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 30387-12623f1693) Lines: 1826 2230 81.9 % Date: 2025-07-11 09:22:46 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	51764
SHALLOWCOPY	0
STORE	700920
STOREi	27777
STOREu	672991
ZV_aff	25650
Z_ECM	0
Z_factor	9802311
Z_factor_limit	55021
Z_factor_primes	124043
Z_factor_until	3045
Z_issmooth	0
Z_issmooth_fact	175471
Z_oddprimedivisors_fast	123440
Z_oddprimedivisors_gcd	124720
Z_pollardbrent	0
Z_pval_inplace	765
Z_to_Up	14
Zn_ispower	756
Zp_ispower	798
absZ_factor	3336920
absZ_factor_limit	287703
absZ_factor_limit_strict	895444
aux_end	124868
check_res	3927775
core	709547
core_init_from_squarefree	327
coreu	62994
coreu_fact	0
coreu_init_from_squarefree	247
diviiexact_inplace	1883
dvdii_inplace	219
ecm_elladd	234487
ecm_elladd0	240431
ecm_elladd2	7194
elldouble	40073
ellfacteur	3255
ellmult	25650
factorint	10290
factoru	3802609
factoru_primes	912703
factoru_result	17610129
factoru_sign	18069008
get_rule	208727
ifac_GC	0
ifac_check	0
ifac_checkprime	11267
ifac_core	353
ifac_crack	5783
ifac_decomp	2562
ifac_defrag	14
ifac_delete	45823
ifac_divide	9829
ifac_factor_dbg	0
ifac_factoru	863
ifac_find	15269
ifac_insert_multiplet	3272
ifac_ispowerful	7
ifac_isprime	28003
ifac_main	14189
ifac_moebius	236
ifac_moebiusu	663
ifac_next	6645
ifac_print	0
ifac_read	760
ifac_realloc	0
ifac_resort	7
ifac_skip	320
ifac_sort_one	7
ifac_start	2509
ifac_start_hint	5934
ifac_whoiswho	5788
ifactor	9867636
ifactor_sign	14390509
is_357_power	2800881
is_kth_power	479221
is_pth_power	68516
ispowerful	1708
matsmalltrunc_append	102903896
matsmalltrunc_init	40111006
maxomegaoddu	2316
maxomegau	71799
moebius	57792
moebiusu	2489695
moebiusu_fact	54194
nextprime	130781
one_iter	28254392
pollardbrent	3482
pollardbrent_i	802
precprime	56
radicalu	0
rho_dbg	0
snextpr	4531317
special_primes	36023
squfof	5113
squfof_ambig	2091
tridiv_bound	869568
tridiv_boundu	4373512
u_357_divides	16058351
u_forprime_next_fast	142499884
u_oddprimedivisors_gcd	808125
uis_357_power	2366932
uis_357_powermod	2421400
uis_357_powermod_32bit_1	14314
uis_357_powermod_32bit_2	846
uisprime_nosmall	7855
unextprime	1136784
unextprime_overflow	999220
update_pow	866
uprecprime	38
vecfactoroddu	0
vecfactoroddu_i	2316
vecfactorsquarefreeu	7014
vecfactorsquarefreeu_coprime	32742
vecfactoru	0
vecfactoru_i	31967
vecsquarefreeu	49

Generated by: LCOV version 1.16