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 30595-a3cd9a95e8) Lines: 1336 1642 81.4 % Date: 2026-01-04 09:21:39 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4654976
Babai_fast	30146907
Babai_heuristic	289747
GS_extraprec	4727507
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4847519
ZM_flatter	626827
ZM_flatter_rank	624813
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606310
ZM_is_lower	1205085
ZM_is_upper	4236241
ZM_lll_norms	7136500
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4090293
addmuliu642n	668454
addmuliu64_inplace	9572997
addmulziu	4580822
addmulzu2n	271563
addzi	17783357
affdbldpe	3206773
affdpe	25731219
affidpe	20752120
affii_or_copy_gc	1390407
cget_dblmat	8414986
cget_dblvec	34982018
cget_dpemat	3206771
cget_dpevec	13295691
condition_bound	4727507
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118045689
dbldotsquare	2480986
dblrotate	34563290
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516691
dpe_abssmall	1390420
dpe_addmuluz	342912
dpe_addz	1943117
dpe_cmp	5263315
dpe_cmpmul	5263313
dpe_divz	14076274
dpe_muluz	799875
dpe_mulz	56966181
dpe_negz	244388
dpe_normalize	48110730
dpe_normalize0	108567404
dpe_submuluz	412412
dpe_submulz	51702981
dpe_subz	53734112
dperotate	652350
dpetor	93802
drop	1347040
flat	1347040
flattergram_i	2967
fplll	0
fplll_dpe	1603387
fplll_fast	2103748
fplll_flatter	625774
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44538
get_gramschmidt	1098811
gramschmidt_dynprec	2694081
gramschmidt_upper	1336
gsisinv	5195260
incrementalGSgen	168
itodbl_exp	162377252
kerint	42
kerint0	70
lll	1243327
lll_finish	2164364
lll_trivial	771702
lllall	36699
lllallgen	168
lllfp	5371169
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096285
mulshift	317718
nbits2prec64	7492394
pari_rint	10773914
potential	1347041
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31883447
rotateG	443655
rotateG_fast	11521126
setG2_fast	16989703
setG2_heuristic	188352
setG_fast	22617840
setG_heuristic	206374
set_line	24888528
sizered	1347041
spread	5852465
submuliu2n	4182593
submuliu642n	684645
submuliu64_inplace	9623916
submulshift	1501331
submulziu	5923289
submulzu2n	262549
subzi	18524892
truncexpo	12139
u64toi	19881558
u64toineg	668454
update_alpha	11964846
vectail_inplace	2090234

Generated by: LCOV version 1.16