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 30007-407ab607e8) Lines: 1812 2216 81.8 % Date: 2025-02-20 09:19:49 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	320
core_init_from_squarefree	327
ifac_core	353
ifac_moebiusu	663
Zn_ispower	756
ifac_read	760
Zp_ispower	798
pollardbrent_i	802
uis_357_powermod_32bit_2	824
ifac_factoru	857
update_pow	859
ispowerful	1708
diviiexact_inplace	1883
squfof_ambig	2091
maxomegaoddu	2280
vecfactoroddu_i	2280
ifac_start	2509
ifac_decomp	2561
Z_factor_until	3045
ellfacteur	3255
ifac_insert_multiplet	3272
pollardbrent	3482
squfof	5113
ifac_crack	5776
ifac_whoiswho	5781
ifac_start_hint	5927
ifac_next	6633
vecfactorsquarefreeu	7014
ecm_elladd2	7194
uisprime_nosmall	7872
ifac_divide	9822
factorint	10290
ifac_checkprime	11260
ifac_main	14175
uis_357_powermod_32bit_1	14424
ifac_find	15255
ZV_aff	25650
ellmult	25650
ifac_isprime	28101
STOREi	31166
vecfactoru_i	31923
vecfactorsquarefreeu_coprime	32592
special_primes	39416
elldouble	40073
ifac_delete	45774
Z_factor_limit	49971
INIT	51708
moebiusu_fact	54194
moebius	55741
coreu	62994
is_pth_power	69282
maxomegau	71605
Z_oddprimedivisors_fast	126756
nextprime	126861
Z_factor_primes	127359
Z_oddprimedivisors_gcd	128036
aux_end	128188
Z_issmooth_fact	175970
get_rule	208727
ecm_elladd	234487
ecm_elladd0	240431
absZ_factor_limit	290994
is_kth_power	470911
STOREu	681371
core	709547
STORE	712688
u_oddprimedivisors_gcd	808527
tridiv_bound	869620
absZ_factor_limit_strict	887225
factoru_primes	916393
unextprime_overflow	992097
unextprime	1129186
uis_357_power	2366973
uis_357_powermod	2422104
moebiusu	2480474
is_357_power	2801676
absZ_factor	3277223
factoru	3749067
check_res	3928868
tridiv_boundu	4366890
snextpr	4531317
FpE_add_i	8291496
Z_factor	9507669
ifactor	9567977
ifactor_sign	14026248
u_357_divides	15812327
factoru_result	17215388
factoru_sign	17647777
one_iter	28254792
matsmalltrunc_init	38831359
matsmalltrunc_append	99672666
u_forprime_next_fast	142983864

Generated by: LCOV version 1.16