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 v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 81.1 % 2319 1881 Test Date: 2026-07-23 17:04:59 Functions: 88.2 % 127 112 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
factoru_is_2357_power_special	6
ifac_ispowerful	7
ifac_resort	7
ifac_sort_one	7
ifac_defrag	14
Z_to_Up	35
uprecprime	38
vecsquarefreeu	49
precprime	56
ECM_alloc	75
ECM_init	75
ECM_loop	129
dvdii_inplace	231
ifac_moebius	236
coreu_init_from_squarefree	247
ifac_skip	320
core_init_from_squarefree	327
ifac_core	353
ifac_moebiusu	663
ifac_read	760
Z_pval_inplace	762
Zn_ispower	791
ifac_factoru	807
uis_357_powermod_32bit_2	836
pollardbrent_i	838
Zp_ispower	861
update_pow	908
factoru_is_2357_power	1071
ispowerful	1708
diviiexact_inplace	1838
squfof_ambig	2007
ifac_start	2523
ifac_decomp	2600
Z_factor_until	3045
ellfacteur	3286
ifac_insert_multiplet	3297
pollardbrent	3525
squfof	5093
maxomegaoddu	5524
vecfactoroddu_i	5524
ifac_crack	5791
ifac_whoiswho	5796
ifac_start_hint	5930
ifac_next	6477
vecfactorsquarefreeu	7014
uisprime_nosmall	8605
ifac_divide	9791
ecm_elladd2	9966
factorint	10290
ifac_checkprime	11262
uis_357_powermod_32bit_1	13733
ifac_main	14133
ifac_find	15213
STOREi	27791
ifac_isprime	28060
vecfactoru_i	31738
vecfactorsquarefreeu_coprime	32699
ZV_aff	35508
ellmult	35508
special_primes	36107
ifac_delete	45761
INIT	51698
moebiusu_fact	54194
Z_factor_limit	55147
elldouble	55433
Z_has_prime_3mod4	61152
Z_has_prime_3mod4_i	61152
is_pth_power	64326
moebius	64892
coreu	66431
maxomegau	71528
nextprime0	119154
nextprime	130788
Z_oddprimedivisors_fast	141120
aux_end	142556
Z_factor_primes	162716
Z_oddprimedivisors_gcd	163848
Z_issmooth_fact	176203
get_rule	288305
absZ_factor_limit	288688
ecm_elladd	324079
ecm_elladd0	332231
is_kth_power	418986
core	712998
STOREu	737045
STORE	764988
absZ_factor_limit_strict	898102
tridiv_bound	911740
u_oddprimedivisors_gcd	942655
unextprime_overflow	1018149
factoru_primes	1085840
unextprime	1156196
uis_357_power	2366979
uis_357_powermod	2417935
moebiusu	2593157
is_357_power	2796819
factoru	3799624
absZ_factor	3896743
check_res	3921063
tridiv_boundu	4823677
snextpr	6162411
Z_factor	10535839
ifactor	10601262
FpE_add_i	11166024
ifactor_sign	15687777
u_357_divides	17251206
factoru_result	18885597
factoru_sign	19344845
one_iter	36873146
matsmalltrunc_init	71952103
u_forprime_next_fast	146795208
matsmalltrunc_append	179358782

Generated by: LCOV version 2.0-1