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

Generated by: LCOV version 1.16