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:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

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 30370-b9c4b6d044) Lines: 1826 2230 81.9 % Date: 2025-07-05 09:22:59 Functions: 107 122 87.7 % Legend: Lines: hit not hit

Function Name	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	2162
vecfactoroddu_i	2162
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	27777
ifac_isprime	28003
vecfactoru_i	31967
vecfactorsquarefreeu_coprime	32745
special_primes	36024
elldouble	40073
ifac_delete	45823
INIT	51764
moebiusu_fact	54194
Z_factor_limit	55015
moebius	59591
coreu	62994
is_pth_power	68531
maxomegau	71803
Z_oddprimedivisors_fast	123447
Z_factor_primes	124050
Z_oddprimedivisors_gcd	124727
aux_end	124875
nextprime	130781
Z_issmooth_fact	175966
get_rule	208727
ecm_elladd	234487
ecm_elladd0	240431
absZ_factor_limit	287693
is_kth_power	479375
STOREu	673001
STORE	700930
core	709554
u_oddprimedivisors_gcd	808123
tridiv_bound	869567
absZ_factor_limit_strict	895445
factoru_primes	912708
unextprime_overflow	997953
unextprime	1135519
uis_357_power	2366932
uis_357_powermod	2421411
moebiusu	2484205
is_357_power	2800892
absZ_factor	3337048
factoru	3802876
check_res	3927785
tridiv_boundu	4376656
snextpr	4531317
FpE_add_i	8291496
Z_factor	9802361
ifactor	9867706
ifactor_sign	14390750
u_357_divides	16057708
factoru_result	17610482
factoru_sign	18069373
one_iter	28241639
matsmalltrunc_init	37763144
matsmalltrunc_append	96424394
u_forprime_next_fast	143069892

Generated by: LCOV version 1.16