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

Generated by: LCOV version 1.16