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 30772-246cd0a587) Lines: 1336 1642 81.4 % Date: 2026-03-29 09:27:34 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
kerint	28
matkerint0	28
lllgramkerim	35
lllkerim	35
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
kerint0	56
qflllgram	63
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	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44537
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244414
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342900
absrsmall2	401466
dpe_submuluz	412413
rotateG	443223
ZM_is_knapsack	606482
ZM_flatter_rank	624833
fplll_flatter	625794
ZM_flatter	626847
dperotate	652349
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771768
dpe_muluz	799859
get_gramschmidt	1099251
realdotproduct	1183370
ZM_is_lower	1205471
lll	1243425
drop	1346946
flat	1346946
potential	1346946
sizered	1346946
affii_or_copy_gc	1390390
dpe_abssmall	1390400
submulshift	1499787
fplll_dpe	1603875
dpe_addz	1943116
vectail_inplace	2090962
fplll_fast	2104513
lll_finish	2165125
dbldotsquare	2482443
gramschmidt_dynprec	2693891
affdbldpe	3207748
cget_dpemat	3207748
addmuliu2n	4086042
mpabscmp	4096140
submuliu2n	4172752
ZM_is_upper	4236547
addmulziu	4580593
Babai_dpe	4656208
condition_bound	4727095
GS_extraprec	4727096
ZM2_lll_norms	4847969
gsisinv	5195268
dpe_cmpmul	5264489
dpe_cmp	5264494
lllfp	5371033
spread	5852654
submulziu	5923134
ZM_lll_norms	7137720
nbits2prec64	7492132
cget_dblmat	8417993
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10767874
rotateG_fast	11514933
update_alpha	11958232
cget_dpevec	13300936
dpe_divz	14078147
dpe_abscmp	14518621
setG2_fast	16982943
addzi	17782770
subzi	18524370
u64toi	19876486
affidpe	20756340
setG_fast	22613258
set_line	24884879
affdpe	25732924
Babai_fast	30140126
rotate	31869214
dblrotate	34544710
cget_dblvec	34996162
dpe_normalize	48110747
dpe_submulz	51701984
dpe_subz	53733103
dpe_mulz	56966336
dpe_normalize0	108569483
dbldotproduct	118010558
itodbl_exp	162305405

Generated by: LCOV version 1.16