
itodbl_exp	162332728

Generated by: LCOV version 1.16