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 30563-682842a727) Lines: 1335 1641 81.4 % Date: 2025-11-29 09:23:24 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	20287
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44560
RgM_is_square_mat	45828
dpetor	94271
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244425
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	318943
dpe_addmuluz	342913
absrsmall2	402705
dpe_submuluz	412454
rotateG	443711
ZM_is_knapsack	606712
ZM_flatter_rank	624471
fplll_flatter	625431
ZM_flatter	626485
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	698128
lll_trivial	771730
dpe_muluz	799918
get_gramschmidt	1098343
realdotproduct	1186355
ZM_is_lower	1204524
lll	1243328
drop	1345941
potential	1345943
flat	1345945
sizered	1345945
affii_or_copy_gc	1390591
dpe_abssmall	1390605
submulshift	1507251
fplll_dpe	1603152
dpe_addz	1943191
vectail_inplace	2090372
fplll_fast	2103883
lll_finish	2164598
dbldotsquare	2480872
gramschmidt_dynprec	2691889
cget_dpemat	3206300
affdbldpe	3206303
mpabscmp	4093375
addmuliu2n	4107744
submuliu2n	4201484
ZM_is_upper	4233731
addmulziu	4580841
Babai_dpe	4654233
GS_extraprec	4724829
condition_bound	4724829
ZM2_lll_norms	4843315
gsisinv	5192438
dpe_cmp	5262433
dpe_cmpmul	5262436
lllfp	5367982
spread	5850074
submulziu	5923693
ZM_lll_norms	7132542
nbits2prec64	7486655
cget_dblmat	8415523
addmuliu64_inplace	9581970
submuliu64_inplace	9632820
pari_rint	10796591
rotateG_fast	11546997
update_alpha	11990792
cget_dpevec	13292741
dpe_divz	14075359
dpe_abscmp	14515814
setG2_fast	17028796
addzi	17783882
subzi	18525315
u64toi	19902261
affidpe	20749941
setG_fast	22657922
set_line	24928775
affdpe	25731513
Babai_fast	30202777
rotate	31935380
dblrotate	34640909
cget_dblvec	34982127
dpe_normalize	48109110
dpe_submulz	51702823
dpe_subz	53734007
dpe_mulz	56965167
dpe_normalize0	108562537
dbldotproduct	118229307
itodbl_exp	162639339

Generated by: LCOV version 1.16