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 30499-74bdd0ac5b) Lines: 2595 2666 97.3 % Date: 2025-09-17 09:23:49 Functions: 157 157 100.0 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_addmul2	60092017
Fl_addmul3	11156081
Fl_addmul4	5173634
Fl_addmul5	25736297
Fl_mul4	1769304
Fl_mul5	96353
Fl_mul6	788400
Fl_mul7	96354
Fl_mul8	884720
Fle_quotient_from_kernel_generator	96357
Flm_Fl_phi2_evalx	28272770
Flm_Fl_phi3_evalx	3725128
Flm_Fl_phi5_evalx	5165740
Flm_Fl_polmodular_evalx	44192001
Flv_deriv_pre_inplace	2464
Flv_lastnonzero	337763
Flv_powu_inplace_pre	39866
Flx_double_eta_jpoly	33128
Flx_double_eta_xpoly	62449
FpV_deriv	56
Fp_modinv_to_j	1162
Fp_polmodular_evalx	126
_qsort_cmp	15283378
append_neighbours	614150
calc_primes_for_discriminants	3201
carray_reverse_inplace	19475
check_generators	809918
compute_L_isogenous_curve	87727
db_add_levels	24
disc_best_modinv	1907423
discriminant_with_classno_at_least	3199
double_eta_Fl	34687
double_eta_exponent	69125
double_eta_initial_js	6928
double_eta_power	33128
double_eta_raw	35415
double_eta_raw_to_Fl	40861
double_eta_raw_to_Fp	455
double_eta_root	35542
eighth_root	5363
enum_volcano_floor	40400
enum_volcano_surface	40399
eval_modpoly_modp	2674
find_L_tors_point	140852
find_noniso_L_isogenous_curve	87723
fourth_root	3926
get_Lsqr_cycle	40400
inflate_polys	10049
internal_db	24960
interpolate_coeffs	43093
make_pcp_floor	3077
make_pcp_surface	3077
mkqfis	144717
modfn_preimage	66946
modfn_root	200973
modfn_unambiguous_root	20912
modinv_degree	7432404
modinv_double_eta_from_2j	20831
modinv_double_eta_from_j	6928
modinv_double_eta_good_disc	5494837
modinv_f3_from_j	358
modinv_f_from_j	3196
modinv_good_atkin	661521
modinv_good_disc	15152433
modinv_good_prime	11344184
modinv_height_factor	22916562
modinv_is_Weber	1008
modinv_is_double_eta	254579
modinv_j_from_2double_eta	6172
modinv_j_from_f	1844
modinv_level	41288
modinv_max_internal_level	28145
modinv_odd_conductor	565092
modinv_parent	140
modinv_parent_power	140
modinv_pfilter	16397
modinv_ramified	798
modinv_sparse_factor	46654
modpoly_height_bound	3199
modpoly_pickD	3201
modpoly_pickD_primes	13196
normalise_coeffs	10049
oneroot_of_classpoly	40391
orientation_ambiguity	54932
phi2_ZV	20015
phi2_atkin11_ZV	7
phi2_atkin13_ZV	14
phi2_atkin17_ZV	21
phi2_atkin19_ZV	14
phi2_atkin3_ZV	7
phi2_atkin5_ZV	14
phi2_atkin7_ZV	7
phi2_g2_ZV	105
phi2_w3w13_ZV	14
phi2_w3w3e2_ZV	21
phi2_w3w5_ZV	35
phi2_w5w7_ZV	63
phi3_ZV	1910
phi3_f3_ZV	21
phi3_w2w13_ZV	42
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	470
phi_atkin13_j	2681
phi_atkin17_j	4110
phi_atkin19_j	1534
phi_atkin3_j	924
phi_atkin5_j	1190
phi_atkin7_j	301
phi_w2w13_j	2401
phi_w2w3_j	1060
phi_w2w5_j	2927
phi_w2w7_j	6628
phi_w3w13_j	210
phi_w3w3_j	3825
phi_w3w5_j	1160
phi_w3w7_j	2986
phi_w5w7_j	3008
polmodular	651
polmodular0_ZM	28026
polmodular0_powerup_ZM	140
polmodular_ZM	19266
polmodular_ZXX	19182
polmodular_db_add_level	27080
polmodular_db_add_levels	5257
polmodular_db_for_inv	387304
polmodular_db_getp	560082
polmodular_db_init	21492
polmodular_small_ZM	24960
polmodular_split_p_Flm	40394
polmodular_worker	40386
prime_to_conductor	3493271
primeform_discrete_log	210552
primeform_exp_order	1114438
qfb_distinct_prods	234312
qfb_is_two_torsion	1716120
qfb_nform	144620
qform_primeform2	83180
red_primeform	3493271
root_matrix	40401
roots_to_coeffs	42766
safe_abs_sqrt	10318
scanD0	3201
select_L0	3199
select_curve_with_L_tors_point	87725
sixth_root	5721
sympol_to_ZM	24820
twelth_root	893
update_Lsqr_cycle	573729
vecsmall_pick	614135
verify_L_sylow_is_cyclic	49030
weber_exponent	77

Generated by: LCOV version 1.16