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 30775-9d8a55740a) Lines: 2080 2301 90.4 % Date: 2026-04-06 09:26:18 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
ECP_psi	837
Fl_2gener_pre	188812
Fl_2gener_pre_i	65848
Fl_2powu	4988952
Fl_2powu_pre	12892498
Fl_lgener_pre_all	147047
Fl_log	132357
Fl_log_Fp	0
Fl_log_naive	132357
Fl_log_naive_pre	28948
Fl_log_pre	29346
Fl_order	546586
Fl_powers	296050
Fl_powers_pre	13050034
Fl_powu	144668303
Fl_powu_pre	165989773
Fl_sqrt	14768582
Fl_sqrt_i	14891163
Fl_sqrt_pre	23335200
Fl_sqrt_pre_i	38295359
Fl_sqrtl	0
Fl_sqrtl_pre	229915
Fl_sqrtl_raw	232875
Fl_sqrtn	233408
Fl_sqrtn_pre	233409
FpV_prod	497
Fp_2gener	3222
Fp_2gener_all	5909
Fp_2gener_i	19392
Fp_easylog	8819469
Fp_factored_order	70
Fp_gausssum	351
Fp_invgen	6098175
Fp_invmBarrett	14032
Fp_log	4259579
Fp_log_find_ind	126
Fp_log_find_rel	126
Fp_log_halfgcd	55996
Fp_log_index	63
Fp_log_sieve	63
Fp_log_sieve_worker	30256
Fp_log_use_index	5039786
Fp_order	136403
Fp_pow	37752723
Fp_pow_init	105
Fp_pow_table	43694
Fp_powers	5931
Fp_pows	1346265
Fp_powu	1900594
Fp_rem_mBarrett	8294973
Fp_rootsof1	820
Fp_select_red	903494
Fp_sqrt	4843897
Fp_sqrt_i	4897592
Fp_sqrt_ii	75164
Fp_sqrtn	173541
Fp_sqrts	18946
Qsfcont	3137414
ZMV_producttree	0
ZM_nv_mod_tree	215666
ZM_nv_mod_tree_t	221123
ZT_sqr	13618400
ZVV_nv_mod_tree	5457
ZV_allpnqn	894831
ZV_chinese	5141
ZV_chinese_center	156945
ZV_chinese_tree	40784553
ZV_chinesetree	2632971
ZV_invdivexact	2632978
ZV_nv_mod_tree	1236304
ZV_producttree	2636840
ZV_sqr	2632978
ZXC_nv_mod_tree	5634
ZXM_nv_mod_tree	491
ZXX_nv_mod_tree	254553
ZX_nv_mod_tree	3103307
Z_ZV_mod	0
Z_ZV_mod_tree	58199798
Z_chinese	2142
Z_chinese_all	268076
Z_chinese_coprime	546153
Z_chinese_post	3071779
Z_chinese_pre	271800
Z_factor_listP	350651
Z_nv_mod	0
Zp_order	70
_Fp_add	1175565
_Fp_equal0	260724
_Fp_inv	34307
_Fp_mul	14228169
_Fp_neg	1086846
_Fp_one	47162
_Fp_pow	28603348
_Fp_rand	160
_Fp_red	889913
_Fp_rmul	575346
_Fp_s	19075
_Fp_sqr	8134253
_computeG	837
_gc_upto	112
_mul2_montred	9361800
_mul2_remii	3524160
_mul2_remiibar	1797049
_mul_montred	6701747
_mul_remii	1472349
_mul_remiibar	717266
_psi	1714
_sqr_montred	63145878
_sqr_remii	23487418
_sqr_remiibar	7577707
addifsmooth1	2163
addifsmooth2	83825
bestappr	106335
bestapprPade	119
bestapprPade0	126
bestappr_Q	2290969
bestappr_RgX	119
bestappr_frac	7
bestappr_real	1269211
bestappr_ser	98
check_kernel	63
checkp	2689737
chinese	5495
chinese1	2415
chinese1_coprime_Z	2460683
chinese1_coprime_Z_aux	2253538
compute_nbgen	63
contfrac0	49
contfracpnqn	266
err_oo	56
err_p	161
err_prec	196
factorial_Fl	57081
factorial_Fp	186
fibo	7
gboundcf	3142391
gc_chinese	980162
gc_empty	42
gcf	126
gcf2	0
gen_chinese	2463096
gener_Zp	259
get_Fp_field	6963
get_PHI	98
gome	5922073
hilbert	62314
hilbertii	140826
icopy_lg	3137064
init_montdata	694458
intmod2polmod	21
is_gener_Fl	1662505
is_gener_Fp	13976
is_gener_expo	4909
istotient	70000
istotient_i	621565
krois	40089
kroiu	37721324
kronecker	12777626
krosi	159682
kross	100423600
kroui	35701
krouodd	195382
krouu	103376914
krouu_s	246321173
lcmii	54661865
lift_intmod	420
lift_padic	210
lucas	56
mod_to_frac	42
mod_to_rfrac	112
mpfact	500317
mphilbertoo	7329
mpprimorial	105
muls_interval	595
mulu_interval	159068
mulu_interval_step	92769
ncV_chinese_center	10333
ncV_chinese_center_tree	5457
ncV_polint_center_tree	1514940
nmV_chinese_center	378490
nmV_chinese_center_tree	0
nmV_chinese_center_tree_seq	120577
nmV_polint_center_tree	378490
nmV_polint_center_tree_seq	120578
nmV_polint_center_tree_worker	974597
nonsquare1_Fl	13097789
nonsquare_Fl	7935
nonsquare_Fp	1457
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	429150
nxV_chinese_center_tree	303860
nxV_polint_center_tree	875413
odd_prime_divisors	1812
ome	347962104
opt_param	63
padic2mod	21
pgener_Fl	575211
pgener_Fl_local	1081266
pgener_Fp	44282
pgener_Fp_local	412303
pgener_Zl	205829
pgener_Zp	171073
pnqn	0
polint_chinese	378594
remove2	1812
rootsof1_Fl	215523
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	1889694
tr	59731
u_chinese_coprime	1640482
u_chinese_post	1640507
u_is_gener_expo	544998
u_odd_prime_divisors	463956
u_remove2	463957
znlog	238
znlog_rec	126
znorder	63
znprimroot	329

Generated by: LCOV version 1.16