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 30617-dd5c93fb0e) Lines: 1336 1642 81.4 % Date: 2026-01-19 09:22:13 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655140
Babai_fast	30142890
Babai_heuristic	288770
GS_extraprec	4727905
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848876
ZM_flatter	626851
ZM_flatter_rank	624837
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606351
ZM_is_lower	1205120
ZM_is_upper	4236598
ZM_lll_norms	7137995
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4089482
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580790
addmulzu2n	271563
addzi	17783380
affdbldpe	3206974
affdpe	25731500
affidpe	20752762
affii_or_copy_gc	1390406
cget_dblmat	8415569
cget_dblvec	34984527
cget_dpemat	3206983
cget_dpevec	13296501
condition_bound	4727905
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118038154
dbldotsquare	2481198
dblrotate	34546871
do_SWAPgen	196
dpeM_diagonal_shallow	20146
dpe_abscmp	14517059
dpe_abssmall	1390425
dpe_addmuluz	342913
dpe_addz	1943127
dpe_cmp	5263484
dpe_cmpmul	5263488
dpe_divz	14076614
dpe_muluz	799874
dpe_mulz	56967036
dpe_negz	244394
dpe_normalize	48111713
dpe_normalize0	108569571
dpe_submuluz	412412
dpe_submulz	51703665
dpe_subz	53734837
dperotate	652350
dpetor	93800
drop	1347164
flat	1347165
flattergram_i	2967
fplll	0
fplll_dpe	1603488
fplll_fast	2103896
fplll_flatter	625798
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44537
get_gramschmidt	1098848
gramschmidt_dynprec	2694327
gramschmidt_upper	1336
gsisinv	5195671
incrementalGSgen	168
itodbl_exp	162345306
kerint	42
kerint0	70
lll	1243328
lll_finish	2164500
lll_trivial	771705
lllall	36699
lllallgen	168
lllfp	5371541
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096715
mulshift	317717
nbits2prec64	7493001
pari_rint	10768499
potential	1347161
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31871207
rotateG	443224
rotateG_fast	11515646
setG2_fast	16984412
setG2_heuristic	187610
setG_fast	22612885
setG_heuristic	205626
set_line	24883223
sizered	1347165
spread	5852914
submuliu2n	4181807
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923278
submulzu2n	262549
subzi	18524959
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11958963
vectail_inplace	2090375

Generated by: LCOV version 1.16