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) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 90.3 % 2352 2124 Test Date: 2026-07-23 17:04:59 Functions: 93.6 % 236 221 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
quadsfcontbound	7
quadsfcont	14
sfcont2	14
intmod2polmod	21
padic2mod	21
quad_isreduced	21
gc_empty	42
mod_to_frac	42
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
contfrac0	84
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	504
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	10357
is_gener_Fp	13712
Fp_invmBarrett	14033
Fp_sqrts	18957
_Fp_s	19075
Fp_2gener_i	19392
Fl_log_naive_pre	29661
Fl_log_pre	30073
Fp_log_sieve_worker	30261
_Fp_inv	34307
kroui	35429
krois	40089
Fp_pow_table	43694
pgener_Fp	44282
_Fp_one	47162
Fp_log_halfgcd	56566
factorial_Fl	57255
tr	59731
hilbert	62314
Fl_2gener_pre_i	65964
istotient	70000
Fp_sqrt_ii	75211
addifsmooth2	83825
mulu_interval_step	92879
nmV_chinese_center_tree_seq	120512
nmV_polint_center_tree_seq	120512
Fl_log	132376
Fl_log_naive	132376
Fp_order	136429
hilbertii	140826
Fl_lgener_pre_all	148070
ZV_chinese_center	150488
krosi	159773
mulu_interval	166976
rt	169813
pgener_Zp	171101
Fp_sqrtn	173539
Fl_2gener_pre	192246
krouodd	195202
pgener_Zl	205857
ZM_nv_mod_tree	215077
rootsof1_Fl	215577
ZM_nv_mod_tree_t	220534
Fl_sqrtl_pre	232010
Fl_sqrtn	233471
Fl_sqrtn_pre	233471
Fl_sqrtl_raw	234965
ZXX_nv_mod_tree	254703
_Fp_equal0	260724
bestappr	286870
Fl_powers	296057
nxV_chinese_center_tree	304105
Z_factor_listP	350651
nmV_chinese_center	377441
nmV_polint_center_tree	377441
polint_chinese	377545
pgener_Fp_local	412365
nxV_chinese_center	428623
Z_chinese_all	448279
Z_chinese_pre	451996
u_odd_prime_divisors	464062
u_remove2	464062
mpfact	501083
u_is_gener_expo	545055
Z_chinese_coprime	546014
Fl_order	546648
pgener_Fl	575299
_Fp_rmul	575346
istotient_i	621565
init_montdata	694611
_mul_remiibar	717266
nxV_polint_center_tree	875333
_Fp_red	889913
ZV_allpnqn	894831
Fp_select_red	903800
gc_chinese	972154
nmV_polint_center_tree_worker	987141
pgener_Fl_local	1081451
_Fp_neg	1086846
_Fp_add	1175565
ZV_nv_mod_tree	1246310
Fp_pows	1346239
bestappr_real	1426091
_mul_remii	1505175
ncV_polint_center_tree	1538431
u_chinese_coprime	1645000
u_chinese_post	1645000
is_gener_Fl	1662762
_mul2_remiibar	1797278
to_ZX	1890880
Fp_powu	1901394
chinese1_coprime_Z_aux	2253538
bestappr_Q	2443909
chinese1_coprime_Z	2460349
gen_chinese	2462764
ZV_chinesetree	2627290
ZV_invdivexact	2627290
ZV_sqr	2627290
ZV_producttree	2631145
ZX_nv_mod_tree	3078666
icopy_lg	3137064
Qsfcont	3137414
gboundcf	3142426
Z_chinese_post	3251814
checkp	3355369
_mul2_remii	3700801
Fp_log	4259498
Fp_log_use_index	5039619
Fl_2powu	5552334
gome	5975452
Fp_sqrt	6087200
Fp_invgen	6110397
Fp_sqrt_i	6140894
_mul_montred	6705660
_sqr_remiibar	7578139
_Fp_sqr	8134253
Fp_rem_mBarrett	8295405
Fp_easylog	8819103
_mul2_montred	9376494
kronecker	12966820
Fl_powers_pre	13223567
Fl_2powu_pre	13231965
ZT_sqr	13754836
_Fp_mul	14231484
nonsquare1_Fl	14510041
Fl_sqrt	16039063
Fl_sqrt_i	16076830
_sqr_remii	24540931
Fl_sqrt_pre	25318771
_Fp_pow	28601216
kroiu	37769593
Fp_pow	38935240
Fl_sqrt_pre_i	41545939
ZV_chinese_tree	42246768
lcmii	55319625
Z_ZV_mod_tree	58715462
_sqr_montred	63544565
kross	100889841
krouu	106999771
Fl_powu	151990533
Fl_powu_pre	169557291
krouu_s	250635026
ome	361519238

Generated by: LCOV version 2.0-1