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 - ifactor1.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30365-beea1ff998) Lines: 1826 2230 81.9 %
Date: 2025-07-01 09:21:48 Functions: 107 122 87.7 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
COPY 0
SHALLOWCOPY 0
Z_ECM 0
Z_issmooth 0
Z_pollardbrent 0
coreu_fact 0
ifac_GC 0
ifac_check 0
ifac_factor_dbg 0
ifac_print 0
ifac_realloc 0
radicalu 0
rho_dbg 0
vecfactoroddu 0
vecfactoru 0
ifac_ispowerful 7
ifac_resort 7
ifac_sort_one 7
Z_to_Up 14
ifac_defrag 14
uprecprime 38
vecsquarefreeu 49
precprime 56
ECM_alloc 57
ECM_init 57
ECM_loop 93
dvdii_inplace 219
ifac_moebius 236
coreu_init_from_squarefree 247
ifac_skip 320
core_init_from_squarefree 327
ifac_core 353
ifac_moebiusu 663
Zn_ispower 756
ifac_read 760
Z_pval_inplace 765
Zp_ispower 798
pollardbrent_i 802
uis_357_powermod_32bit_2 846
ifac_factoru 863
update_pow 866
ispowerful 1708
diviiexact_inplace 1883
squfof_ambig 2091
maxomegaoddu 2370
vecfactoroddu_i 2370
ifac_start 2509
ifac_decomp 2562
Z_factor_until 3045
ellfacteur 3255
ifac_insert_multiplet 3272
pollardbrent 3482
squfof 5113
ifac_crack 5783
ifac_whoiswho 5788
ifac_start_hint 5934
ifac_next 6645
vecfactorsquarefreeu 7014
ecm_elladd2 7194
uisprime_nosmall 7855
ifac_divide 9829
factorint 10290
ifac_checkprime 11267
ifac_main 14189
uis_357_powermod_32bit_1 14314
ifac_find 15269
ZV_aff 25650
ellmult 25650
STOREi 27778
ifac_isprime 28003
vecfactoru_i 31966
vecfactorsquarefreeu_coprime 32740
special_primes 36024
elldouble 40073
ifac_delete 45823
INIT 51764
moebiusu_fact 54194
Z_factor_limit 55026
moebius 57124
coreu 62994
is_pth_power 68522
maxomegau 71797
Z_oddprimedivisors_fast 123446
Z_factor_primes 124049
Z_oddprimedivisors_gcd 124726
aux_end 124873
nextprime 130781
Z_issmooth_fact 175403
get_rule 208727
ecm_elladd 234487
ecm_elladd0 240431
absZ_factor_limit 287686
is_kth_power 479271
STOREu 672999
STORE 700928
core 709544
u_oddprimedivisors_gcd 808125
tridiv_bound 869566
absZ_factor_limit_strict 895433
factoru_primes 912707
unextprime_overflow 998043
unextprime 1135616
uis_357_power 2366933
uis_357_powermod 2421403
moebiusu 2480971
is_357_power 2800883
absZ_factor 3337027
factoru 3802562
check_res 3927771
tridiv_boundu 4377423
snextpr 4531317
FpE_add_i 8291496
Z_factor 9802321
ifactor 9867679
ifactor_sign 14390679
u_357_divides 16055004
factoru_result 17610248
factoru_sign 18068872
one_iter 28267340
matsmalltrunc_init 38454026
matsmalltrunc_append 97543980
u_forprime_next_fast 142435448

Generated by: LCOV version 1.16