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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31084-0f5a08ee7e) Lines: 81.1 % 2319 1881 Test Date: 2026-07-31 17:02:10 Functions: 88.2 % 127 112 Legend: Lines:     hit not hit

Function Name	Hit count
COPY	0
ECM_alloc	75
ECM_init	75
ECM_loop	129
FpE_add_i	11166024
INIT	51698
SHALLOWCOPY	0
STORE	765032
STOREi	27791
STOREu	737089
ZV_aff	35508
Z_ECM	0
Z_factor	10535803
Z_factor_limit	55145
Z_factor_primes	162729
Z_factor_until	3045
Z_has_prime_3mod4	61152
Z_has_prime_3mod4_i	61152
Z_issmooth	0
Z_issmooth_fact	177091
Z_oddprimedivisors_fast	141133
Z_oddprimedivisors_gcd	163861
Z_pollardbrent	0
Z_pval_inplace	762
Z_to_Up	35
Zn_ispower	791
Zp_ispower	861
absZ_factor	3896735
absZ_factor_limit	288696
absZ_factor_limit_strict	898102
aux_end	142569
check_res	3921048
core	712998
core_init_from_squarefree	327
coreu	66431
coreu_fact	0
coreu_init_from_squarefree	247
diviiexact_inplace	1838
dvdii_inplace	231
ecm_elladd	324079
ecm_elladd0	332231
ecm_elladd2	9966
elldouble	55433
ellfacteur	3286
ellmult	35508
factorint	10290
factoru	3799608
factoru_is_2357_power	1071
factoru_is_2357_power_special	6
factoru_primes	1085854
factoru_result	18885530
factoru_sign	19344778
get_rule	288305
ifac_GC	0
ifac_check	0
ifac_checkprime	11262
ifac_core	353
ifac_crack	5791
ifac_decomp	2600
ifac_defrag	14
ifac_delete	45761
ifac_divide	9791
ifac_factor_dbg	0
ifac_factoru	807
ifac_find	15213
ifac_insert_multiplet	3297
ifac_ispowerful	7
ifac_isprime	28060
ifac_main	14133
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	5930
ifac_whoiswho	5796
ifactor	10601224
ifactor_sign	15687739
is_357_power	2796811
is_kth_power	418924
is_pth_power	64318
ispowerful	1708
matsmalltrunc_append	180978665
matsmalltrunc_init	72639328
maxomegaoddu	5610
maxomegau	71528
moebius	64892
moebiusu	2593157
moebiusu_fact	54194
nextprime	130788
nextprime0	119154
one_iter	36873146
pollardbrent	3525
pollardbrent_i	838
precprime	56
radicalu	0
rho_dbg	0
snextpr	6162411
special_primes	36107
squfof	5093
squfof_ambig	2007
tridiv_bound	911744
tridiv_boundu	4823704
u_357_divides	17251161
u_forprime_next_fast	146960415
u_oddprimedivisors_gcd	942656
uis_357_power	2366979
uis_357_powermod	2417927
uis_357_powermod_32bit_1	13733
uis_357_powermod_32bit_2	836
uisprime_nosmall	8605
unextprime	1156455
unextprime_overflow	1018406
update_pow	908
uprecprime	38
vecfactoroddu	0
vecfactoroddu_i	5610
vecfactorsquarefreeu	7014
vecfactorsquarefreeu_coprime	32699
vecfactoru	0
vecfactoru_i	31738
vecsquarefreeu	49

Generated by: LCOV version 2.0-1