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 30582-6e9af8ee1d) Lines: 2626 2740 95.8 % Date: 2025-12-20 09:23:49 Functions: 157 161 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_addmul2	63715116
Fl_addmul3	12612029
Fl_addmul4	5317745
Fl_addmul5	26435367
Fl_mul4	1854428
Fl_mul5	98975
Fl_mul6	828385
Fl_mul7	98974
Fl_mul8	927289
Fle_quotient_from_kernel_generator	98989
Flm_Fl_phi2_evalx	29889809
Flm_Fl_phi3_evalx	4215793
Flm_Fl_phi5_evalx	5307958
Flm_Fl_polmodular_evalx	46443822
Flv_deriv_pre_inplace	2464
Flv_lastnonzero	336717
Flv_powu_inplace_pre	39845
Flx_double_eta_jpoly	32113
Flx_double_eta_xpoly	61086
FpV_deriv	56
Fp_modinv_to_j	1133
Fp_polmodular_evalx	126
_qsort_cmp	15420475
append_neighbours	660599
calc_primes_for_discriminants	3228
carray_reverse_inplace	20110
check_generators	813798
compute_L_isogenous_curve	90290
db_add_levels	24
disc_best_modinv	1907423
discriminant_with_classno_at_least	3226
double_eta_Fl	33889
double_eta_exponent	67341
double_eta_initial_js	6697
double_eta_power	32113
double_eta_raw	34609
double_eta_raw_to_Fl	39903
double_eta_raw_to_Fp	455
double_eta_root	34774
eighth_root	5021
enum_volcano_floor	41797
enum_volcano_surface	41792
eval_modpoly_modp	2674
find_L_tors_point	144772
find_noniso_L_isogenous_curve	90286
fourth_root	3926
get_Lsqr_cycle	41799
inflate_polys	9971
internal_db	24946
interpolate_coeffs	44453
make_pcp_floor	3104
make_pcp_surface	3104
mkqfis	152847
modfn_preimage	70203
modfn_root	205999
modfn_unambiguous_root	20577
modinv_degree	7437562
modinv_double_eta_from_2j	20496
modinv_double_eta_from_j	6697
modinv_double_eta_good_disc	5500283
modinv_f3_from_j	168
modinv_f_from_j	3259
modinv_good_atkin	665182
modinv_good_disc	15170644
modinv_good_prime	11453157
modinv_height_factor	22917001
modinv_is_Weber	1078
modinv_is_double_eta	259174
modinv_j_from_2double_eta	6011
modinv_j_from_f	1844
modinv_level	41368
modinv_max_internal_level	28158
modinv_odd_conductor	566569
modinv_parent	140
modinv_parent_power	140
modinv_pfilter	15877
modinv_ramified	798
modinv_sparse_factor	48096
modpoly_height_bound	3226
modpoly_pickD	3228
modpoly_pickD_primes	12649
normalise_coeffs	9971
oneroot_of_classpoly	41787
orientation_ambiguity	48746
phi2_ZV	20015
phi2_atkin11_ZV	0
phi2_atkin13_ZV	0
phi2_atkin17_ZV	0
phi2_atkin19_ZV	14
phi2_atkin23_ZV	21
phi2_atkin29_ZV	21
phi2_atkin3_ZV	7
phi2_atkin5_ZV	14
phi2_atkin7_ZV	7
phi2_g2_ZV	98
phi2_w3w13_ZV	14
phi2_w3w3e2_ZV	21
phi2_w3w5_ZV	35
phi2_w5w7_ZV	70
phi3_ZV	1910
phi3_f3_ZV	14
phi3_w2w13_ZV	35
phi3_w2w7_ZV	182
phi5_ZV	1880
phi5_f_ZV	189
phi5_w2w3_ZV	56
phi5_w3w3_ZV	63
phi5_w3w7_ZV	49
phi7_w2w5_ZV	91
phi_atkin11_j	0
phi_atkin13_j	1119
phi_atkin17_j	1119
phi_atkin19_j	1073
phi_atkin23_j	1883
phi_atkin29_j	3858
phi_atkin3_j	693
phi_atkin5_j	727
phi_atkin7_j	70
phi_w2w13_j	2157
phi_w2w3_j	1060
phi_w2w5_j	2927
phi_w2w7_j	6628
phi_w3w13_j	210
phi_w3w3_j	3608
phi_w3w5_j	1160
phi_w3w7_j	2986
phi_w5w7_j	3331
polmodular	651
polmodular0_ZM	28039
polmodular0_powerup_ZM	140
polmodular_ZM	19266
polmodular_ZXX	19182
polmodular_db_add_level	27200
polmodular_db_add_levels	5277
polmodular_db_for_inv	393209
polmodular_db_getp	569036
polmodular_db_init	21492
polmodular_small_ZM	24946
polmodular_split_p_Flm	41783
polmodular_worker	41791
prime_to_conductor	3502361
primeform_discrete_log	211978
primeform_exp_order	1116787
qfb_distinct_prods	235817
qfb_is_two_torsion	1717114
qfb_nform	144613
qform_primeform2	86991
red_primeform	3502361
root_matrix	41798
roots_to_coeffs	44126
safe_abs_sqrt	10064
scanD0	3228
select_L0	3226
select_curve_with_L_tors_point	90290
sixth_root	5537
sympol_to_ZM	24806
twelth_root	893
update_Lsqr_cycle	618778
vecsmall_pick	660594
verify_L_sylow_is_cyclic	50485
weber_exponent	77

Generated by: LCOV version 1.16