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 30316-0578a48613) Lines: 2402 2473 97.1 % Date: 2025-06-02 09:19:41 Functions: 149 149 100.0 % Legend: Lines: hit not hit

Function Name	Hit count
phi2_atkin7_ZV	7
phi2_atkin5_ZV	14
phi2_w3w13_ZV	14
phi2_atkin3_ZV	21
phi2_w3w3e2_ZV	21
phi3_f3_ZV	21
phi2_w3w5_ZV	35
phi3_w2w13_ZV	42
phi5_w3w7_ZV	42
db_add_levels	45
FpV_deriv	56
phi2_w5w7_ZV	56
phi5_w2w3_ZV	56
phi5_w3w3_ZV	63
weber_exponent	84
phi7_w2w5_ZV	98
phi2_g2_ZV	119
Fp_polmodular_evalx	126
modinv_parent	140
modinv_parent_power	140
polmodular0_powerup_ZM	140
phi3_w2w7_ZV	182
phi5_f_ZV	182
phi_atkin7_j	203
phi_w3w13_j	210
double_eta_raw_to_Fp	238
modinv_f3_from_j	358
modinv_ramified	581
polmodular	630
phi_atkin5_j	841
twelth_root	899
Fp_modinv_to_j	1043
phi_w2w3_j	1060
modinv_is_Weber	1134
phi_w3w5_j	1149
modinv_j_from_f	1858
phi5_ZV	1859
phi3_ZV	1889
phi_w3w7_j	2412
Flv_deriv_pre_inplace	2464
eval_modpoly_modp	2674
phi_w2w13_j	2711
phi_atkin3_j	2779
phi_w2w5_j	2815
make_pcp_floor	2887
make_pcp_surface	2887
phi_w5w7_j	2896
discriminant_with_classno_at_least	3008
modpoly_height_bound	3008
select_L0	3008
calc_primes_for_discriminants	3010
modpoly_pickD	3010
scanD0	3010
modinv_f_from_j	3266
phi_w3w3_j	3686
fourth_root	3938
polmodular_db_add_levels	4934
eighth_root	5303
sixth_root	5498
double_eta_initial_js	5858
modinv_double_eta_from_j	5858
phi_w2w7_j	6172
modinv_j_from_2double_eta	6215
safe_abs_sqrt	10458
normalise_coeffs	10490
inflate_polys	10491
modpoly_pickD_primes	12096
modinv_double_eta_from_2j	14707
modfn_unambiguous_root	14785
modinv_pfilter	15106
carray_reverse_inplace	18717
polmodular_ZXX	19161
polmodular_ZM	19245
phi2_ZV	19994
polmodular_db_init	21471
sympol_to_ZM	24715
internal_db	24855
polmodular_small_ZM	24855
polmodular_db_add_level	25161
double_eta_Fl	26423
double_eta_raw	26934
double_eta_root	27341
polmodular0_ZM	27730
modinv_max_internal_level	27849
Flx_double_eta_jpoly	30004
double_eta_power	30004
double_eta_raw_to_Fl	32639
orientation_ambiguity	36429
polmodular_split_p_Flm	38833
oneroot_of_classpoly	38837
polmodular_worker	38840
get_Lsqr_cycle	38843
enum_volcano_floor	38844
enum_volcano_surface	38844
root_matrix	38844
modinv_level	40302
Flv_powu_inplace_pre	40876
roots_to_coeffs	41202
interpolate_coeffs	41531
modinv_sparse_factor	44713
Flx_double_eta_xpoly	46989
verify_L_sylow_is_cyclic	47399
double_eta_exponent	57582
modfn_preimage	65970
qform_primeform2	77503
compute_L_isogenous_curve	83543
find_noniso_L_isogenous_curve	83543
select_curve_with_L_tors_point	83544
Fl_mul5	92099
Fl_mul7	92099
Fle_quotient_from_kernel_generator	92101
find_L_tors_point	134835
mkqfis	135343
qfb_nform	135828
modfn_root	192381
primeform_discrete_log	201771
qfb_distinct_prods	229468
modinv_is_double_eta	237181
Flv_lastnonzero	343802
modinv_good_atkin	347228
polmodular_db_for_inv	356659
polmodular_db_getp	517997
modinv_odd_conductor	533138
update_Lsqr_cycle	537716
vecsmall_pick	576556
append_neighbours	576563
Fl_mul6	751353
check_generators	783190
Fl_mul8	843422
primeform_exp_order	1076948
qfb_is_two_torsion	1677753
Fl_mul4	1686765
disc_best_modinv	1907423
prime_to_conductor	3241532
red_primeform	3241532
Flm_Fl_phi3_evalx	3243204
Flm_Fl_phi5_evalx	5004064
Fl_addmul4	5012155
modinv_double_eta_good_disc	5296555
modinv_degree	7227243
Fl_addmul3	9724141
modinv_good_prime	10678551
_qsort_cmp	14437789
modinv_good_disc	15156970
modinv_height_factor	22223461
Fl_addmul5	24950624
Flm_Fl_phi2_evalx	26417042
Flm_Fl_polmodular_evalx	41794754
Fl_addmul2	55969046

Generated by: LCOV version 1.16