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 - polmodular.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30702-bddb8d6928) Lines: 2651 2817 94.1 % Date: 2026-02-23 02:23:56 Functions: 157 163 96.3 % Legend: Lines: hit not hit

Function Name	Hit count
phi2_atkin11_ZV	0
phi2_atkin13_ZV	0
phi2_atkin17_ZV	0
phi2_atkin19_ZV	0
phi_atkin11_j	0
phi_atkin19_j	0
phi2_atkin3_ZV	5
phi2_atkin5_ZV	5
phi2_atkin23_ZV	6
phi2_w3w13_ZV	10
phi3_f3_ZV	10
phi2_atkin7_ZV	11
phi2_atkin29_ZV	12
phi2_atkin31_ZV	12
phi2_w3w3e2_ZV	15
db_add_levels	20
phi2_w3w5_ZV	25
phi5_w3w7_ZV	30
phi3_w2w13_ZV	38
FpV_deriv	40
phi5_w2w3_ZV	40
phi5_w3w3_ZV	48
phi2_w5w7_ZV	52
weber_exponent	54
phi7_w2w5_ZV	66
phi2_g2_ZV	77
Fp_polmodular_evalx	90
modinv_parent	102
modinv_parent_power	102
polmodular0_powerup_ZM	102
modinv_f3_from_j	120
phi5_f_ZV	125
phi3_w2w7_ZV	134
phi_w3w13_j	150
phi_atkin13_j	192
phi_atkin7_j	224
phi_atkin5_j	238
double_eta_raw_to_Fp	306
phi_atkin23_j	432
polmodular	465
modinv_ramified	553
phi_atkin17_j	576
twelth_root	636
phi_w2w3_j	758
phi_atkin3_j	767
modinv_is_Weber	825
phi_w3w5_j	831
Fp_modinv_to_j	894
modinv_j_from_f	1310
phi5_ZV	1440
phi3_ZV	1456
phi_w3w7_j	1724
phi_atkin29_j	1748
Flv_deriv_pre_inplace	1760
phi_w2w5_j	1837
phi_atkin31_j	1905
eval_modpoly_modp	1910
phi_w2w13_j	2239
make_pcp_floor	2245
make_pcp_surface	2245
discriminant_with_classno_at_least	2329
modpoly_height_bound	2329
select_L0	2329
modinv_f_from_j	2330
calc_primes_for_discriminants	2331
modpoly_pickD	2331
scanD0	2331
phi_w5w7_j	2483
fourth_root	2860
phi_w3w3_j	3091
eighth_root	3457
polmodular_db_add_levels	3842
sixth_root	4171
double_eta_initial_js	4544
modinv_double_eta_from_j	4544
phi_w2w7_j	4548
modinv_j_from_2double_eta	4862
inflate_polys	7158
normalise_coeffs	7158
safe_abs_sqrt	7238
modpoly_pickD_primes	9431
modinv_pfilter	11762
modinv_double_eta_from_2j	14137
modfn_unambiguous_root	14189
carray_reverse_inplace	14858
polmodular_ZXX	16230
polmodular_ZM	16293
phi2_ZV	16829
polmodular_db_init	18068
polmodular_db_add_level	19752
sympol_to_ZM	20446
internal_db	20548
polmodular_small_ZM	20548
polmodular0_ZM	22780
modinv_max_internal_level	22865
double_eta_Fl	23225
Flx_double_eta_jpoly	23356
double_eta_power	23356
double_eta_raw	23743
double_eta_root	23881
double_eta_raw_to_Fl	28087
Flv_powu_inplace_pre	28299
enum_volcano_floor	31381
enum_volcano_surface	31381
get_Lsqr_cycle	31381
oneroot_of_classpoly	31381
polmodular_split_p_Flm	31381
polmodular_worker	31381
root_matrix	31381
modinv_level	32828
roots_to_coeffs	33023
interpolate_coeffs	33262
orientation_ambiguity	33746
modinv_sparse_factor	35939
verify_L_sylow_is_cyclic	37724
Flx_double_eta_xpoly	41906
double_eta_exponent	47543
modfn_preimage	53674
qform_primeform2	63673
compute_L_isogenous_curve	67306
find_noniso_L_isogenous_curve	67306
select_curve_with_L_tors_point	67306
Fl_mul5	73649
Fl_mul7	73649
Fle_quotient_from_kernel_generator	73649
find_L_tors_point	107991
mkqfis	112214
qfb_nform	123857
modfn_root	151764
primeform_discrete_log	156249
qfb_distinct_prods	185247
modinv_is_double_eta	190287
Flv_lastnonzero	242158
polmodular_db_for_inv	285462
modinv_odd_conductor	411365
polmodular_db_getp	412201
update_Lsqr_cycle	477048
append_neighbours	508429
vecsmall_pick	508429
modinv_good_atkin	541839
check_generators	600588
Fl_mul6	624622
Fl_mul8	698271
primeform_exp_order	824941
Fl_mul4	1396542
qfb_is_two_torsion	1420142
disc_best_modinv	1634934
prime_to_conductor	2895932
red_primeform	2895932
Flm_Fl_phi3_evalx	3383905
Fl_addmul4	3993890
Flm_Fl_phi5_evalx	3993890
modinv_double_eta_good_disc	4621426
modinv_degree	6277255
modinv_good_prime	8319550
Fl_addmul3	10151715
_qsort_cmp	11157195
modinv_good_disc	12742204
modinv_height_factor	19627531
Fl_addmul5	19969450
Flm_Fl_phi2_evalx	23180419
Flm_Fl_polmodular_evalx	35684346
Fl_addmul2	49744743

Generated by: LCOV version 1.16