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) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 94.1 % 2817 2651 Test Date: 2026-07-23 17:04:59 Functions: 96.3 % 163 157 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_atkin23_ZV	7
phi2_atkin3_ZV	7
phi2_atkin5_ZV	7
phi2_atkin29_ZV	14
phi2_atkin31_ZV	14
phi2_atkin7_ZV	14
phi2_w3w13_ZV	14
phi3_f3_ZV	14
phi2_w3w3e2_ZV	21
db_add_levels	24
phi2_w3w5_ZV	35
phi5_w3w7_ZV	42
phi3_w2w13_ZV	49
FpV_deriv	56
phi5_w2w3_ZV	56
phi5_w3w3_ZV	63
weber_exponent	63
phi2_w5w7_ZV	70
phi7_w2w5_ZV	91
phi2_g2_ZV	98
Fp_polmodular_evalx	126
modinv_parent	140
modinv_parent_power	140
polmodular0_powerup_ZM	140
modinv_f3_from_j	168
phi5_f_ZV	175
phi3_w2w7_ZV	182
phi_w3w13_j	210
phi_atkin13_j	224
phi_atkin7_j	273
phi_atkin5_j	287
double_eta_raw_to_Fp	357
phi_atkin23_j	504
polmodular	651
phi_atkin17_j	672
modinv_ramified	700
twelth_root	893
phi_atkin3_j	931
modinv_is_Weber	1029
Fp_modinv_to_j	1043
phi_w2w3_j	1060
phi_w3w5_j	1161
modinv_j_from_f	1830
phi5_ZV	1908
phi3_ZV	1931
phi_atkin29_j	2039
phi_atkin31_j	2222
phi_w3w7_j	2412
Flv_deriv_pre_inplace	2464
phi_w2w5_j	2500
eval_modpoly_modp	2674
phi_w2w13_j	2755
make_pcp_floor	3016
make_pcp_surface	3016
discriminant_with_classno_at_least	3136
modpoly_height_bound	3136
select_L0	3136
calc_primes_for_discriminants	3138
modpoly_pickD	3138
scanD0	3138
modinv_f_from_j	3147
phi_w5w7_j	3342
phi_w3w3_j	3883
fourth_root	3926
eighth_root	4720
polmodular_db_add_levels	5049
sixth_root	5340
double_eta_initial_js	6102
modinv_double_eta_from_j	6102
phi_w2w7_j	6166
modinv_j_from_2double_eta	6398
inflate_polys	9646
normalise_coeffs	9646
safe_abs_sqrt	9840
modpoly_pickD_primes	13416
modinv_pfilter	16554
modinv_double_eta_from_2j	17800
modfn_unambiguous_root	17878
polmodular_ZXX	19217
polmodular_ZM	19315
phi2_ZV	20064
carray_reverse_inplace	20791
polmodular_db_init	21548
sympol_to_ZM	24876
internal_db	25016
polmodular_small_ZM	25016
polmodular_db_add_level	26253
polmodular0_ZM	28019
modinv_max_internal_level	28138
double_eta_Fl	30004
double_eta_raw	30641
double_eta_root	30864
Flx_double_eta_jpoly	31102
double_eta_power	31102
double_eta_raw_to_Fl	36402
Flv_powu_inplace_pre	38570
modinv_level	40954
enum_volcano_floor	42964
enum_volcano_surface	42964
get_Lsqr_cycle	42964
oneroot_of_classpoly	42964
polmodular_split_p_Flm	42964
polmodular_worker	42964
root_matrix	42964
orientation_ambiguity	43897
roots_to_coeffs	45199
interpolate_coeffs	45528
modinv_sparse_factor	49098
verify_L_sylow_is_cyclic	51785
Flx_double_eta_xpoly	53906
double_eta_exponent	62323
modfn_preimage	73724
qform_primeform2	85554
compute_L_isogenous_curve	92030
find_noniso_L_isogenous_curve	92030
select_curve_with_L_tors_point	92030
Fl_mul5	100851
Fl_mul7	100851
Fle_quotient_from_kernel_generator	100851
qfb_nform	144557
find_L_tors_point	147554
mkqfis	150920
modfn_root	206597
primeform_discrete_log	217195
qfb_distinct_prods	231183
modinv_is_double_eta	256642
Flv_lastnonzero	330574
polmodular_db_for_inv	384772
polmodular_db_getp	557228
modinv_odd_conductor	567766
modinv_good_atkin	633269
update_Lsqr_cycle	684593
append_neighbours	727557
vecsmall_pick	727557
check_generators	829790
Fl_mul6	887327
Fl_mul8	988178
primeform_exp_order	1133652
qfb_is_two_torsion	1697990
disc_best_modinv	1907423
Fl_mul4	1976356
prime_to_conductor	3464791
red_primeform	3464791
modinv_double_eta_good_disc	5468111
Flm_Fl_phi3_evalx	5502153
Fl_addmul4	5575109
Flm_Fl_phi5_evalx	5575109
modinv_degree	7402275
modinv_good_prime	11332379
_qsort_cmp	15030118
modinv_good_disc	15123964
Fl_addmul3	16506459
modinv_height_factor	22899771
Fl_addmul5	27875545
Flm_Fl_phi2_evalx	34356762
Flm_Fl_polmodular_evalx	52494767
Fl_addmul2	74215677

Generated by: LCOV version 2.0-1