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 30365-beea1ff998) Lines: 2597 2668 97.3 % Date: 2025-07-01 09:21:48 Functions: 157 157 100.0 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_addmul2	59630373
Fl_addmul3	10766796
Fl_addmul4	5175111
Fl_addmul5	25748734
Fl_mul4	1775614
Fl_mul5	96842
Fl_mul6	791057
Fl_mul7	96842
Fl_mul8	887860
Fle_quotient_from_kernel_generator	96846
Flm_Fl_phi2_evalx	28110701
Flm_Fl_phi3_evalx	3594109
Flm_Fl_phi5_evalx	5166231
Flm_Fl_polmodular_evalx	43984905
Flv_deriv_pre_inplace	2464
Flv_lastnonzero	337800
Flv_powu_inplace_pre	39658
Flx_double_eta_jpoly	32962
Flx_double_eta_xpoly	62274
FpV_deriv	56
Fp_modinv_to_j	1162
Fp_polmodular_evalx	126
_qsort_cmp	15231414
append_neighbours	615970
calc_primes_for_discriminants	3185
carray_reverse_inplace	19653
check_generators	823820
compute_L_isogenous_curve	87887
db_add_levels	45
disc_best_modinv	1907423
discriminant_with_classno_at_least	3183
double_eta_Fl	34575
double_eta_exponent	68853
double_eta_initial_js	6873
double_eta_power	32963
double_eta_raw	35303
double_eta_raw_to_Fl	40747
double_eta_raw_to_Fp	455
double_eta_root	35436
eighth_root	5414
enum_volcano_floor	40506
enum_volcano_surface	40510
eval_modpoly_modp	2673
find_L_tors_point	141416
find_noniso_L_isogenous_curve	87890
fourth_root	3926
get_Lsqr_cycle	40510
inflate_polys	10038
internal_db	24932
interpolate_coeffs	43186
make_pcp_floor	3062
make_pcp_surface	3062
mkqfis	142948
modfn_preimage	67272
modfn_root	201315
modfn_unambiguous_root	20905
modinv_degree	7250373
modinv_double_eta_from_2j	20829
modinv_double_eta_from_j	6873
modinv_double_eta_good_disc	5312844
modinv_f3_from_j	358
modinv_f_from_j	3196
modinv_good_atkin	707301
modinv_good_disc	15215973
modinv_good_prime	11309899
modinv_height_factor	22917567
modinv_is_Weber	1008
modinv_is_double_eta	254809
modinv_j_from_2double_eta	6172
modinv_j_from_f	1844
modinv_level	41233
modinv_max_internal_level	28101
modinv_odd_conductor	574606
modinv_parent	140
modinv_parent_power	140
modinv_pfilter	16506
modinv_ramified	798
modinv_sparse_factor	46721
modpoly_height_bound	3183
modpoly_pickD	3185
modpoly_pickD_primes	13321
normalise_coeffs	10038
oneroot_of_classpoly	40499
orientation_ambiguity	55089
phi2_ZV	20008
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	56
phi3_ZV	1903
phi3_f3_ZV	21
phi3_w2w13_ZV	42
phi3_w2w7_ZV	182
phi5_ZV	1873
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	2682
phi_atkin17_j	4110
phi_atkin19_j	1535
phi_atkin3_j	924
phi_atkin5_j	1190
phi_atkin7_j	301
phi_w2w13_j	2402
phi_w2w3_j	1060
phi_w2w5_j	2927
phi_w2w7_j	6635
phi_w3w13_j	210
phi_w3w3_j	3825
phi_w3w5_j	1147
phi_w3w7_j	2986
phi_w5w7_j	2899
polmodular	644
polmodular0_ZM	27982
polmodular0_powerup_ZM	140
polmodular_ZM	19259
polmodular_ZXX	19175
polmodular_db_add_level	26929
polmodular_db_add_levels	5263
polmodular_db_for_inv	387417
polmodular_db_getp	558805
polmodular_db_init	21485
polmodular_small_ZM	24932
polmodular_split_p_Flm	40488
polmodular_worker	40498
prime_to_conductor	3409462
primeform_discrete_log	214232
primeform_exp_order	1131074
qfb_distinct_prods	230294
qfb_is_two_torsion	1691074
qfb_nform	135919
qform_primeform2	82199
red_primeform	3409462
root_matrix	40510
roots_to_coeffs	42864
safe_abs_sqrt	10318
scanD0	3185
select_L0	3183
select_curve_with_L_tors_point	87886
sixth_root	5721
sympol_to_ZM	24792
twelth_root	888
update_Lsqr_cycle	575452
vecsmall_pick	615961
verify_L_sylow_is_cyclic	49465
weber_exponent	77

Generated by: LCOV version 1.16