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
Babai_dpe	4654233
Babai_fast	30202777
Babai_heuristic	289747
GS_extraprec	4724829
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4843315
ZM_flatter	626485
ZM_flatter_rank	624471
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606712
ZM_is_lower	1204524
ZM_is_upper	4233731
ZM_lll_norms	7132542
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4107744
addmuliu642n	671548
addmuliu64_inplace	9581970
addmulziu	4580841
addmulzu2n	271563
addzi	17783882
affdbldpe	3206303
affdpe	25731513
affidpe	20749941
affii_or_copy_gc	1390591
cget_dblmat	8415523
cget_dblvec	34982127
cget_dpemat	3206300
cget_dpevec	13292741
condition_bound	4724829
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118229307
dbldotsquare	2480872
dblrotate	34640909
do_SWAPgen	196
dpeM_diagonal_shallow	20287
dpe_abscmp	14515814
dpe_abssmall	1390605
dpe_addmuluz	342913
dpe_addz	1943191
dpe_cmp	5262433
dpe_cmpmul	5262436
dpe_divz	14075359
dpe_muluz	799918
dpe_mulz	56965167
dpe_negz	244425
dpe_normalize	48109110
dpe_normalize0	108562537
dpe_submuluz	412454
dpe_submulz	51702823
dpe_subz	53734007
dperotate	652462
dpetor	94271
drop	1345941
flat	1345945
flattergram_i	2967
fplll	0
fplll_dpe	1603152
fplll_fast	2103883
fplll_flatter	625431
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44560
get_gramschmidt	1098343
gramschmidt_dynprec	2691889
gramschmidt_upper	1336
gsisinv	5192438
incrementalGSgen	168
itodbl_exp	162639339
kerint	42
kerint0	70
lll	1243328
lll_finish	2164598
lll_trivial	771730
lllall	36699
lllallgen	168
lllfp	5367982
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4093375
mulshift	318943
nbits2prec64	7486655
pari_rint	10796591
potential	1345943
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31935380
rotateG	443711
rotateG_fast	11546997
setG2_fast	17028796
setG2_heuristic	188352
setG_fast	22657922
setG_heuristic	206374
set_line	24928775
sizered	1345945
spread	5850074
submuliu2n	4201484
submuliu642n	687471
submuliu64_inplace	9632820
submulshift	1507251
submulziu	5923693
submulzu2n	262549
subzi	18525315
truncexpo	12139
u64toi	19902261
u64toineg	671548
update_alpha	11990792
vectail_inplace	2090372

Generated by: LCOV version 1.16