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 - arith1.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30651-3e52073f6d) Lines: 2080 2301 90.4 % Date: 2026-01-28 09:23:10 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
ECP_psi	837
Fl_2gener_pre	188792
Fl_2gener_pre_i	65849
Fl_2powu	4358625
Fl_2powu_pre	12890640
Fl_lgener_pre_all	147066
Fl_log	132360
Fl_log_Fp	0
Fl_log_naive	132361
Fl_log_naive_pre	29015
Fl_log_pre	29413
Fl_order	546541
Fl_powers	296050
Fl_powers_pre	13055251
Fl_powu	141465685
Fl_powu_pre	166263967
Fl_sqrt	12403619
Fl_sqrt_i	12525733
Fl_sqrt_pre	23353092
Fl_sqrt_pre_i	35950177
Fl_sqrtl	0
Fl_sqrtl_pre	230038
Fl_sqrtl_raw	233000
Fl_sqrtn	233409
Fl_sqrtn_pre	233409
FpV_prod	497
Fp_2gener	3222
Fp_2gener_all	5909
Fp_2gener_i	19392
Fp_easylog	8819509
Fp_factored_order	70
Fp_gausssum	351
Fp_invgen	6095258
Fp_invmBarrett	14036
Fp_log	4259588
Fp_log_find_ind	126
Fp_log_find_rel	126
Fp_log_halfgcd	56581
Fp_log_index	63
Fp_log_sieve	63
Fp_log_sieve_worker	30253
Fp_log_use_index	5039740
Fp_order	136408
Fp_pow	37752966
Fp_pow_init	105
Fp_pow_table	43694
Fp_powers	5931
Fp_pows	1346195
Fp_powu	1754383
Fp_rem_mBarrett	8296561
Fp_rootsof1	820
Fp_select_red	869546
Fp_sqrt	4844638
Fp_sqrt_i	4898329
Fp_sqrt_ii	75184
Fp_sqrtn	173541
Fp_sqrts	18951
Qsfcont	3137414
ZMV_producttree	0
ZM_nv_mod_tree	215600
ZM_nv_mod_tree_t	221057
ZT_sqr	13609698
ZVV_nv_mod_tree	5457
ZV_allpnqn	894831
ZV_chinese	5141
ZV_chinese_center	156865
ZV_chinese_tree	40779077
ZV_chinesetree	2630152
ZV_invdivexact	2630150
ZV_nv_mod_tree	1235220
ZV_producttree	2634003
ZV_sqr	2630159
ZXC_nv_mod_tree	5632
ZXM_nv_mod_tree	491
ZXX_nv_mod_tree	254487
ZX_nv_mod_tree	3100247
Z_ZV_mod	0
Z_ZV_mod_tree	58142618
Z_chinese	2142
Z_chinese_all	268122
Z_chinese_coprime	546819
Z_chinese_post	3072476
Z_chinese_pre	271843
Z_factor_listP	350651
Z_nv_mod	0
Zp_order	70
_Fp_add	1175565
_Fp_equal0	260724
_Fp_inv	34307
_Fp_mul	14228585
_Fp_neg	1086846
_Fp_one	47162
_Fp_pow	28603484
_Fp_rand	160
_Fp_red	889913
_Fp_rmul	575346
_Fp_s	19075
_Fp_sqr	8134253
_computeG	837
_gc_upto	112
_mul2_montred	9357151
_mul2_remii	3516018
_mul2_remiibar	1797854
_mul_montred	6664237
_mul_remii	1482140
_mul_remiibar	717268
_psi	1714
_sqr_montred	62979322
_sqr_remii	23289226
_sqr_remiibar	7579293
addifsmooth1	2163
addifsmooth2	83825
bestappr	105607
bestapprPade	119
bestapprPade0	126
bestappr_Q	2285797
bestappr_RgX	119
bestappr_frac	7
bestappr_real	1267519
bestappr_ser	98
check_kernel	63
checkp	2581536
chinese	5495
chinese1	2415
chinese1_coprime_Z	2460694
chinese1_coprime_Z_aux	2253538
compute_nbgen	63
contfrac0	49
contfracpnqn	266
err_oo	56
err_p	161
err_prec	196
factorial_Fl	56774
factorial_Fp	186
fibo	7
gboundcf	3142391
gc_chinese	980247
gc_empty	42
gcf	126
gcf2	0
gen_chinese	2463109
gener_Zp	259
get_Fp_field	6963
get_PHI	98
gome	5846407
hilbert	62314
hilbertii	140826
icopy_lg	3137064
init_montdata	661615
intmod2polmod	21
is_gener_Fl	1662328
is_gener_Fp	13956
is_gener_expo	4909
istotient	70000
istotient_i	621565
krois	40089
kroiu	27627182
kronecker	12750917
krosi	159682
kross	100335621
kroui	35683
krouodd	195365
krouu	102545337
krouu_s	235322086
lcmii	54519467
lift_intmod	420
lift_padic	210
lucas	56
mod_to_frac	42
mod_to_rfrac	112
mpfact	498560
mphilbertoo	7329
mpprimorial	105
muls_interval	595
mulu_interval	159074
mulu_interval_step	92745
ncV_chinese_center	10333
ncV_chinese_center_tree	5457
ncV_polint_center_tree	1512567
nmV_chinese_center	378490
nmV_chinese_center_tree	0
nmV_chinese_center_tree_seq	120533
nmV_polint_center_tree	378490
nmV_polint_center_tree_seq	120532
nmV_polint_center_tree_worker	973224
nonsquare1_Fl	12031512
nonsquare_Fl	7930
nonsquare_Fp	1458
nxCV_chinese_center	0
nxCV_chinese_center_tree	0
nxCV_polint_center_tree	6585
nxMV_chinese_center	104
nxMV_chinese_center_tree_seq	491
nxMV_polint_center_tree	104
nxMV_polint_center_tree_seq	491
nxMV_polint_center_tree_worker	1225
nxV_chinese_center	429313
nxV_chinese_center_tree	303805
nxV_polint_center_tree	875573
odd_prime_divisors	1812
ome	334338322
opt_param	63
padic2mod	21
pgener_Fl	574915
pgener_Fl_local	1080978
pgener_Fp	44282
pgener_Fp_local	412316
pgener_Zl	205549
pgener_Zp	170793
pnqn	0
polint_chinese	378594
remove2	1812
rootsof1_Fl	215524
rootsof1_Fp	0
rootsof1u_Fp	3033
rt	169813
serPade	49
sersfcont	0
sfcont2	14
sqrt_Cipolla	0
sqrt_Cipolla_msqr	0
sqrt_Cipolla_sqr	0
to_ZX	1889408
tr	59731
u_chinese_coprime	1638894
u_chinese_post	1638920
u_is_gener_expo	544975
u_odd_prime_divisors	463936
u_remove2	463936
znlog	238
znlog_rec	126
znorder	63
znprimroot	329

Generated by: LCOV version 1.16