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: 2025-08-05 09:23:54 Functions: 107 122 87.7 % 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
ifac_ispowerful	7
ifac_resort	7
ifac_sort_one	7
Z_to_Up	14
ifac_defrag	14
uprecprime	38
vecsquarefreeu	49
precprime	56
ECM_alloc	57
ECM_init	57
ECM_loop	93
dvdii_inplace	219
ifac_moebius	236
coreu_init_from_squarefree	247
ifac_skip	320
core_init_from_squarefree	327
ifac_core	353
ifac_moebiusu	663
Zn_ispower	756
ifac_read	760
Z_pval_inplace	765
Zp_ispower	798
pollardbrent_i	802
uis_357_powermod_32bit_2	846
ifac_factoru	877
update_pow	880
ispowerful	1708
diviiexact_inplace	1890
squfof_ambig	2098
maxomegaoddu	2240
vecfactoroddu_i	2240
ifac_start	2523
ifac_decomp	2562
Z_factor_until	3045
ellfacteur	3262
ifac_insert_multiplet	3279
pollardbrent	3489
squfof	5127
ifac_crack	5811
ifac_whoiswho	5816
ifac_start_hint	5962
ifac_next	6687
vecfactorsquarefreeu	7014
ecm_elladd2	7194
uisprime_nosmall	7869
ifac_divide	9857
factorint	10290
ifac_checkprime	11316
ifac_main	14231
uis_357_powermod_32bit_1	14328
ifac_find	15311
ZV_aff	25650
ellmult	25650
STOREi	27779
ifac_isprime	28059
vecfactoru_i	31965
vecfactorsquarefreeu_coprime	32759
special_primes	36032
elldouble	40073
ifac_delete	46019
INIT	51988
moebiusu_fact	54194
Z_factor_limit	55356
moebius	57581
coreu	63008
is_pth_power	68601
maxomegau	71815
nextprime	130781
Z_oddprimedivisors_fast	141408
Z_factor_primes	142011
Z_oddprimedivisors_gcd	142688
aux_end	142838
Z_issmooth_fact	175490
get_rule	208727
ecm_elladd	234487
ecm_elladd0	240431
absZ_factor_limit	287691
is_kth_power	479965
core	709557
STOREu	737008
STORE	764939
u_oddprimedivisors_gcd	876755
tridiv_bound	887540
absZ_factor_limit_strict	895451
unextprime_overflow	999205
factoru_primes	999284
unextprime	1137976
uis_357_power	2366984
uis_357_powermod	2421493
moebiusu	2486601
is_357_power	2800988
absZ_factor	3780940
factoru	3812119
check_res	3927942
snextpr	4531317
tridiv_boundu	4587613
FpE_add_i	8291496
Z_factor	10253444
ifactor	10319120
ifactor_sign	15286096
u_357_divides	16755433
factoru_result	18497204
factoru_sign	18956001
one_iter	28241331
matsmalltrunc_init	38554634
matsmalltrunc_append	98401190
u_forprime_next_fast	143939267

Generated by: LCOV version 1.16