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 30569-8181146aa1) Lines: 1335 1641 81.4 % Date: 2025-12-04 09:22:12 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	20294
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44560
RgM_is_square_mat	45828
dpetor	94285
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244442
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342911
absrsmall2	401466
dpe_submuluz	412454
rotateG	443280
ZM_is_knapsack	606582
ZM_flatter_rank	624947
fplll_flatter	625908
ZM_flatter	626961
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771757
dpe_muluz	799916
get_gramschmidt	1099055
realdotproduct	1183370
ZM_is_lower	1205223
lll	1243390
drop	1347385
flat	1347385
potential	1347385
sizered	1347385
affii_or_copy_gc	1390576
dpe_abssmall	1390584
submulshift	1507243
fplll_dpe	1603891
dpe_addz	1943181
vectail_inplace	2090996
fplll_fast	2104534
lll_finish	2165249
dbldotsquare	2482080
gramschmidt_dynprec	2694765
affdbldpe	3207778
cget_dpemat	3207783
mpabscmp	4097303
addmuliu2n	4105555
submuliu2n	4200083
ZM_is_upper	4237345
addmulziu	4580804
Babai_dpe	4656283
GS_extraprec	4728307
condition_bound	4728307
ZM2_lll_norms	4848271
gsisinv	5196165
dpe_cmpmul	5264454
dpe_cmp	5264459
lllfp	5372394
spread	5853672
submulziu	5923660
ZM_lll_norms	7138143
nbits2prec64	7494088
cget_dblmat	8418110
addmuliu64_inplace	9582880
submuliu64_inplace	9633716
pari_rint	10797292
rotateG_fast	11546005
update_alpha	11989439
cget_dpevec	13300277
dpe_divz	14078948
dpe_abscmp	14519474
setG2_fast	17027135
addzi	17783397
subzi	18524920
u64toi	19904067
affidpe	20756850
setG_fast	22657938
set_line	24929401
affdpe	25735081
Babai_fast	30200392
rotate	31930207
dblrotate	34637978
cget_dblvec	34993852
dpe_normalize	48113957
dpe_submulz	51706217
dpe_subz	53737327
dpe_mulz	56970479
dpe_normalize0	108575882
dbldotproduct	118216921
itodbl_exp	162600966

Generated by: LCOV version 1.16