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 30499-74bdd0ac5b) Lines: 1826 2230 81.9 % Date: 2025-09-18 09:23:44 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
ifac_factoru	807
uis_357_powermod_32bit_2	846
update_pow	880
ispowerful	1708
diviiexact_inplace	1820
squfof_ambig	2007
maxomegaoddu	2416
vecfactoroddu_i	2416
ifac_start	2523
ifac_decomp	2562
Z_factor_until	3045
ellfacteur	3262
ifac_insert_multiplet	3279
pollardbrent	3489
squfof	5057
ifac_crack	5741
ifac_whoiswho	5746
ifac_start_hint	5892
ifac_next	6477
uisprime_nosmall	6721
vecfactorsquarefreeu	7014
ecm_elladd2	7194
ifac_divide	9717
factorint	10290
ifac_checkprime	11176
ifac_main	14021
uis_357_powermod_32bit_1	14328
ifac_find	15101
ZV_aff	25650
ellmult	25650
STOREi	27777
ifac_isprime	27918
vecfactoru_i	31966
vecfactorsquarefreeu_coprime	32762
special_primes	36030
elldouble	40073
ifac_delete	45459
INIT	51358
moebiusu_fact	54194
Z_factor_limit	55360
moebius	57048
coreu	63008
is_pth_power	68540
maxomegau	71819
nextprime	130781
Z_oddprimedivisors_fast	141417
Z_factor_primes	142020
Z_oddprimedivisors_gcd	142697
aux_end	142847
Z_issmooth_fact	175880
get_rule	208727
ecm_elladd	234487
ecm_elladd0	240431
absZ_factor_limit	287684
is_kth_power	480210
core	709564
STOREu	737062
STORE	764991
u_oddprimedivisors_gcd	872100
tridiv_bound	887519
absZ_factor_limit_strict	895440
factoru_primes	994636
unextprime_overflow	999243
unextprime	1138012
uis_357_power	2366913
uis_357_powermod	2421430
moebiusu	2489999
is_357_power	2800924
absZ_factor	3768254
factoru	3812233
check_res	3927837
snextpr	4531317
tridiv_boundu	4583115
FpE_add_i	8291496
Z_factor	10258773
ifactor	10324444
ifactor_sign	15278721
u_357_divides	16749874
factoru_result	18490116
factoru_sign	18948776
one_iter	28258798
matsmalltrunc_init	40211624
matsmalltrunc_append	103189208
u_forprime_next_fast	144119033

Generated by: LCOV version 1.16