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 30735-65f72320ad) Lines: 2080 2301 90.4 % Date: 2026-03-12 09:23:43 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_log_Fp	0
Fl_sqrtl	0
ZMV_producttree	0
Z_ZV_mod	0
Z_nv_mod	0
gcf2	0
nmV_chinese_center_tree	0
nxCV_chinese_center	0
nxCV_chinese_center_tree	0
pnqn	0
rootsof1_Fp	0
sersfcont	0
sqrt_Cipolla	0
sqrt_Cipolla_msqr	0
sqrt_Cipolla_sqr	0
bestappr_frac	7
fibo	7
sfcont2	14
intmod2polmod	21
padic2mod	21
gc_empty	42
mod_to_frac	42
contfrac0	49
serPade	49
err_oo	56
lucas	56
Fp_log_index	63
Fp_log_sieve	63
check_kernel	63
compute_nbgen	63
opt_param	63
znorder	63
Fp_factored_order	70
Zp_order	70
bestappr_ser	98
get_PHI	98
nxMV_chinese_center	104
nxMV_polint_center_tree	104
Fp_pow_init	105
mpprimorial	105
_gc_upto	112
mod_to_rfrac	112
bestapprPade	119
bestappr_RgX	119
Fp_log_find_ind	126
Fp_log_find_rel	126
bestapprPade0	126
gcf	126
znlog_rec	126
_Fp_rand	160
err_p	161
factorial_Fp	186
err_prec	196
lift_padic	210
znlog	238
gener_Zp	259
contfracpnqn	266
znprimroot	329
Fp_gausssum	351
lift_intmod	420
ZXM_nv_mod_tree	491
nxMV_chinese_center_tree_seq	491
nxMV_polint_center_tree_seq	491
FpV_prod	497
muls_interval	595
Fp_rootsof1	820
ECP_psi	837
_computeG	837
nxMV_polint_center_tree_worker	1225
nonsquare_Fp	1458
_psi	1714
odd_prime_divisors	1812
remove2	1812
Z_chinese	2142
addifsmooth1	2163
chinese1	2415
rootsof1u_Fp	3033
Fp_2gener	3222
is_gener_expo	4909
ZV_chinese	5141
ZVV_nv_mod_tree	5457
ncV_chinese_center_tree	5457
chinese	5495
ZXC_nv_mod_tree	5634
Fp_2gener_all	5909
Fp_powers	5931
nxCV_polint_center_tree	6585
get_Fp_field	6963
mphilbertoo	7329
nonsquare_Fl	7935
ncV_chinese_center	10333
is_gener_Fp	13987
Fp_invmBarrett	14032
Fp_sqrts	18946
_Fp_s	19075
Fp_2gener_i	19392
Fl_log_naive_pre	28951
Fl_log_pre	29349
Fp_log_sieve_worker	30257
_Fp_inv	34307
kroui	35714
krois	40089
Fp_pow_table	43694
pgener_Fp	44282
_Fp_one	47162
Fp_log_halfgcd	56784
factorial_Fl	57091
tr	59731
hilbert	62314
Fl_2gener_pre_i	65848
istotient	70000
Fp_sqrt_ii	75175
addifsmooth2	83825
mulu_interval_step	92836
bestappr	105591
nmV_chinese_center_tree_seq	120581
nmV_polint_center_tree_seq	120581
Fl_log	132362
Fl_log_naive	132362
Fp_order	136406
hilbertii	140826
Fl_lgener_pre_all	147041
ZV_chinese_center	156879
mulu_interval	159076
krosi	159682
rt	169813
pgener_Zp	171066
Fp_sqrtn	173541
Fl_2gener_pre	188796
krouodd	195396
pgener_Zl	205822
rootsof1_Fl	215523
ZM_nv_mod_tree	215663
ZM_nv_mod_tree_t	221120
Fl_sqrtl_pre	229867
Fl_sqrtl_raw	232825
Fl_sqrtn	233408
Fl_sqrtn_pre	233408
ZXX_nv_mod_tree	254544
_Fp_equal0	260724
Z_chinese_all	268092
Z_chinese_pre	271816
Fl_powers	296050
nxV_chinese_center_tree	303855
Z_factor_listP	350651
nmV_polint_center_tree	378520
nmV_chinese_center	378521
polint_chinese	378625
pgener_Fp_local	412315
nxV_chinese_center	429150
u_remove2	463953
u_odd_prime_divisors	463954
mpfact	498567
u_is_gener_expo	544998
Z_chinese_coprime	546199
Fl_order	546576
pgener_Fl	575170
_Fp_rmul	575346
istotient_i	621565
init_montdata	679074
_mul_remiibar	717266
nxV_polint_center_tree	875457
Fp_select_red	888055
_Fp_red	889913
ZV_allpnqn	894831
nmV_polint_center_tree_worker	974628
gc_chinese	980128
pgener_Fl_local	1081231
_Fp_neg	1086846
_Fp_add	1175565
ZV_nv_mod_tree	1236307
bestappr_real	1265889
Fp_pows	1346238
_mul_remii	1481354
ncV_polint_center_tree	1514982
u_chinese_coprime	1640155
u_chinese_post	1640159
is_gener_Fl	1662373
_mul2_remiibar	1797049
Fp_powu	1836970
to_ZX	1886038
chinese1_coprime_Z_aux	2253538
bestappr_Q	2283441
chinese1_coprime_Z	2460725
gen_chinese	2463140
ZV_invdivexact	2630184
ZV_chinesetree	2630192
ZV_sqr	2630195
ZV_producttree	2634051
checkp	2681692
Z_chinese_post	3071845
ZX_nv_mod_tree	3096241
icopy_lg	3137064
Qsfcont	3137414
gboundcf	3142391
_mul2_remii	3554541
Fp_log	4259595
Fp_sqrt	4844524
Fp_sqrt_i	4898190
Fl_2powu	4979583
Fp_log_use_index	5039810
gome	5921890
Fp_invgen	6098303
_mul_montred	6683471
_sqr_remiibar	7577707
_Fp_sqr	8134253
Fp_rem_mBarrett	8294973
Fp_easylog	8819490
_mul2_montred	9360490
kronecker	12777163
Fl_2powu_pre	12899964
Fl_powers_pre	13062643
nonsquare1_Fl	13094056
ZT_sqr	13609486
_Fp_mul	14228214
Fl_sqrt	14733606
Fl_sqrt_i	14855200
Fl_sqrt_pre	23356868
_sqr_remii	23510347
_Fp_pow	28603441
kroiu	37670492
Fp_pow	37753638
Fl_sqrt_pre_i	38288494
ZV_chinese_tree	40901666
lcmii	54525641
Z_ZV_mod_tree	58194004
_sqr_montred	63174840
kross	100423587
krouu	102612637
Fl_powu	144830526
Fl_powu_pre	166277228
krouu_s	245491462
ome	347320194

Generated by: LCOV version 1.16