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: 2026-01-02 09:20:44 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4654889
Babai_fast	30143110
Babai_heuristic	288770
GS_extraprec	4727383
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847281
ZM_flatter	626813
ZM_flatter_rank	624799
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606289
ZM_is_lower	1205068
ZM_is_upper	4236121
ZM_lll_norms	7136218
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4084892
addmuliu642n	668454
addmuliu64_inplace	9572959
addmulziu	4580703
addmulzu2n	271563
addzi	17782609
affdbldpe	3206723
affdpe	25730492
affidpe	20751391
affii_or_copy_gc	1390383
cget_dblmat	8414832
cget_dblvec	34980506
cget_dpemat	3206729
cget_dpevec	13295343
condition_bound	4727383
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118024788
dbldotsquare	2480923
dblrotate	34558030
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516207
dpe_abssmall	1390416
dpe_addmuluz	342913
dpe_addz	1943116
dpe_cmp	5263236
dpe_cmpmul	5263228
dpe_divz	14075741
dpe_muluz	799874
dpe_mulz	56963224
dpe_negz	244385
dpe_normalize	48107999
dpe_normalize0	108561029
dpe_submuluz	412412
dpe_submulz	51700161
dpe_subz	53731174
dperotate	652350
dpetor	93802
drop	1346987
flat	1346987
flattergram_i	2967
fplll	0
fplll_dpe	1603361
fplll_fast	2103713
fplll_flatter	625760
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44537
get_gramschmidt	1098796
gramschmidt_dynprec	2693974
gramschmidt_upper	1336
gsisinv	5195131
incrementalGSgen	168
itodbl_exp	162321271
kerint	42
kerint0	70
lll	1243313
lll_finish	2164316
lll_trivial	771688
lllall	36699
lllallgen	168
lllfp	5371007
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096015
mulshift	317717
nbits2prec64	7492109
pari_rint	10773350
potential	1346988
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31876114
rotateG	443224
rotateG_fast	11519371
setG2_fast	16987160
setG2_heuristic	187610
setG_fast	22614777
setG_heuristic	205626
set_line	24884644
sizered	1346988
spread	5852315
submuliu2n	4176255
submuliu642n	684645
submuliu64_inplace	9623916
submulshift	1501323
submulziu	5923164
submulzu2n	262549
subzi	18524284
truncexpo	12138
u64toi	19881520
u64toineg	668454
update_alpha	11962719
vectail_inplace	2090189

Generated by: LCOV version 1.16