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 30640-c2c58e18c5) Lines: 524 558 93.9 %
Date: 2026-01-27 08:51:18 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
coredisc2 72
boundfact 84
divisorsu_fact_factored 357
check_arith_pos 594
numdiv_aux 760
divisors0 784
numdivu 815
omegau 815
bigomegau 835
sumdiv_aux 1474
sumdivk_aux 1506
fa_clean_u 1540
bigomega 1589
numdiv 1589
omega 1589
cmpu1 1750
Z_issquarefree 2214
uissquarefree_fact 2556
Z_issquarefree_fact 2814
sumdiv 3017
core0 3101
set_fact 3527
issquarefree 6371
coredisc2u_fact 7249
factor_pn_1 7490
factor_pn_1_limit 7490
sumdivk 7987
coredisc 8533
_mod4 8605
usumdivk_fact 9792
divisors_factored 12309
is_Z_factornon0 14437
factorlim 16471
cmpi1 16592
Z_lsmoothen 18034
euler_sumdiv 18679
RgV_is_ZVnon0 22843
fa_clean 23973
divisorsu_moebius 26103
clean_Z_factor 26449
usumdiv_fact 43641
core2 54571
core2_i 54643
arith_n 58934
u_euler_sumdiv 71628
Z_smoothen 82129
factoru_pow 99377
is_nf_factor 125188
coredisc2_fact 129817
divisorsu 134054
eulerphi 150920
RgV_is_prV 163424
eulerphiu 223724
divisors 353579
set_fact_check 362403
divisors_init 365937
ndiv 366224
eulerphiu_fact 631002
RgV_is_ZV0 707699
is_Z_factor 707706
uissquarefree 2422769
check_arith_non0 2630187
check_arith_all 2899584
is_Z_factorpos 7482684
is_Z_factor_i 8204822
RgV_is_ZVpos 15729293
divisorsu_fact 19385093
numdivu_fact 19403294

Generated by: LCOV version 1.16