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 30401-87099e65a6) Lines: 1826 2230 81.9 %
Date: 2025-07-18 09:23:12 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 2232
vecfactoroddu_i 2232
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 14323
ifac_find 15269
ZV_aff 25650
ellmult 25650
STOREi 27779
ifac_isprime 28003
vecfactoru_i 31966
vecfactorsquarefreeu_coprime 32760
special_primes 36025
elldouble 40073
ifac_delete 45823
INIT 51764
moebiusu_fact 54194
Z_factor_limit 55027
moebius 57516
coreu 62994
is_pth_power 68586
maxomegau 71817
Z_oddprimedivisors_fast 123442
Z_factor_primes 124045
Z_oddprimedivisors_gcd 124722
aux_end 124870
nextprime 130781
Z_issmooth_fact 175851
get_rule 208727
ecm_elladd 234487
ecm_elladd0 240431
absZ_factor_limit 287692
is_kth_power 480196
STOREu 672980
STORE 700911
core 709530
u_oddprimedivisors_gcd 808135
tridiv_bound 869532
absZ_factor_limit_strict 895397
factoru_primes 912714
unextprime_overflow 999204
unextprime 1137972
uis_357_power 2366934
uis_357_powermod 2421457
moebiusu 2486969
is_357_power 2800947
absZ_factor 3337010
factoru 3811217
check_res 3927885
tridiv_boundu 4376201
snextpr 4531317
FpE_add_i 8291496
Z_factor 9793812
ifactor 9859209
ifactor_sign 14382190
u_357_divides 16057856
factoru_result 17610646
factoru_sign 18069192
one_iter 28255114
matsmalltrunc_init 38429782
matsmalltrunc_append 97640834
u_forprime_next_fast 143011112

Generated by: LCOV version 1.16