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

Generated by: LCOV version 1.16