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 30622-caa25a75db) Lines: 524 558 93.9 %
Date: 2026-01-22 09:18:00 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 80
boundfact 84
divisorsu_fact_factored 357
check_arith_pos 617
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 2788
Z_issquarefree_fact 2814
sumdiv 3017
core0 3101
set_fact 3354
issquarefree 6371
coredisc2u_fact 7249
factor_pn_1 7489
factor_pn_1_limit 7489
sumdivk 7987
coredisc 8497
_mod4 8577
usumdivk_fact 9792
divisors_factored 12369
is_Z_factornon0 14452
factorlim 16468
cmpi1 16600
Z_lsmoothen 18215
euler_sumdiv 18679
RgV_is_ZVnon0 22858
fa_clean 24048
divisorsu_moebius 26103
clean_Z_factor 26464
usumdiv_fact 43641
core2 54564
core2_i 54644
arith_n 58935
u_euler_sumdiv 71628
Z_smoothen 81939
coredisc2_fact 129815
factoru_pow 130434
eulerphi 150920
divisorsu 157337
eulerphiu 223874
is_nf_factor 245940
RgV_is_prV 295060
divisors 353471
set_fact_check 362528
divisors_init 365889
ndiv 366176
RgV_is_ZV0 615408
is_Z_factor 615415
eulerphiu_fact 634600
uissquarefree 2261030
check_arith_non0 2630076
check_arith_all 2807373
is_Z_factorpos 7726185
is_Z_factor_i 8356048
RgV_is_ZVpos 16143389
divisorsu_fact 19172134
numdivu_fact 19222241

Generated by: LCOV version 1.16