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:

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 - dirichlet.c (source / functions) Coverage Total Hit
Test: PARI/GP v2.18.1 lcov report (development 31041-bd73e9fcdd) Lines: 95.5 % 506 483
Test Date: 2026-07-22 22:45:42 Functions: 93.3 % 45 42
Legend: Lines:     hit not hit

Function Name Sort by function name Hit count Sort by function hit count
mktrivial 0
pardirpowerssum 0
pardirpowerssum0 0
err_direuler 28
dirpowerssum 133
dirpowerssum0 154
dirpowerssumfun 203
dirpowerssumfun_i 203
vecf 238
smalldirpowerssum 280
direuler 301
naivedirpowerssum 301
direuler_bad 658
vecpowuu 686
dirpowers 903
_Qtor 973
halfconj 987
vR_get_vW 987
dirpowsuminit 1050
mkdata 1050
mk01 1092
pardirpowerssumfun 1127
pardirpowerssumfun_i 1127
Qtor 2457
vecmulsqlv 3234
direuler_Sbad 4081
pardireuler 4438
direulertou 10941
gp_callUp 13748
vecpowug 22272
get_needlog 23133
parsqf_worker 29148
mksqfloop 29561
dirmuleuler_small 33460
parsumprimefun_worker 38309
sumprimeloop 38342
primelist 38731
add4 48475
v2unpack 68568
v2pack 69544
dirmuleuler_large 395598
eval_bad 688303
direuler_factor 752871
mycallvec 5351435
smallfact 18262659

Generated by: LCOV version 2.0-1