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 30446-bebd557ed6) Lines: 1826 2230 81.9 % Date: 2025-08-06 09:23:53 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	51988
SHALLOWCOPY	0
STORE	764942
STOREi	27779
STOREu	737011
ZV_aff	25650
Z_ECM	0
Z_factor	10253438
Z_factor_limit	55356
Z_factor_primes	142008
Z_factor_until	3045
Z_issmooth	0
Z_issmooth_fact	175759
Z_oddprimedivisors_fast	141405
Z_oddprimedivisors_gcd	142685
Z_pollardbrent	0
Z_pval_inplace	765
Z_to_Up	14
Zn_ispower	756
Zp_ispower	798
absZ_factor	3780813
absZ_factor_limit	287679
absZ_factor_limit_strict	895452
aux_end	142835
check_res	3927975
core	709566
core_init_from_squarefree	327
coreu	63008
coreu_fact	0
coreu_init_from_squarefree	247
diviiexact_inplace	1890
dvdii_inplace	219
ecm_elladd	234487
ecm_elladd0	240431
ecm_elladd2	7194
elldouble	40073
ellfacteur	3262
ellmult	25650
factorint	10290
factoru	3812186
factoru_primes	999280
factoru_result	18497204
factoru_sign	18955920
get_rule	208727
ifac_GC	0
ifac_check	0
ifac_checkprime	11316
ifac_core	353
ifac_crack	5811
ifac_decomp	2562
ifac_defrag	14
ifac_delete	46019
ifac_divide	9857
ifac_factor_dbg	0
ifac_factoru	877
ifac_find	15311
ifac_insert_multiplet	3279
ifac_ispowerful	7
ifac_isprime	28059
ifac_main	14231
ifac_moebius	236
ifac_moebiusu	663
ifac_next	6687
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	5962
ifac_whoiswho	5816
ifactor	10319121
ifactor_sign	15285923
is_357_power	2801001
is_kth_power	480267
is_pth_power	68619
ispowerful	1708
matsmalltrunc_append	98250357
matsmalltrunc_init	38494931
maxomegaoddu	2199
maxomegau	71815
moebius	58171
moebiusu	2485399
moebiusu_fact	54194
nextprime	130781
one_iter	28244866
pollardbrent	3489
pollardbrent_i	802
precprime	56
radicalu	0
rho_dbg	0
snextpr	4531317
special_primes	36032
squfof	5127
squfof_ambig	2098
tridiv_bound	887538
tridiv_boundu	4587829
u_357_divides	16755842
u_forprime_next_fast	143858595
u_oddprimedivisors_gcd	876755
uis_357_power	2366985
uis_357_powermod	2421507
uis_357_powermod_32bit_1	14328
uis_357_powermod_32bit_2	846
uisprime_nosmall	7869
unextprime	1137977
unextprime_overflow	999209
update_pow	880
uprecprime	38
vecfactoroddu	0
vecfactoroddu_i	2199
vecfactorsquarefreeu	7014
vecfactorsquarefreeu_coprime	32757
vecfactoru	0
vecfactoru_i	31967
vecsquarefreeu	49

Generated by: LCOV version 1.16