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 30831-19b50a36d0) Lines: 2080 2301 90.4 % Date: 2026-04-20 09:27:00 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	7942
ncV_chinese_center	10333
is_gener_Fp	13965
Fp_invmBarrett	14032
Fp_sqrts	18948
_Fp_s	19075
Fp_2gener_i	19392
Fl_log_naive_pre	28969
Fl_log_pre	29367
Fp_log_sieve_worker	30252
_Fp_inv	34307
kroui	35692
krois	40089
Fp_pow_table	43694
pgener_Fp	44282
_Fp_one	47162
Fp_log_halfgcd	56551
factorial_Fl	57076
tr	59731
hilbert	62314
Fl_2gener_pre_i	65848
istotient	70000
Fp_sqrt_ii	75175
addifsmooth2	83825
mulu_interval_step	92823
bestappr	106340
nmV_chinese_center_tree_seq	120578
nmV_polint_center_tree_seq	120578
Fl_log	132362
Fl_log_naive	132362
Fp_order	136405
hilbertii	140826
ZV_chinese_center	144737
Fl_lgener_pre_all	147058
krosi	159682
rt	169813
pgener_Zp	171073
Fp_sqrtn	173541
mulu_interval	176991
Fl_2gener_pre	188800
krouodd	195374
pgener_Zl	205829
rootsof1_Fl	215523
ZM_nv_mod_tree	215651
ZM_nv_mod_tree_t	221108
Fl_sqrtl_pre	230031
Fl_sqrtl_raw	232992
Fl_sqrtn	233411
Fl_sqrtn_pre	233411
ZXX_nv_mod_tree	254522
_Fp_equal0	260724
Z_chinese_all	268075
Z_chinese_pre	271796
Fl_powers	296050
nxV_chinese_center_tree	303887
Z_factor_listP	350651
nmV_chinese_center	378504
nmV_polint_center_tree	378504
polint_chinese	378608
pgener_Fp_local	412288
nxV_chinese_center	429303
u_odd_prime_divisors	463941
u_remove2	463943
mpfact	500320
u_is_gener_expo	544986
Z_chinese_coprime	546169
Fl_order	546589
pgener_Fl	575202
_Fp_rmul	575346
istotient_i	621565
init_montdata	694476
_mul_remiibar	717266
nxV_polint_center_tree	875611
_Fp_red	889913
ZV_allpnqn	894831
Fp_select_red	903535
gc_chinese	968123
nmV_polint_center_tree_worker	974581
pgener_Fl_local	1081252
_Fp_neg	1086846
_Fp_add	1175565
ZV_nv_mod_tree	1236246
bestappr_real	1267690
Fp_pows	1346256
_mul_remii	1473181
ncV_polint_center_tree	1514923
u_chinese_coprime	1640284
u_chinese_post	1640285
is_gener_Fl	1662441
_mul2_remiibar	1797049
to_ZX	1883817
Fp_powu	1900586
chinese1_coprime_Z_aux	2253538
bestappr_Q	2289434
chinese1_coprime_Z	2460697
gen_chinese	2463112
ZV_invdivexact	2570474
ZV_chinesetree	2570475
ZV_sqr	2570488
ZV_producttree	2574350
checkp	2686140
ZX_nv_mod_tree	3046430
Z_chinese_post	3071801
icopy_lg	3137064
Qsfcont	3137414
gboundcf	3142391
_mul2_remii	3518470
Fp_log	4259584
Fp_sqrt	4844196
Fp_sqrt_i	4897871
Fl_2powu	4988577
Fp_log_use_index	5039808
gome	5921995
Fp_invgen	6097747
_mul_montred	6699966
_sqr_remiibar	7577707
_Fp_sqr	8134253
Fp_rem_mBarrett	8294973
Fp_easylog	8819401
_mul2_montred	9363290
kronecker	12777601
Fl_2powu_pre	12891377
Fl_powers_pre	13029217
nonsquare1_Fl	13097128
ZT_sqr	13363319
_Fp_mul	14228084
Fl_sqrt	14767846
Fl_sqrt_i	14889417
Fl_sqrt_pre	23321520
_sqr_remii	23413297
_Fp_pow	28603282
kroiu	37726181
Fp_pow	37752645
Fl_sqrt_pre_i	38278043
ZV_chinese_tree	40769973
lcmii	55106126
Z_ZV_mod_tree	57811469
_sqr_montred	63101232
kross	100423578
krouu	103352685
Fl_powu	144582694
Fl_powu_pre	165498323
krouu_s	246298198
ome	347873339

Generated by: LCOV version 1.16