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: 1827 2230 81.9 % Date: 2025-06-02 09:19:41 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	327
core_init_from_squarefree	334
ifac_core	360
ifac_moebiusu	663
Zn_ispower	756
Z_pval_inplace	768
ifac_read	774
Zp_ispower	798
pollardbrent_i	802
uis_357_powermod_32bit_2	834
ifac_factoru	863
update_pow	866
ispowerful	1708
diviiexact_inplace	1883
squfof_ambig	2091
maxomegaoddu	2159
vecfactoroddu_i	2159
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	13833
ifac_main	14189
ifac_find	15290
ZV_aff	25650
ellmult	25650
STOREi	27778
ifac_isprime	28010
vecfactoru_i	31967
vecfactorsquarefreeu_coprime	32571
special_primes	36024
elldouble	40073
ifac_delete	45872
Z_factor_limit	49493
INIT	51820
moebiusu_fact	54194
moebius	58255
coreu	62994
is_pth_power	65134
maxomegau	71629
Z_oddprimedivisors_fast	123396
Z_factor_primes	123999
Z_oddprimedivisors_gcd	124683
aux_end	124825
nextprime	130781
Z_issmooth_fact	176609
get_rule	208727
ecm_elladd	234487
ecm_elladd0	240431
absZ_factor_limit	287380
is_kth_power	429963
STOREu	672787
STORE	700717
core	709558
u_oddprimedivisors_gcd	808069
tridiv_bound	869589
absZ_factor_limit_strict	887164
factoru_primes	912600
unextprime_overflow	997834
unextprime	1134423
uis_357_power	2366946
uis_357_powermod	2418511
moebiusu	2490539
is_357_power	2797505
absZ_factor	3276519
factoru	3752118
check_res	3922458
tridiv_boundu	4366841
snextpr	4531317
FpE_add_i	8291496
Z_factor	9504276
ifactor	9564115
ifactor_sign	14018042
u_357_divides	15816155
factoru_result	17213791
factoru_sign	17645945
one_iter	28253142
matsmalltrunc_init	38172586
matsmalltrunc_append	98722402
u_forprime_next_fast	142262561

Generated by: LCOV version 1.16