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 30754-316d984fc8) Lines: 1336 1642 81.4 % Date: 2026-03-19 09:26:57 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	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244393
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412418
rotateG	443224
ZM_is_knapsack	606501
ZM_flatter_rank	624829
fplll_flatter	625790
ZM_flatter	626843
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771771
dpe_muluz	799876
get_gramschmidt	1099278
realdotproduct	1183370
ZM_is_lower	1205499
lll	1243427
drop	1346940
flat	1346941
potential	1346941
sizered	1346941
affii_or_copy_gc	1390426
dpe_abssmall	1390437
submulshift	1499787
fplll_dpe	1603916
dpe_addz	1943122
vectail_inplace	2090990
fplll_fast	2104562
lll_finish	2165175
dbldotsquare	2482474
gramschmidt_dynprec	2693876
cget_dpemat	3207834
affdbldpe	3207835
addmuliu2n	4083936
mpabscmp	4096284
submuliu2n	4169440
ZM_is_upper	4236573
addmulziu	4580754
Babai_dpe	4656275
GS_extraprec	4727028
condition_bound	4727028
ZM2_lll_norms	4847940
gsisinv	5195221
dpe_cmpmul	5264563
dpe_cmp	5264564
lllfp	5371020
spread	5852620
submulziu	5923401
ZM_lll_norms	7137766
nbits2prec64	7492140
cget_dblmat	8418257
addmuliu64_inplace	9567325
submuliu64_inplace	9625851
pari_rint	10768473
rotateG_fast	11515836
update_alpha	11959153
cget_dpevec	13301210
dpe_divz	14078404
dpe_abscmp	14518804
setG2_fast	16984419
addzi	17783519
subzi	18525142
u64toi	19876621
affidpe	20756766
setG_fast	22615117
set_line	24886982
affdpe	25733404
Babai_fast	30142841
rotate	31871914
dblrotate	34547464
cget_dblvec	34997707
dpe_normalize	48111779
dpe_submulz	51703037
dpe_subz	53734133
dpe_mulz	56967505
dpe_normalize0	108571939
dbldotproduct	118019414
itodbl_exp	162324318

Generated by: LCOV version 1.16