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 30406-5b10cfdbaa) Lines: 1335 1641 81.4 % Date: 2025-07-19 09:23:05 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	20287
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44552
RgM_is_square_mat	45828
dpetor	94271
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244428
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	318942
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412443
rotateG	443280
ZM_is_knapsack	606370
ZM_flatter_rank	623971
fplll_flatter	624932
ZM_flatter	625985
dperotate	652462
addmuliu642n	671548
u64toineg	671548
submuliu642n	687471
absrsmall	696466
lll_trivial	771022
dpe_muluz	799906
get_gramschmidt	1097849
realdotproduct	1183370
ZM_is_lower	1204018
lll	1243281
drop	1345137
flat	1345137
potential	1345137
sizered	1345137
affii_or_copy_gc	1390560
dpe_abssmall	1390574
submulshift	1507243
fplll_dpe	1602636
dpe_addz	1943184
vectail_inplace	2089515
fplll_fast	2103032
lll_finish	2163733
dbldotsquare	2480159
gramschmidt_dynprec	2690273
cget_dpemat	3205267
affdbldpe	3205269
mpabscmp	4091229
addmuliu2n	4102452
submuliu2n	4195755
ZM_is_upper	4231600
addmulziu	4580784
Babai_dpe	4653119
GS_extraprec	4723016
condition_bound	4723017
ZM2_lll_norms	4839837
gsisinv	5190640
dpe_cmpmul	5261320
dpe_cmp	5261332
lllfp	5365502
spread	5847933
submulziu	5923520
ZM_lll_norms	7128155
nbits2prec64	7482736
cget_dblmat	8412103
addmuliu64_inplace	9581364
submuliu64_inplace	9632106
pari_rint	10794146
rotateG_fast	11543675
update_alpha	11987063
cget_dpevec	13289275
dpe_divz	14073096
dpe_abscmp	14513638
setG2_fast	17023567
addzi	17783271
subzi	18524651
u64toi	19900941
affidpe	20746186
setG_fast	22650633
set_line	24920013
affdpe	25729098
Babai_fast	30194264
rotate	31923296
dblrotate	34630925
cget_dblvec	34969385
dpe_normalize	48102514
dpe_submulz	51697174
dpe_subz	53728269
dpe_mulz	56958264
dpe_normalize0	108546618
dbldotproduct	118197645
itodbl_exp	162564105

Generated by: LCOV version 1.16