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: 2025-12-03 09:22:05 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	244441
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412454
rotateG	443280
ZM_is_knapsack	606576
ZM_flatter_rank	624946
fplll_flatter	625906
ZM_flatter	626960
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771753
dpe_muluz	799918
get_gramschmidt	1099049
realdotproduct	1183370
ZM_is_lower	1205216
lll	1243392
drop	1347401
potential	1347401
flat	1347402
sizered	1347402
affii_or_copy_gc	1390578
dpe_abssmall	1390600
submulshift	1507243
fplll_dpe	1603867
dpe_addz	1943182
vectail_inplace	2090960
fplll_fast	2104517
lll_finish	2165214
dbldotsquare	2481814
gramschmidt_dynprec	2694802
affdbldpe	3207731
cget_dpemat	3207744
mpabscmp	4097560
addmuliu2n	4106015
submuliu2n	4199753
ZM_is_upper	4237361
addmulziu	4580783
Babai_dpe	4656275
GS_extraprec	4728391
condition_bound	4728392
ZM2_lll_norms	4848319
gsisinv	5196242
dpe_cmpmul	5264451
dpe_cmp	5264454
lllfp	5372447
spread	5853741
submulziu	5923645
ZM_lll_norms	7138154
nbits2prec64	7494168
cget_dblmat	8418059
addmuliu64_inplace	9582880
submuliu64_inplace	9633716
pari_rint	10797482
rotateG_fast	11547626
update_alpha	11991144
cget_dpevec	13299527
dpe_divz	14079230
dpe_abscmp	14519752
setG2_fast	17029548
addzi	17783650
subzi	18525025
u64toi	19904067
affidpe	20756826
setG_fast	22660265
set_line	24931464
affdpe	25735493
Babai_fast	30204580
rotate	31935143
dblrotate	34642753
cget_dblvec	34993886
dpe_normalize	48116128
dpe_submulz	51708619
dpe_subz	53739732
dpe_mulz	56972872
dpe_normalize0	108580658
dbldotproduct	118231750
itodbl_exp	162573553

Generated by: LCOV version 1.16