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 30584-b9873745ba) Lines: 1336 1642 81.4 % Date: 2025-12-21 09:21:02 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	20146
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44538
RgM_is_square_mat	45828
dpetor	93800
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244391
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412410
rotateG	443224
ZM_is_knapsack	606298
ZM_flatter_rank	624826
fplll_flatter	625787
ZM_flatter	626840
dperotate	652349
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771690
dpe_muluz	799872
get_gramschmidt	1098819
realdotproduct	1183370
ZM_is_lower	1205093
lll	1243320
drop	1347054
potential	1347054
flat	1347056
sizered	1347056
affii_or_copy_gc	1390391
dpe_abssmall	1390414
submulshift	1501323
fplll_dpe	1603378
dpe_addz	1943118
vectail_inplace	2090225
fplll_fast	2103741
lll_finish	2164350
dbldotsquare	2480875
gramschmidt_dynprec	2694111
affdbldpe	3206764
cget_dpemat	3206777
addmuliu2n	4090080
mpabscmp	4096328
submuliu2n	4182127
ZM_is_upper	4236283
addmulziu	4580754
Babai_dpe	4655003
GS_extraprec	4727628
condition_bound	4727628
ZM2_lll_norms	4847589
gsisinv	5195373
dpe_cmpmul	5263358
dpe_cmp	5263360
lllfp	5371206
spread	5852568
submulziu	5923227
ZM_lll_norms	7136572
nbits2prec64	7492499
cget_dblmat	8414941
addmuliu64_inplace	9573025
submuliu64_inplace	9624052
pari_rint	10774339
rotateG_fast	11521431
update_alpha	11964734
cget_dpevec	13295586
dpe_divz	14076323
dpe_abscmp	14516784
setG2_fast	16990339
addzi	17783128
subzi	18524686
u64toi	19881722
affidpe	20752070
setG_fast	22618410
set_line	24889062
affdpe	25731177
Babai_fast	30148052
rotate	31882229
dblrotate	34564189
cget_dblvec	34981560
dpe_normalize	48110864
dpe_submulz	51703051
dpe_subz	53734161
dpe_mulz	56966268
dpe_normalize0	108567689
dbldotproduct	118049573
itodbl_exp	162382639

Generated by: LCOV version 1.16