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 30718-589d22da69) Lines: 1336 1642 81.4 % Date: 2026-02-27 09:23:18 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655087
Babai_fast	30143885
Babai_heuristic	288770
GS_extraprec	4727657
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848620
ZM_flatter	626834
ZM_flatter_rank	624820
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606424
ZM_is_lower	1205094
ZM_is_upper	4236425
ZM_lll_norms	7137776
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4087878
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580815
addmulzu2n	271563
addzi	17783392
affdbldpe	3206927
affdpe	25731441
affidpe	20752582
affii_or_copy_gc	1390402
cget_dblmat	8415755
cget_dblvec	34985486
cget_dpemat	3206927
cget_dpevec	13296153
condition_bound	4727657
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118042408
dbldotsquare	2481175
dblrotate	34547770
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516986
dpe_abssmall	1390417
dpe_addmuluz	342913
dpe_addz	1943124
dpe_cmp	5263441
dpe_cmpmul	5263435
dpe_divz	14076480
dpe_muluz	799875
dpe_mulz	56967327
dpe_negz	244387
dpe_normalize	48111955
dpe_normalize0	108570088
dpe_submuluz	412411
dpe_submulz	51703991
dpe_subz	53735091
dperotate	652350
dpetor	93802
drop	1347090
flat	1347090
flattergram_i	2967
fplll	0
fplll_dpe	1603465
fplll_fast	2103945
fplll_flatter	625781
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44536
get_gramschmidt	1098815
gramschmidt_dynprec	2694161
gramschmidt_upper	1336
gsisinv	5195417
incrementalGSgen	168
itodbl_exp	162370331
kerint	42
kerint0	70
lll	1243327
lll_finish	2164555
lll_trivial	771700
lllall	36699
lllallgen	168
lllfp	5371321
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096714
mulshift	317717
nbits2prec64	7492628
pari_rint	10768770
potential	1347090
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31872082
rotateG	443224
rotateG_fast	11515940
setG2_fast	16985168
setG2_heuristic	187610
setG_fast	22613962
setG_heuristic	205626
set_line	24885043
sizered	1347090
spread	5852735
submuliu2n	4178741
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923259
submulzu2n	262549
subzi	18524737
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11959134
vectail_inplace	2090429

Generated by: LCOV version 1.16