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 30316-0578a48613) Lines: 1826 2230 81.9 % Date: 2025-06-03 09:18:42 Functions: 107 122 87.7 % Legend: Lines: hit not hit

Function Name	Hit count
COPY	0
ECM_alloc	57
ECM_init	57
ECM_loop	93
FpE_add_i	8291496
INIT	51820
SHALLOWCOPY	0
STORE	700700
STOREi	27778
STOREu	672770
ZV_aff	25650
Z_ECM	0
Z_factor	9504277
Z_factor_limit	49497
Z_factor_primes	123989
Z_factor_until	3045
Z_issmooth	0
Z_issmooth_fact	175357
Z_oddprimedivisors_fast	123385
Z_oddprimedivisors_gcd	124673
Z_pollardbrent	0
Z_pval_inplace	768
Z_to_Up	14
Zn_ispower	756
Zp_ispower	798
absZ_factor	3276255
absZ_factor_limit	287361
absZ_factor_limit_strict	887116
aux_end	124815
check_res	3922425
core	709544
core_init_from_squarefree	334
coreu	62994
coreu_fact	0
coreu_init_from_squarefree	247
diviiexact_inplace	1883
dvdii_inplace	219
ecm_elladd	234487
ecm_elladd0	240431
ecm_elladd2	7194
elldouble	40073
ellfacteur	3255
ellmult	25650
factorint	10290
factoru	3752316
factoru_primes	912590
factoru_result	17213777
factoru_sign	17645904
get_rule	208727
ifac_GC	0
ifac_check	0
ifac_checkprime	11267
ifac_core	360
ifac_crack	5783
ifac_decomp	2562
ifac_defrag	14
ifac_delete	45872
ifac_divide	9829
ifac_factor_dbg	0
ifac_factoru	863
ifac_find	15290
ifac_insert_multiplet	3272
ifac_ispowerful	7
ifac_isprime	28010
ifac_main	14189
ifac_moebius	236
ifac_moebiusu	663
ifac_next	6645
ifac_print	0
ifac_read	774
ifac_realloc	0
ifac_resort	7
ifac_skip	327
ifac_sort_one	7
ifac_start	2516
ifac_start_hint	5941
ifac_whoiswho	5788
ifactor	9564113
ifactor_sign	14017744
is_357_power	2797490
is_kth_power	427095
is_pth_power	65106
ispowerful	1708
matsmalltrunc_append	101766331
matsmalltrunc_init	39771458
maxomegaoddu	2258
maxomegau	71625
moebius	57136
moebiusu	2472202
moebiusu_fact	54194
nextprime	130781
one_iter	28247984
pollardbrent	3482
pollardbrent_i	802
precprime	56
radicalu	0
rho_dbg	0
snextpr	4531317
special_primes	36024
squfof	5113
squfof_ambig	2091
tridiv_bound	869527
tridiv_boundu	4365341
u_357_divides	15806524
u_forprime_next_fast	142021936
u_oddprimedivisors_gcd	808067
uis_357_power	2366945
uis_357_powermod	2418494
uis_357_powermod_32bit_1	13833
uis_357_powermod_32bit_2	834
uisprime_nosmall	7861
unextprime	1134430
unextprime_overflow	997844
update_pow	866
uprecprime	38
vecfactoroddu	0
vecfactoroddu_i	2258
vecfactorsquarefreeu	7014
vecfactorsquarefreeu_coprime	32567
vecfactoru	0
vecfactoru_i	31967
vecsquarefreeu	49

Generated by: LCOV version 1.16