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 30603-c72b2decfc) Lines: 1336 1642 81.4 % Date: 2026-01-07 09:21:48 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655046
Babai_fast	30140989
Babai_heuristic	288770
GS_extraprec	4727412
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848520
ZM_flatter	626822
ZM_flatter_rank	624808
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606249
ZM_is_lower	1205087
ZM_is_upper	4236231
ZM_lll_norms	7137502
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4090153
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580756
addmulzu2n	271563
addzi	17783197
affdbldpe	3206896
affdpe	25731197
affidpe	20752353
affii_or_copy_gc	1390424
cget_dblmat	8414997
cget_dblvec	34981858
cget_dpemat	3206894
cget_dpevec	13296056
condition_bound	4727412
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118035621
dbldotsquare	2481057
dblrotate	34544723
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516789
dpe_abssmall	1390419
dpe_addmuluz	342913
dpe_addz	1943123
dpe_cmp	5263393
dpe_cmpmul	5263387
dpe_divz	14076332
dpe_muluz	799876
dpe_mulz	56966243
dpe_negz	244392
dpe_normalize	48110950
dpe_normalize0	108567847
dpe_submuluz	412412
dpe_submulz	51702977
dpe_subz	53734076
dperotate	652350
dpetor	93802
drop	1346996
flat	1346996
flattergram_i	2967
fplll	0
fplll_dpe	1603447
fplll_fast	2103757
fplll_flatter	625769
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1098811
gramschmidt_dynprec	2693992
gramschmidt_upper	1336
gsisinv	5195166
incrementalGSgen	168
itodbl_exp	162367033
kerint	42
kerint0	70
lll	1243328
lll_finish	2164366
lll_trivial	771709
lllall	36699
lllallgen	168
lllfp	5371039
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096063
mulshift	317717
nbits2prec64	7492163
pari_rint	10767323
potential	1346997
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31869008
rotateG	443224
rotateG_fast	11514932
setG2_fast	16983474
setG2_heuristic	187610
setG_fast	22611552
setG_heuristic	205626
set_line	24882417
sizered	1346997
spread	5852312
submuliu2n	4182610
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923277
submulzu2n	262549
subzi	18524894
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11958214
vectail_inplace	2090235

Generated by: LCOV version 1.16