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 30561-4f4869c0e7) Lines: 1826 2230 81.9 % Date: 2025-11-28 09:21:39 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	51470
SHALLOWCOPY	0
STORE	764995
STOREi	27793
STOREu	737050
ZV_aff	25650
Z_ECM	0
Z_factor	10264085
Z_factor_limit	55362
Z_factor_primes	142033
Z_factor_until	3045
Z_issmooth	0
Z_issmooth_fact	175980
Z_oddprimedivisors_fast	141430
Z_oddprimedivisors_gcd	142710
Z_pollardbrent	0
Z_pval_inplace	765
Z_to_Up	14
Zn_ispower	756
Zp_ispower	798
absZ_factor	3768360
absZ_factor_limit	287698
absZ_factor_limit_strict	895452
aux_end	142860
check_res	3927918
core	709574
core_init_from_squarefree	327
coreu	63022
coreu_fact	0
coreu_init_from_squarefree	247
diviiexact_inplace	1820
dvdii_inplace	219
ecm_elladd	234487
ecm_elladd0	240431
ecm_elladd2	7194
elldouble	40073
ellfacteur	3262
ellmult	25650
factorint	10290
factoru	3814404
factoru_primes	994660
factoru_result	18497156
factoru_sign	18956265
get_rule	208727
ifac_GC	0
ifac_check	0
ifac_checkprime	11190
ifac_core	353
ifac_crack	5755
ifac_decomp	2576
ifac_defrag	14
ifac_delete	45557
ifac_divide	9731
ifac_factor_dbg	0
ifac_factoru	807
ifac_find	15129
ifac_insert_multiplet	3279
ifac_ispowerful	7
ifac_isprime	27962
ifac_main	14049
ifac_moebius	236
ifac_moebiusu	663
ifac_next	6477
ifac_print	0
ifac_read	760
ifac_realloc	0
ifac_resort	7
ifac_skip	320
ifac_sort_one	7
ifac_start	2523
ifac_start_hint	5906
ifac_whoiswho	5760
ifactor	10329822
ifactor_sign	15284253
is_357_power	2800971
is_kth_power	480503
is_pth_power	68581
ispowerful	1708
matsmalltrunc_append	99063757
matsmalltrunc_init	39067266
maxomegaoddu	2420
maxomegau	71816
moebius	57891
moebiusu	2490151
moebiusu_fact	54194
nextprime	130788
one_iter	28268201
pollardbrent	3489
pollardbrent_i	802
precprime	56
radicalu	0
rho_dbg	0
snextpr	4531317
special_primes	36060
squfof	5057
squfof_ambig	2007
tridiv_bound	887541
tridiv_boundu	4584168
u_357_divides	16753606
u_forprime_next_fast	143954140
u_oddprimedivisors_gcd	872111
uis_357_power	2366925
uis_357_powermod	2421471
uis_357_powermod_32bit_1	14333
uis_357_powermod_32bit_2	847
uisprime_nosmall	6727
unextprime	1138496
unextprime_overflow	999727
update_pow	908
uprecprime	38
vecfactoroddu	0
vecfactoroddu_i	2420
vecfactorsquarefreeu	7014
vecfactorsquarefreeu_coprime	32759
vecfactoru	0
vecfactoru_i	31966
vecsquarefreeu	49

Generated by: LCOV version 1.16