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 30364-8108102770) Lines: 1826 2230 81.9 %
Date: 2025-06-30 09:21:07 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 2278
vecfactoroddu_i 2278
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 27779
ifac_isprime 28004
vecfactoru_i 31966
vecfactorsquarefreeu_coprime 32746
special_primes 36025
elldouble 40073
ifac_delete 45823
INIT 51764
moebiusu_fact 54194
Z_factor_limit 55022
moebius 57580
coreu 62994
is_pth_power 68530
maxomegau 71802
Z_oddprimedivisors_fast 123445
Z_factor_primes 124048
Z_oddprimedivisors_gcd 124725
aux_end 124873
nextprime 130781
Z_issmooth_fact 176186
get_rule 208727
ecm_elladd 234487
ecm_elladd0 240431
absZ_factor_limit 287682
is_kth_power 478268
STOREu 673009
STORE 700940
core 709541
u_oddprimedivisors_gcd 808127
tridiv_bound 869555
absZ_factor_limit_strict 895441
factoru_primes 912709
unextprime_overflow 997934
unextprime 1135496
uis_357_power 2366933
uis_357_powermod 2421415
moebiusu 2472971
is_357_power 2800895
absZ_factor 3336942
factoru 3799251
check_res 3927803
tridiv_boundu 4376822
snextpr 4531317
FpE_add_i 8291496
Z_factor 9802344
ifactor 9867678
ifactor_sign 14390598
u_357_divides 16046945
factoru_result 17606735
factoru_sign 18065370
one_iter 28260783
matsmalltrunc_init 38922708
matsmalltrunc_append 98939805
u_forprime_next_fast 142405062

Generated by: LCOV version 1.16