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 30605-980f9eb85c) Lines: 1861 2294 81.1 % Date: 2026-01-11 09:21:30 Functions: 111 126 88.1 % 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	765637
STOREi	27797
STOREu	737688
ZV_aff	25650
Z_ECM	0
Z_factor	10194465
Z_factor_limit	55350
Z_factor_primes	163077
Z_factor_until	3045
Z_has_prime_3mod4	61152
Z_has_prime_3mod4_i	61152
Z_issmooth	0
Z_issmooth_fact	175582
Z_oddprimedivisors_fast	141481
Z_oddprimedivisors_gcd	164209
Z_pollardbrent	0
Z_pval_inplace	762
Z_to_Up	14
Zn_ispower	756
Zp_ispower	798
absZ_factor	3844098
absZ_factor_limit	287393
absZ_factor_limit_strict	895426
aux_end	142917
check_res	3920881
core	709580
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	3797673
factoru_is_2357_power	1071
factoru_is_2357_power_special	6
factoru_primes	1052556
factoru_result	18487330
factoru_sign	18945286
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	10260160
ifactor_sign	15289981
is_357_power	2796722
is_kth_power	414447
is_pth_power	64269
ispowerful	1708
matsmalltrunc_append	99847640
matsmalltrunc_init	39053257
maxomegaoddu	2188
maxomegau	71733
moebius	61076
moebiusu	2502615
moebiusu_fact	54194
nextprime	130788
one_iter	28250843
pollardbrent	3489
pollardbrent_i	802
precprime	56
radicalu	0
rho_dbg	0
snextpr	4531317
special_primes	36078
squfof	5057
squfof_ambig	2007
tridiv_bound	909040
tridiv_boundu	4668140
u_357_divides	16799219
u_forprime_next_fast	144195355
u_oddprimedivisors_gcd	909004
uis_357_power	2366958
uis_357_powermod	2417840
uis_357_powermod_32bit_1	13730
uis_357_powermod_32bit_2	837
uisprime_nosmall	6720
unextprime	1138165
unextprime_overflow	1000176
update_pow	908
uprecprime	38
vecfactoroddu	0
vecfactoroddu_i	2188
vecfactorsquarefreeu	7014
vecfactorsquarefreeu_coprime	32676
vecfactoru	0
vecfactoru_i	31967
vecsquarefreeu	49

Generated by: LCOV version 1.16