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 30145-32f0acf4da) Lines: 1813 2216 81.8 % Date: 2025-04-18 09:18:41 Functions: 105 120 87.5 % 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
ifac_moebius	236
coreu_init_from_squarefree	247
ifac_skip	327
core_init_from_squarefree	334
ifac_core	360
ifac_moebiusu	663
Zn_ispower	756
ifac_read	774
Zp_ispower	798
pollardbrent_i	802
uis_357_powermod_32bit_2	825
ifac_factoru	863
update_pow	866
ispowerful	1708
diviiexact_inplace	1883
squfof_ambig	2091
maxomegaoddu	2256
vecfactoroddu_i	2256
ifac_start	2516
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	5941
ifac_next	6645
vecfactorsquarefreeu	7014
ecm_elladd2	7194
uisprime_nosmall	7861
ifac_divide	9829
factorint	10290
ifac_checkprime	11267
uis_357_powermod_32bit_1	13733
ifac_main	14189
ifac_find	15290
ZV_aff	25650
ellmult	25650
STOREi	27779
ifac_isprime	28010
vecfactoru_i	31952
vecfactorsquarefreeu_coprime	32567
special_primes	36026
elldouble	40073
ifac_delete	45872
Z_factor_limit	49504
INIT	51820
moebiusu_fact	54194
moebius	57939
coreu	62994
is_pth_power	64442
maxomegau	71610
Z_oddprimedivisors_fast	123357
Z_factor_primes	123960
Z_oddprimedivisors_gcd	124644
aux_end	124787
nextprime	130781
Z_issmooth_fact	175307
get_rule	208727
ecm_elladd	234487
ecm_elladd0	240431
absZ_factor_limit	287325
is_kth_power	425259
STOREu	672691
STORE	700622
core	709549
u_oddprimedivisors_gcd	808076
tridiv_bound	869470
absZ_factor_limit_strict	887087
factoru_primes	912569
unextprime_overflow	997855
unextprime	1134427
uis_357_power	2366948
uis_357_powermod	2417922
moebiusu	2483027
is_357_power	2796815
absZ_factor	3276073
factoru	3751138
check_res	3920970
tridiv_boundu	4368845
snextpr	4531317
FpE_add_i	8291496
Z_factor	9485988
ifactor	9545795
ifactor_sign	13999143
u_357_divides	15793418
factoru_result	17194389
factoru_sign	17625968
one_iter	28250939
matsmalltrunc_init	37853617
matsmalltrunc_append	96725366
u_forprime_next_fast	142099187

Generated by: LCOV version 1.16