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 - arith2.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30499-74bdd0ac5b) Lines: 524 558 93.9 %
Date: 2025-09-17 09:23:49 Functions: 71 76 93.4 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
core2fa 0
core2partial 0
corefa 0
corepartial 0
fuse_Z_factor 0
is_nf_extfactor 14
coredisc0 56
corediscs 56
boundfact 84
coredisc2 84
divisorsu_fact_factored 350
check_arith_pos 630
numdiv_aux 760
divisors0 784
numdivu 815
omegau 815
bigomegau 835
sumdiv_aux 1474
fa_clean_u 1498
sumdivk_aux 1506
bigomega 1589
numdiv 1589
omega 1589
cmpu1 1701
Z_issquarefree 2214
Z_issquarefree_fact 2814
uissquarefree_fact 2940
sumdiv 3017
core0 3101
set_fact 3647
issquarefree 6469
coredisc2u_fact 7439
factor_pn_1 7490
factor_pn_1_limit 7490
sumdivk 7987
coredisc 8526
_mod4 8610
usumdivk_fact 9792
divisors_factored 12453
is_Z_factornon0 14462
factorlim 16471
cmpi1 16646
euler_sumdiv 18679
Z_lsmoothen 19481
RgV_is_ZVnon0 22868
fa_clean 24171
divisorsu_moebius 26089
clean_Z_factor 26459
usumdiv_fact 43641
core2 54564
core2_i 54648
arith_n 58939
u_euler_sumdiv 71628
Z_smoothen 82168
coredisc2_fact 129817
factoru_pow 141648
eulerphi 150920
divisorsu 162753
eulerphiu 223976
is_nf_factor 273769
RgV_is_prV 323974
divisors 353801
set_fact_check 362649
divisors_init 366303
ndiv 366583
eulerphiu_fact 635596
RgV_is_ZV0 707751
is_Z_factor 707760
uissquarefree 2432211
check_arith_non0 2628962
check_arith_all 2900067
is_Z_factorpos 7791960
is_Z_factor_i 8514181
RgV_is_ZVpos 16372063
divisorsu_fact 18642274
numdivu_fact 18700702

Generated by: LCOV version 1.16